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1.
Best Top 10 Free Antivirus software-2012
2.
Top 5 Free Antivirus for 2011
3.
Top Security softwares
4.
Best Free Antivirus Software
5.
Spyware Compatible with Windows 7
6.
List of 103 free security apps for Mac, Windows and Linux

 

:: Best Top 10 Free Antivirus software-2012 ::

 

#1-Microsoft Security Essentials 2012


top 10 free antivirus softwares 2011microsoft security
Microsoft Security Essentials is the best and No.1 free antivirus software program around the Internet world for 2012 (even for the year 2011) for PC and Windows operated computer systems. Microsoft Security Essentials is a top best anti virus program, in terms of security, ease of use, lightness, updates and support, and above all it’s exclusively made for Windows..Microsoft Security Essentials is an award winning best antivirus and its directly from Microsoft itself and probably the best antivirus for your PC,if you are using Windows.You can freely download it from Microsoft’s website and the best thing is that it automatically gets updated with the new advancements in the over all features of this antivirus software. You should keep your firewall security on to get the maximum security benefits from Microsoft Security Essentials antivirus software. And make sure that you are using Genuine Windows to get it free from Microsoft. Check here to test if your system has genuine windows copy.

Download Microsoft Security Essentials 2012 Free Version 2.0.657.0 

#2 Avast! Free antivirus 2012


top 10 free antivirus softwares 2011 avast

Avast free antivirus software is my #2 pick in this list of top 10 best free antivirus software, and  have got reasons to say this.Avast has very sound and strong security features and have gained a lot of faith and trust from a vast range of the internet connected computer system users. It offers many astounding security features, such as :- 
Antivirus and anti-spyware engine 
Real-time anti-rootkit protection 
Boot-time scanner 
Avast! SafeZone™ 
Auto Sandbox 
Avast! Real-time Shields like,Mail Shield,Web Shield Behaviour Shield (unique feature), Network Shield,etc. 

Download Avast Free antivirus Latest 2012 Version 6.0.1289


#3 Avira Free Antivirus



top 10 free antivirus softwares 2011 avira

Avira AntiVir Personal is very popular and one among the best rated and top 5 best antivirus software programs on the internet. Antivir Personal is available free for personal use and though, you can try even it’s paid/premium version for 30 days trial period.
Avira free antivirus software offers great security features, such as Anti Phishing, Anti Vir Pro Activ (detects unknown threats by their behaviour patterns), Web Guard protection (protection from malicious websites), Anti Drive(protection against downloading viruses when surfing online), Mail Guard (for email protection ) and many more security features. Avira is really a very strong anti-virus program for internet connected computer systems as well as for off-line systems.

Download Avira AntiVir Personal Free Antivirus 2012 Version: 10.2.0.703

#4 Panda Cloud Antivirus Free download


top 10 free antivirus softwares 2011 Panda Cloud

Panda Cloud Antivirus is, no doubt, one among the best top 5 free antivirus software programs available for personal use.Panda scan is light, soft and it gets updated automatically through its 'çloud technique', so you are least bothered about updating it and it keeps providing security to your system without you even noticing it. But it has this feature of the automatic quarantine which makes it a little troublesome. Over all, Panda Cloud antivirus is appreciated for its many security features, including lightness and 'Çloud scanning’ techniques. In fact, Panda Cloud is popular, widely used,very strong, and protectively very effective free anti-virus program. Panda Cloud Antivirus program is ranked 4th by PC World magazine.

Download Free Panda Cloud Antivirus 2012 version 1.5.1


#5 PC Tools iAntivirus

 

Top 10 best free antivirus 2011 PC Tools iAntivirus

PC tools iAntivirus is specifically built for Mac, though it can be used on PC as well. PC Tools iAntivirus is very popular, and strongly protective; and it is easy to use and simple to scan your computer system. It has very effective security features that make it desirable for your Mac/Pc system security. PC Tools iAntivirus is one among the top and best rated, ranked and reviewed antivirus software. It provides real-time system protection and comprehensive system scanning to ensure your Mac remains safe, secure, healthy and free of all online, offline malware threats. PC Tools iAntivirus is available in Free as well as in paid version.  

