Besides updates and patches, there are several tools to make your Firefox or Flock browser safer.
NoScript, MacAfeeSiteAdvisor, Netcraft Anti-phishing toolbar,
Clear Private Data (standard available Ctr-Shift-Del), Password Maker, DrWeb Anti-Virus link checker are the first to think about.
I would also think about adblock plus + filterset G-updater, and the update notifier.Safe search with:
www.scandoo.comWho knows of any more security add-ons or plug-ins?
polonus