Your Computer Is Infected with Malware!
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You may be familiar with this or similar messages urging you to take action purportedly designed to clean your allegedly infected computer. Unfortunately, these messages are often scams that attempt to install malicious software (malware) onto your computer. Such software is referred to as rogue (fake) anti-virus software. Last year, the FBI reported an estimated loss to victims in excess of $150 million from this type of scam¹.
How can my system get infected?
These types of scams can be perpetrated in a number of ways, including via website pop-up messages, web banner advertisements, spam and postings on social networking sites. Scams are also appearing via the use of "tweeting." The rogue anti-virus software scam generally uses social engineering to make the user believe his or her machine is infected and that by taking action (clicking on the link provided) the machine will be cleaned. If you click on the malicious link, you may be downloading malware onto your machine. The names of the fake programs sound legitimate, and often, in a further attempt to make the malware appear legitimate, the programs may prompt you to pay for an annual subscription for the fake software.
Some varieties of rogue anti-virus programs will also get installed on your machine without any interaction by you. Your machine could be compromised just by you visiting a website with a malicious ad or code.
What is the impact from rogue anti-virus software?
Rogue anti-virus software might perform many activities, including installing files to monitor your computer use, steal credentials, install backdoor programs, and add your computer to a botnet. The installation of malware could result in a high-jacked browser (i.e., the browser navigates to sites you did not intend), the appearance of new or unexpected toolbars or icons and sluggish system performance. Additionally, another concern related to rogue anti-virus software is the false sense of security you may have, erroneously believing your machine is protected by anti-virus software when in fact it is not.
What can I do to protect my computer?
Applying computer security best practices will help protect your machine and minimize any potential impacts.
NOTE: Regarding the above recommendations, many organizations have formal processes that automatically update and patch appropriate software, scan computers and perform file back-ups. In these cases, no end user action is necessary.
For more information, please visit:
Partial Listing of Rogue Security Software: http://en.wikipedia.org/wiki/Rogue_software
Free Security Checks: www.staysafeonline.info/content/free-security-check-ups