Download Free version of PC Tools iAntivirus 2012


#6 Comodo Free Antivirus Download 2012



top 10 free antivirus softwares 2011 Comodo

Comodo Antivirus software is a widely used popular antivirus software for PC; and this free antivirus software program is rated highly by most of the PC computer system users across the world for its free,paid ,and full version. Comodo has theaward winning Firewall application and it provides very strong and efficient protection to your PC against all types of online threats including spamming, phishing, viruses, malwares,Trojans and hacking attempts. Comodo provides defense for email, browsing & shopping, IM, external devices, downloads, gaming, etc and keeps your system free of all types infections. In brief, Comodo is one among top 10 best free antivirus and also popularly ranked 5th by PC World


Download Comodo Antivirus Internet Security 5.5. 195786 Free version 2012


#7 BitDefender Full Version Free Download 2012



top 10 free antivirus softwares 2011 Bit Defender

Bitdefender is a very capable and popular top best antivirus software when it comes to providing online/offline security to your PC, Mac against all types virus and malware threats.Bitdefender has been around for a long time now and has gained faith and trust of a large online user community. It provides Virus Scanning & Removal facility in gaming mode and provides schedule and quarantine facility.You can download Bitdefender’s full version freely.

Download Bitdefender 10 Free Edition 2012 15.0.31.1282


#8 AVG Free Antivirus Download 2012



top 10 free antivirus softwares 2011AVG

AVG antivirus 2011 is highly ranked, rewarded, and rated antivirus software for free download for your PC or Mac system. It has many security oriented features that make it one of the most desirable anti virus. PC world and Cnet provide excellent reviews for AVG antivirus. It has many features including,:Powerful protection behind the background, light for your system, Identity protection that protects and secures all your personal data. You can download the full version that comes for free.
Except the fact that it might show some false positives, it has very good overall rating. You can start using it without trouble and notice your own experience with this according to your system type.

Download Full and Free AVG anti-virus Version 2012 12.0.0.1809 


#9 Malwarebytes’ Anti-malware Full and free download 2012


top 10 free antivirus softwares 2011 malwarebytesAnti Malware



Its true that Malwarebytes’ anti-malware software program is improving in performance with each passing day and more users are appreciating its very simple yet strong protective features. Though, its mainly more popular for machine level system protection and anti virus features than an online/real time system protection against many types infections. You can keep it with other anti virus software,specially for system root level problems and threats. Because of it’s simple yet intense security services against malwares and its popularity for certain reasons, and for the much better reviews it received from advanced users,i have included Malwarebytes’ Anti-malware software among top 10 best and free anti virus software for 2012.

Download Malwarebytes’Anti-malware here for full and free version for 2012


#10  Spyware Doctor With Antivirus-Free and Full download 2012 


top 10 free antivirus softwares 2011 Spyware doctor.


Spyware Doctor with antivirus was awarded as ”” Product of the Year from PC Mag.com in the year 2009 for its excellent performance and features. Spyware Doctor is a composition of two well efficient engines, namely Antivirus (protects against malicious PC threats) and Antispyware Guards against information and identity theft.).
Spyware Doctor uses proactive,reactive and automatic anti spyware antivirus software to protect your system from various infections and threats.
Spyware Doctor Detects, removes and blocks all types of viruses, spyware, adware, Trojans, worms, key loggers and other online threats.

:: Best Free Antivirus Software ::

Avast! Free Antivirus

Avast! Free Antivirus: is my new top pick for the best free antivirus software in light of recent developments. Avast has steadily been improving its detection rates over the past few years and now ranks with the some of the best. Avast has the most features of all the free antivirus with full real-time capabilities including web, e-mail, IM, P2P and network shields, boot-time scanning, and a behavioural blocker. The new  version 6 brings even more features including an internet site ratings plugin, script malware protection and a limited (non-configurable) sandboxing feature. Although the sandbox is a very useful semi-automated security feature, the default settings involves a pop up to ask whether a software should be sandboxed for not - for the typical average user this can be slightly confusing though it can set to sandbox the software automatically. Lastly Avast is relatively light on resources.

