Popular torrent aggregator Kickass Torrents appears to have fallen foul of Mozilla and Google, with the site now flagged as suspicious by both companies.
If you happen to frequent Kickass, you'll now find yourself confronted with something resembling the following:
Basically, the site has been temporarily marked as "not so good" by Firefox and Chrome and while you'll be stopped before reaching the site, you can push on if you want to.
According to TorrentFreak, which got in touch with the KAT administrators, the suspicious activity was caused by an errant advertisement, which has reportedly been dealt with.
The TorrentFreak story goes on to mention that the warning will go away once the site is re-evaluated by the browsers.