Problem with security alerts on site has been solved

Over the weekend, we’ve been getting reports of visitors to slideshare getting popups that say “your computer is unsecure”.  Naturally, we cancelled our weekend plans, rolled up our sleeves, and started looking for potential security issues with our servers, our javascript, our advertising .. everything.  At 5PM Sunday we figured out what the problem was (it was an advertisement, as we had suspected).

At this point we are 99.99% sure we have fixed the problem.  We apologize to anyone who was effected by this. We are rolling out processes to make sure that this never happens again.  If anyone sees anything suspicious please email me at jon AT slideshare DOT com.

Thanks to everyone who sent us feedback email! Realtime information from numerous SlideShare users was what helped us to identify the problem.