 

Microsoft Security Essentials

Microsoft Security Essentials: is a favorite of mine with great detection rates, particularly for rootkits. Even more impressive is the fact that Microsoft Security Essentials has very few false positives, is light on resources and is good at removal of existing malware. MSE is a great choice for average users because of the minimal user interaction required. It automatically updates and removes threats. No registration is needed, apart from a quick validating of Windows, and there are no nag screens or advertisements.

The main downsides are the slow scan speeds and the lengthy amount of time it takes to quarantine malware, though in my opinion these are rather trivial concerns, as for example a scan just be run overnight. MSE also is not available in certain countries so users there will have to look elsewhere. Note that Microsoft Security Essentials requires a genuine copy of Windows to install.

 

Panda Cloud Antivirus

Panda Cloud Antivirus: is Panda's successful attempt to jump on the free antivirus bandwagon. Along with MSE, it is an excellent choice for average users with a simple interface and completely automated features with automatic updating and removal of malware. The detection level is generally very high, but according to the latest test data, detection of zero day threats is slightly lower. PCA uses 'cloud' technology to provide for a much quicker release of updates as all definitions are stored in the cloud and thus the moment Panda updates their blacklist all users of PCA with an internet connection are protected from it. 

Panda Cloud Antivirus has a behavioural blocker and web protection, which will certainly increase your security. However as you can simply use one of the other free AV's with a separate behavioural blocker (for further details see our Security Wizard) to achieve possibly even better protection, this is not necessarily an advantage.

One minor reservation I have is that PCA seems to erroneously detect certain browser/system-related applications, for example VideoCacheView, and because of the automatic quarantine this made it a fraction bothersome.

 

Avira AntiVir Personal Edition

Avira AntiVir Personal Edition: is another high quality free antivirus, and formerly the Top Pick. The primary reason I removed it from its status involved the recent controversy of AntiVir including a re-branded Ask toolbar in their installer, and a temporary spate of advertisements promoting a possible 'scareware' company. In spite of the negative press though AntiVir is still a top notch antivirus scanner with outstanding detection rates of malware, higher than almost every other antivirus according to tests. AntiVir is still a good choice for a free antivirus scanner, particularly for high risk users.

However, there are some minor reservations. First, AntiVir does not include web or e-mail scanning capabilities; this is only available in the paid version. The lack of an e-mail scanner is not a disadvantage, it just means that AntiVir won't warn you of infected emails before you open them. But should you open an infected email, AntiVir will still spring into action, so it doesn't mean that you're not protected from email-based infections. Also, AntiVir contains a rather intrusive advertisement every time it updates. Although AntiVir had signature updating problems in the past, this issue seems to be fixed now.

 

AVG Anti-Virus Free Edition

AVG Anti-Virus Free Edition is also a decent choice for a free antivirus. Although this venerable antivirus has had some shaky results in detection in the recent past, it now offers a high level of protection. This is probably due to the inclusion of a fully-fledged behavioural blocker that is the "Identity Protection" protection. This provides a very important additional layer of protection, on the other hand though a similar protection level can be achieved by using one of the free antivirus above alongside a separatebehavioural blocker. Unfortunately AVG free has grown considerably in size, has very slow scan speeds and also advertisements (but they can be disabled).

These free antivirus programs are excellent software that provide a real alternative to the major commercial antivirus products.

I'll just give a quick mention of several excellent on-demand antivirus scanners:

I'll also mention several popular free antivirus programs which I considered but did not include in the review because of low detection rates.

You can increase your protection if you run on-demand scans with another antivirus. On-demand scans can be run regularly to check for viruses, trojans, worms, spyware, adware, keyloggers, rootkits and other malware that may have been missed by your main antivirus scanner. If you have a good preventive security strategy in place, however the extra protection an on-demand antivirus scanner offers is minimal.

Ref: http://www.techsupportalert.com


 

:: Top 5 Free Antivirus for 2011 ::

 

Avast Free Antivirus tops our rankings due to its solid detection and friendly interface; Avira AntiVir Personal is a close second, however, on the strength of its malware detection and removal.

