There are Trojan behind Yahoo and Google Ads

Be careful when interested in online advertising. Because, now many malware (malicious software or malware) that hide behind a variety of online advertising.

Latest findings from researchers from Avast anti-virus companies are quoted from CNet site, uncovering malware-malware that exploit vulnerabilities in a variety of application platforms, Yahoo's ad, Fox, and Google.

Avast security experts say that the most widely ad platform malware is possessed by Yahoo Yield Manager and Fimserve owned Fox Audience Network, which is estimated to reach more than 50 percent of the infected online ads.

In smaller amounts, Google DoubleClick platform and MySpace are also carrying malware. "This is not a small player who has been infected with malware, but an ad server that is connected with Google and Yahoo," said Lyle Frink, Manager of Public Relations of Avast.

Malware found on ads that use Java scripts to by Avast named 'JS: Prontexi'. According to security experts Jiri Sejtko Avast, that script is a Trojan program, which targeted Windows systems.

Trojan was looking for security holes that have Adobe Reader, Adobe Acrobat, Java, QuickTime, and Flash. Although computer users do not click on any links, this trojan will directly infect a computer, immediately after the browser to load (loading) ads that have been possessed by malware.

The ads have been infected with a trojan that had been milling about in cyberspace since last December. According to data Avast, there are approximately 2.6 million customers who have penetrated computer this trojan. Nearly 530 thousand of them get it from the Yield Manager ad, and another 16 300 from Google's DoubleClick.



Yahoo representative said it was investigating the matter, but could not provide much information. "We have identified this problem and is trying to incapacitate in our system," said Yahoo to CNet.

Google spokesman also claimed to have found malware on their ads and middle fix this problem. "When our automated system managed to identify this problem, we immediately stop operating the ads that have been exposed to malware, and we will continue to improve our security system," said Google spokesman.

Practice of inserting malware via advertising is starting to bloom. This practice is also called malvertising (malicious advertising). Before this, few ads in the New York Times, TechCrunch, Drudge Report, and also briefly possessed WhitePages.com malware.