That's not how it works - if there is a problem, its at your end, not here on A2K. See
THIS,
THIS, and
THIS.
It is possible some other site you've visited, some link or popup you've clicked, whether during the session in question or not, is responsible for the symptoms you describe, and something which occurred while you were browsing A2K triggered the event you report, but other than perhaps clicking a link in a post here which redirects to a malicious site, there's no way you're going to be "infected" by anything on A2K.