Edited by Nick Mediati   

Rating & Price
Products
PCWorld Rating

Avast Free Antivirus 5

Avast Free Antivirus is a well-rounded free antivirus package: It does a solid job at blocking malware, has a pleasant interface, and scans files quickly.

Full Review - Rated: November 29, 2010
PCWorld Rating

Avira AntiVir Personal Free AntiVirus 10

Avira AntiVir Personal does an great job at blocking and detecting malware, but its interface needs a makeover.

- Rated: November 29, 2010
PCWorld Rating

Microsoft Security Essentials 1.0

Microsoft Security Essentials is easy to use, but it lags behind newer products at detecting malware.

Full Review - Rated: November 29, 2010
PCWorld Rating

Panda Cloud Antivirus 1.0

Panda Cloud Antivirus is easy to use, but its scanning speeds are slower than average. Look for the Cloud Antivirus 1.3 update, which the company says should improve its attack-blocking capabilities.

Full Review - Rated: November 29, 2010
PCWorld Rating

Comodo Internet Security Premium 5.0

Comodo Internet Security Premium did a good job at blocking brand-new malware and has a firewall, but its inconsistent overall detection performance makes it tough to recommend.


 

:: List of Spyware Protection Software Compatible with Windows 7 ::

 

If you are one of the many people testing the beta release of Windows 7, you should still make sure to keep your computer safe and secure. The other day we created a list of Anti-Virus software compatible with Windows 7, and today we’ll be covering a list of compatible Spyware protection utilities.

Note: make sure to check out our screenshot walkthrough of the Windows 7 Beta if you haven’t already, as Microsoft is giving away beta keys that don’t expire until August 1st.

If you have a commercial security suite such as Norton or McAfee, then it probably includes anti-malware protection, and if you decide to run a separate anti-spyware package you should probably disable the other one. This is even mentioned in the Windows 7 Action Center screen if you install more than one:

image

Without further ado, on to the list…

Windows Defender   

By now I am sure you are familiar with Microsoft’s Windows Defender anti-malware utility which is included with Vista and Windows 7. It’s a fairly solid utility and obviously is going to work just fine in Windows 7.

   

You should disable Windows Defender if you decide to use any other antispyware package. This can also increase performance in some cases as The Geek pointed out in this Lifehacker article.

 

Spybot Search & Destroy

I figured we will kick this off with Spybot Search & Destroy, a personal favorite. I was able to install, update, immunize, and scan without any issues and the cool Easter Egg is still there!

 

 

Ad-Aware

Arguably the most popular anti-spyware application, previously mentioned Lavasoft Ad-Aware 2008 also worked flawlessly.

 

Malwarebytes’ Anti-Malware

Malwarebytes is another protection utility I get asked about quite often and this too works successfully in Windows 7. This is a great scanning program which is free unless you want real-time protection, that will set you back $24.95.

 

Spyware Blaster

Spyware Blaster is different to the other spyware detection utilities in the way it works.  Think of it as a shield against known spyware threats that you do not have to keep continuously running. Essentially you just need to run it when you want to update the database (which I would recommend doing fairly often). For automatic updates you will need to purchase a license for $9.99.

It disables a list of spyware related to Active X controls and flags them in the registry so an associated spy process will not be able to run, and hooks into your browser to check downloads.

Everything I tested seems to work without any problems. It is good to know we can rely on these trusted utilities for the 7 beta until Microsoft releases their free security solutionin the second half of this year.

Anti-Malware Suites

There are a number of “suites” that include protection for everything including spyware, and some of them we’ve previously tested in Windows 7 during our Windows 7 Compatible Anti-Virus Software list.

  • AVG Free
  • Avira AntiVir
  • Norton AntiVirus 2009
  • Avast! AntiVirus
  • Kapersky Anti-Virus 2009

What other anti-spyware software packages do you know about that also work? Let us know!

