...it may have exposed your browsing history and other personal data to any would-be hacker who knew how to grab it.
http://www.cnet.com/news/flaw-found-in-avgs-web-safety-software-9-million-people-exposed/
Well I don't use that add-on, nor do I use Google Chrome, so I should be okay. Still, it's disturbing, yeah.
Flaws can and will be found in any software. What's key is the developer's attitude when a flaw is discovered. AVG seem to have responded well here, although the article is very light on detail.