Apologies for my early reply Actually the link mentioned in the post says this "An integer overflow in the libpng library can lead to a heap-buffer overflow w

Apologies for my early reply Actually the link mentioned in the post says this "An integer overflow in the libpng library can lead to a heap-buffer overflow when decompressing certain PNG images. This leads to a crash, which may be potentially exploitable." which may be potentially exploitable that's what is mentioned in the post. Also check this http://blog.mozilla.com/security/2012/02/17/mozilla-releases-to-address-cve-2011-3026/ http://blog.mozilla.com/security/2012/02/17/mozilla-releases... Regarding mouse over ads, apologies for not providing a good reading experience. Since the original link is in blue and the ad is in green, I thought it was easily distinguishable. I will look after it. Thanks for the comment :)