 

Ref:http://www.howtogeek.com/80080/list-of-spyware-protection-softw


are-compatible-with-windows-7-2/



:: List of 103 free security apps for Mac, Windows and Linux ::

 

Spyware

The biggest enemy of the internet user today is spyware. How many computers have you seen rendered useless because of 20 IE toolbars and 15 apps running in the background? To keep your computer running at full performance you need a spyware scanner.

  1. Ad-Aware SE Personal [Windows] – Popular, comprehensive spyware removal tool. Maintains a large blacklisted spyware database and identifies malicious program code for the best possible detection.

  2. Spyware Terminator [Windows] – Monitors all running processes in real time and determines their integrity. If spyware is found, moves the files to a quarantined section of the hard drive or deletes the files on system start-up.

  3. Spybot - Search & Destory [Windows] – Uses deep scanning techniques to cleanse your system of the most obscure forms of spyware. Allows you to blacklist certain types of spyware in order to prevent it from showing up on your system again.

  4. Winpooch [Windows] – Intercepts programs in real time via API hooking; determines the integrity of the program and shuts out spyware and Trojan horses from writing in a system directory, connecting to the internet, or doing anything harmful to the computer.

  5. SpywareBlaster [Windows] – Prevents the installation of ActiveX based spyware, blocks tracking cookies and restricts the actions of malicious websites.

  6. Bazooka Adware and Spyware Scanner [Windows] – Scans your computer for the more popular types of spyware usually found bundled with software packages and removes the malicious content.

  7. Windows Defender [Windows] – Microsoft's solution for protecting your computer from spyware and popups.

  8. MalWhere [Windows] – Displays detailed information about the processes running on your computer including those that run at start up. Investigates suspicious processes and let's you know when malicious code is being executed. Does not require a spyware definition updating.

  9. Trend Micro Anti-Spyware for the Web [Web: Windows] – Online based spyware detection and removal tookit. Perfect solution for non tech savvy users.

  10. Zebra scanner [Mac] – Scans files for hidden agendas (e.g. a trojan disguised as an MP3 or image.) Notifies the user of the scanned files integrity. Does not contain a method for disinfecting the computer.


Antivirus

Perhaps the ultimate definition of computer security is the effectiveness of your antivirus. Antivirus software keeps the most problematic forms of malware from corrupting your computer.

  1. McAfee AVERT Stinger [Windows] – Tool used to remove specific current popular viruses and worms. Make sure to download the version of Stinger pertaining to the virus found on your machine.

  2. PC Tools AntiVirus [Windows] – Comprehensive virus scanning suite offering protection from malicious internet software, email attachments and boot sector viruses. Includes real time virus scanning.

  3. Clam AntiVirus [Linux] – Extremely popular antivirus solution for UNIX based machines. Includes real time virus scanning and a virus definition database updated multiple times per day.

  4. AVScan [Linux] – A front-end for Clam AntiVirus.

  5. ClamXav [Mac] – Uses ClamAV engine to scan files for viruses.

  6. AVG Anti-Virus [Windows, Linux] – Effective virus scanning suite. Requires regular virus definition updates.

  7. Avast Home Edition [Windows, Linux] – Complete antivirus suite including real time scanning, email protection, internet traffic filtering, a firewall and more.

  8. Housecall [Web: Windows, Linux, Mac] – Web based scanner that detects and removes viruses, worms, trojans and spyware. Also points out system vulnerabilities and offers advice on obtaining security patches.

  9. Symantec Security Check [Web] – Simple antivirus solution that searches your computer for various forms of malware and deletes them. Offers a secondary scan to measure the vulnerability of your computer.


Rootkit

Rootkits are about the nastiest forms of malware around. To keep your computer (and your privacy) safe, you'll need an app to scan for rootkits.

  1. Sophos Anti-Rootkit [Windows] – Removes complex rootkits and various types of malware running in a hidden state from personal and network computers.

  2. Rootkit Hunter [Mac] – Searches for popular UNIX and Mac rootkits and removes them.

  3. chkrootkit [Linux] – The definitive solution for finding and removing rootkits from Linux machines.


