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Windows 8 has its own built-in antivirus program called Windows Defender, which is designed to protect your computer from spyware and malware in, real-time. It scans your hard drive for viruses; however, by default it doesn’t scans removable and external drives.

The fake antivirus programs (also known as Rogue programs) are a kind of malware that often disguise as legitimate programs. Once installed it detect non-existent viruses on users PC and force them to pay money for removing the infections. Also, fake antivirus programs often installs sneakwares like browser add-ons and hijackers on users PC.

Microsoft has released a list of antivirus programs that supports Windows 8. These include popular brands such as Norton, Kaspersky, McAfee, etc. Windows 8 (Release Preview) has a built-in anti-malware scanner called Windows Defender. However, if you prefer to use any of the antimalware apps listed, Windows Defender will silently turn itself off.

Opswat Malware Scanner is a multi-engine malware scanner that scans your computer’s actively running processes and memory modules using five well-known malware scanning engine simultaneously. If your PC has infected with viruses, rootkits and other malware, 99.99% of its presence can be found in running processes and memory.

AVG has released 2012 line of products for Internet Security, Antivirus, and Antivirus Free with some important security improvements including better protection against fake antivirus and ransomware. On the first run, I noticed that, unlike the previous 2011 edition it is lightweight on system, especially when scanning the PC.

Some malware can turn your computer into a bot (also known as a zombie) and enables malware owners to access your computer’s resources and information without your knowledge. It is estimated that one quarter of all personal computers connected to the internet are part of a Botnet.

Online free anti virus scanners have been around for a while, and of course, they are no match for standalone antivirus apps, but can be useful in some tough situations. For example, if you find your computer acting a little strange, or if the existing software has been disabled by malware, you can utilize an online virus scanner to remove threat.

Ashampoo Virus Quickscan Free is a powerful, cloud based, and ultrafast malware scanner that can detect and remove virus infections on your PC instantly. It requires less than a minute for scanning and eliminates viruses, spyware, and active malware with two powerful scan engines.

RUBotted is a new security product from Trendmicro (currently beta) which is capable of detecting known and unknown variants of known botnet families including some of the most notorious botnets today such as ZBOT/Zeus (bank information stealer), KOOBFACE (Web 2 botnet) and WALEDAC (spamming bot). RUBotted monitors your computer for any suspicious activities associated with botnet malware and if detected it’ll clean them with HouseCall . RUBotted is a free product and this new release features improved detection of unknown versions of bot clients and better cleaning capabilities. Moreover, it is fully compatible with other antivirus products that may already be installed in your systems. Bots are malicious files that enable cybercriminals to secretly take control of your computer. RUBotted protects your system by continuously monitoring your computer for potential infection and suspicious activities. RUBotted can be downloaded free at this link .

AVG LinkScanner is a free early warning system that protects you from visiting malicious website. It offers real-time safety rating for all search results in Google, Yahoo and Bing. LinkScanner Online is for those who want to check a site for exploit manually before entering. LinkScanner Online visits websites before you do, inspecting them in real time for any kind of suspicious behavior and delivering safety ratings for all search results. Enter here and type the URL of the site you'd like to visit in the box to scan. It’ll scan the site instantly and give results. This type of service is certainly useful, because one false click and your PC can become infected with spyware, rootkits and other types of malware.

No Autorun is tiny tool that not only blocks autorun-related virus and other suspicious files entering into your computer, but it can also prevent viruses entering into your USB disk from your infected computer. After you run "No Autorun", the program waits for USB disk/flash insertion. Once you insert a USB disk, the program locks autorun.inf file and other related executable files. You can safely open or delete the files from the program. After you enabled write protect option, any newly connected USB disk will be read-only for your computer. It's useful when your PC is already infected but you don't want to spread the virus. No Autorun is compatible with Windows XP, Vista and 7 (32bit/64bit) and completely clean (according to Virus Total ), however check it with your antivirus program. Download No Autorun .

If you are a regular blog reader, probably you have heard about the recent Windows Shortcut Exploit . Also known as CPLINK , it is a zero-day vulnerability in all Windows versions that allows a Windows shortcut link to run a malicious DLL file. This vulnerability can be exploited via a malicious USB drive, or network shares and WebDAV. Even if you have AutoPlay and AutoRun disabled, it will affect the PC, if you insert a malicious USB drive. But unfortunately, at the moment, there is no patch from Microsoft to fix this exploit available. However there are certain solutions to block the exploit from running, such a Trend Micro’s Sysclean Tool , Sophos Windows Shortcut Exploit protection tool and Microsoft Fix it tool. Sophos Windows Shortcut Exploit protection tool is a free application that will detect Windows shortcut Exploit and blocks it from running. You can read more about Windows Shortcut Exploit from here. Download Sophos Windows Shortcut Exploit protection tool

Emsisoft just released an Emergency Kit, which is a collection of programs to scan and clean infected computers for Viruses, Trojans, Spyware, Adware, Worms, Dialers, Keyloggers and other malign programs. It can be run from a USB drive that means no installation is required, and is able to detect, quarantine and remove more than 4 million known dangers. Emsisoft Emergency kit has included their popular two applications HiJackFree and BlitzBlank and quite simple to use. Just unzip and double click on a2emergencykit.exe to run the tool. Emsisoft Emergency Kit (beta) is completely free and can be downloaded (100Mb)at source.

Modern browsers have the ability to block web forgeries (also known as phishing pages) and malware attacked web sites. Usually these two settings are enabled by default on your browser. However, if somebody has changed the settings or these two features are not working properly in your Firefox, here is how to test them. To test web forgery (phishing), just enter at http://www.mozilla.com/firefox/its-a-trap.html . You should get a warning message as shown below. And to test Malware attacked site, just enter at http://www.mozilla.com/firefox/its-an-attack.html . You should get a warning message as shown below. If your Firefox not detecting anything just check whether above two settings (Block Reported Attack site and Block Reported Web Forgeries) are enabled by going to Tools – Option – Security [see screenshot below]. OK, what are web forgeries or phishing? It is a process of attempting to acquire sensitive information such as usernames, passwords and credit card details by hiding as ...