We all have come to love and hate those Google ads that suddenly pop up over, under on the side or wherever with a text on a website, interrupting our reading with advertisement. Now this type of advertisement might not only have interrupted our reading but also the security of the PCs we are using. According to a news article published in CT, a German IT magazine, Google advertisement (also known as Adwords) has been used to distribute malicious code to exploit vulnerabilities in Adobe's Flash player.
If you are fluent in German, here is the article: http://www.heise.de/security/Google-Werbung-wird-als-Malware-Schleuder-missbraucht-Update--/news/meldung/117564
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