Firewall

A well regarded firewall with a strict rule set is the first line of defense against intruders. Keep hackers from sneaking malware onto your system in the first place with these freebie firewall solutions.

  1. ZoneAlarm [Windows] – Popular, comprehensive firewall suite including a highly customizable rule set and a very effective warning system letting you know when your computer is at risk. Be sure to select "I only want basic ZoneAlarm protection" from the download screen (otherwise you'll end up with a trial version.)

  2. VisualZone [Windows] – Analyzes ZoneAlarm information including intrusion types and methods of entry. Allows you to gain a clear view of your system's vulnerabilities.

  3. PC Tools Firewall Plus [Windows] – User friendly firewall that monitors the applications connecting to the network. Uses a simple rule set to prevent malware from infecting your computer.

  4. Firestarter [Linux] – Real time firewall that monitors all of the open ports and active network connections on your computer. Allows you to specify a very strict rule set.

  5. Firewall Builder [Linux] – Useful tool for assembling a firewall rule set or policy for popular UNIX based firewalls including iptables, ipfilter, etc.

  6. TuxGuardian [Linux] – Verifies the integrity of applications trying to gain access to the network. Useful for preventing viruses, trojans, spyware, etc. from spreading throughout the network.

  7. HardWall Firewall [Linux] – Iptables based script that performs detailed packet inspection and filtering to keep your computer free from malicious traffic.

  8. BullDog [Linux] – Complex firewall for advanced users.

  9. PeerGuardian [Windows, Linux, Mac] – Blocks IPs from accessing your network. Especially useful for protecting your privacy when using peer to peer software.


Email

Despite being one of the most commonly used features on our computers, email ranks among the most insecure. Email attachments are the primary gateway for inviting viruses onto your computer. Here are a few apps to cleanup your inbox and keep your computer secure.

  1. Thunderbird [Windows, Linux, Mac] – Highly customizable secure email client. Comes equipped with spam email filters, phishing protection and encryption capabilities.

  2. Smart sendmail filters [Linux] – A collection of tools to block and filter sendmail spam as well as scan attachments for viruses.

  3. Sagator [Linux] – An interface for the postfix, sendmail and other smtpd gateways that run popular antivirus and antispam solutions.

  4. Tiger Envelopes [Windows, Linux, Mac] – Encrypts email messages. Integrates into Outlook, Thunderbird, Mac Mail and KMail.

  5. Simple ASCII Email Encoder [Mac] – Encodes your email address with ASCII values to prevent unsolicited spam mail from winding up in your inbox.


Web Utility

Malware infestation is probably the most annoying aspect of surfing the internet. It starts by accidentally downloading a toolbar here, failing to read a EULA there, and eventually your whole computer is one big slow piece of junk. To prevent this from happening (again) try using these apps when surfing.

  1. WinSCP [Windows] – SFTP and SCP client for transferring files to remote hosts. Includes text editor for editing remote documents.

  2. Privacy Mantra [Windows] – Erases data stored in your internet history, cookies, cache, index.dat, auto complete forms and more to protect your privacy.

  3. Tor [Windows, Linux, Mac] – Uses a network of virtual tunnels to provide anonymity for surfing the internet and transferring files over a network.

  4. BarracudaDrive [Windows, Linux, Mac] – Free secure web server implementation. Useful for managing files remotely.

  5. Firefox [Windows, Linux, Mac] – A fan favorite browser for it's secure architecture and available add-ons. Uses SSL browsing by default.

  6. McAfee Site Advisor [Windows, Linux, Mac] – Rates websites by their ability to infect your computer with malware. Advises you if a site is safe or not.

  7. Opera [Windows, Linux, Mac] – Secure multi-platform web browser.

  8. PuTTY [Windows, Linux] – Telent and SSH client for running remote sessions. Main features include command line based SCP and SFTP clients. Frequently used to communicate between a Windows machine and a Unix machine.

  9. WebCleaner [Linux] – Allows you to control the type of data your proxy parses. Useful for eliminating dangerous malware and removing annoying popup ads.

