Mozilla Firefox was the loser in this year’s Pwn2Own hackfest. The number of holes found in Firefox prompted some in the media to declare it the least secure browser. Security experts say judging the security of Firefox, or any other browser, by the number of vulnerabilities found in a single contest is misleading. Mozilla is working on adding a sandbox to Firefox for Linux, Windows and Mac O X, experts say. Educating workers about phishing sites and malware are some of the best ways to avoid having a PC compromised.”]