  10. Cyberduck [Mac] – Uses SSH to transfer files to remote computers and networks. Also integrates into OS X features including Bonjour, Keychain, iDisk and more.


Network

With an insecure network not only will you be vulnerable to the perils of the internet, everyone connected to your network will too. Meaning instead of having one computer down due to a nasty virus, you could have hundreds. These freebie apps will help you manage the challenge of keeping your network safe.

  1. SoftPerfect Network Scanner [Windows] – Displays information about the configuration of your network.

  2. SecureRDP [Windows] – Allows you to monitor and reject the incoming RDP connections to your server.

  3. Colasoft Packet Player [Windows] – Capture packets and trace their route through your network. Extremely useful for finding bottlenecks and vulnerable points.

  4. DomainScan Light [Windows] – Monitor open ports, connected devices, changes made to your network.

  5. SmoothWall [Linux] – Firewall, IDS and VPN system for home users and networks.

  6. Nagios [Linux] – Comprehensive web based tool equipped with virtually every imaginable feature for knowing exactly what's going on in your network.

  7. nLive Core [Linux] – Monitors the traffic that traverses your network via packet inspection and filtering.

  8. Network Mapper [Windows, Linux, Mac] – Uses packets passing through the network to find out what hosts are available, what services they're offering, what operating system they're running and what type of packet filtration/firewall they're using.

  9. Wireshark [Windows, Linux, Mac] – Powerful tool for capturing network protocol data for analysis. Contains more than 25 methods for reading packets making it useful for a wide array of networks.

  10. Nessus [Windows, Linux, Mac] – Industry leading open source network vulnerability scanner. Highly scalable and very thorough.

  11. dSniff Control [Mac] – Tool used to test the security of your network. Tries various sniffing and spoofing exploits to gain information about your network.

  12. Flame [Mac] – Simple tool used to breakdown the status and events taking place in your network.

  13. Server Admin Tools [Mac] – Apple's solution for securing and monitoring a network.


Intrusion Detection System

Implementing an effective intrusion detection system is a surefire step to improving the security of your network and personal computer. Here are several popular solutions.

  1. Snort [Windows, Linux, Mac] – The premier free IDS solution. Detects a wide variety of attacks including buffer overflows, OS fingerprinting, CGI scans and more. Uses real time traffic analysis and packet logging on IP networks.

  2. HenWen [Mac] – Effective implementation of Snort IDS for Mac users.

  3. Open Source Host-based Intrusion Detection System [Windows, Linux, Mac] – Personal IDS performing log analysis, registry monitoring, malware detection, time-based alerting and active response.

  4. Prelude [Linux] – Detects system anomalies and reports findings to the user. Also analyzes logs for anomalies.


Virtual Private Network

VPN usage has exploded the past few years due to its new found ease of use and high level of security.

  1. SSL-Explorer [Windows, Linux, Mac] – Highly scalable VPN that integrates directly into your browser. Requires only a single open port to work.

  2. OpenVPN [Windows, Linux, Mac] – Popular VPN solution specializing in remote access.

  3. IPSecuritas [Mac] – IPsec based VPN allowing you to transfer secure data remotely.

  4. strongSwan [Linux] – IPsec based VPN using multiple encryption methods.


Temporary Files

What websites have you been visiting? What's that, too embarrassed to say? Don't worry, we've got you covered. Simply use one of these apps to delete all of your temporary files and clean up the trail you left behind.

  1. HijackThis [Windows] – Scans your computers browser, registry and operating system settings to generate a report of the state of your computer. Allows you to select which software and settings to delete.

  2. Zappit System Cleaner [Windows] – Cleans up the footprints you leave when using the computer including: temporary files, recent documents, search and run commands, auto complete internet forms and history and more.

  3. CCleaner [Windows] – A system optimization and privacy tool that cleans up the registry, temporary files, cookies, web history and cache and more.

  4. WinXPatch [Windows] – A tool used to perform several security upgrades to the default installation and registry.

  5. Advanced WindowsCare v2 Personal [Windows] – Cleans up temporary files and the registry to maximize your privacy. Also doubles as a spyware remover.

  6. EasyCleaner [Windows] – A comprehensive tool for cleaning up the registry and deleting your footprints on the computer. Includes software to manage programs at start up and free up disk space.

  7. CleanCache [Windows] – Deletes the temporary files you leave behind when you surf the internet.

  8. xpy [Windows] – Improves the general security of your system by reconfiguring some of the default computer settings.

  9. Cookie Eraser [Windows] – A tool to help you identify and erase the unnecessary cookies on your computer.

  10. Yet Another System Utility [Mac] – Clears the cache, browser history and other areas where you might have left a footprint while using the computer.


Wireless

Securing your WiFi network is easier than it sounds. By taking a few extra minutes to install a few of the following apps, you'll have your WiFi network on lockdown in no time.

  1. Kismet [Linux, Mac] – Very popular wireless network detector, sniffer, and IDS.

  2. AirSnare [Windows] – Wireless IDS that alerts you when an unfriendly MAC address is trying to access your network.

  3. myWIFIzone [Windows] – Acts as a gateway to block people from accessing your WiFi connection without receiving permission from you first.

  4. iOpus Private Internet Gateway [Windows] – Creates a secure tunnel that encrypts your inbound and outbound WiFi communications. Protects your privacy on public networks.

  5. LucidLink WiFi Client [Windows] – Simplifies the process of securely connecting to a WiFi network, and warns you when you're connecting to an insecure network.

  6. AirTrafficControl [Mac] – Monitors your WiFi connection for quality and security.


Encryption

Encryption is a must for the most sensitive types of data. After all, we all know what happens when a password or credit card number winds up in the wrong persons hands. That's why we recommend you check out a few of the following encryption apps.

  1. Pastor [Mac] – Simple tool used to securely store all of your usernames and passwords.

  2. Access Manager [Windows] – Stores all of your sensitive passwords and personal information into one secure file.

  3. RememberMe [Windows] – Stores your usernames and passwords in an 128-bit AES encrypted file.

  4. Kruptos 2 [Windows] – Integrates into windows right click menus to encrypt and archives files easily.

  5. Crypt4Free [Windows] – Uses Blowfish and DESX encryption to protect your files and create encrypted messages for instant messaging and email clients.

  6. PicSecret [Web, Mac] – Neat feature that allows you to send encrypted messages disguised as ordinary pictures.

  7. GNU Privacy Guard [Windows, Linux, Mac] – A command line based encryption tool using multiple encryption algorithms including OpenPGP, AES, SHA-1, and more.

  8. TrueCrypt [Windows, Linux] – Creates virtual encrypted drives.


Miscellaneous

Here are few apps that simply didn't fit into the categories above. Although they might be unclassified, they all offer a great deal of functionality when it comes to overall system security.

  1. Active Security Monitor [Windows] – Uses a proven system to determine if a user's system is secure or not.

  2. PreView 1.0 [Windows] – Rates your computer on how vulnerable it is.

  3. PC Security Test [Windows] – Determines the vulnerability of your computer by subjecting it to simulated attacks and malware.

  4. PCPal [Windows] – Detects security vulnerabilities in your system and advises you on how to reduce their risks.

  5. Simple File Shredder [Windows] – Securely and permanently delete files on your computer.

  6. BCWipe [Windows] – Permanently deletes files off of your computer.

  7. Permanent Eraser [Mac] – Permanently delete files from your hard drive.

  8. S3 Change Explorer [Windows] – Graphically keeps track of the changes made on your system. Useful for determining if a user or file is making unwanted changes to sensitive files.

  9. Process Monitor [Windows] – Microsoft's solution for monitoring all of the processes running on your computer. Useful for identifying malware instances.

  10. Check Failed Password Attempts [Mac] – Tool used to scan for failed attempts logging into the administrator account.

  11. CheckMate [Mac] – Compares checksums of critical files to determine their integrity before you download them. By comparing checksums you'll know if you're getting the right files, or something infected with malware.

  12. Checksum Validator [Mac] – A very simple checksums comparison tool.


Ref: http://www.itsecurity.com/features/103-free-security-apps-041607/

 

 


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