While Microsoft's Internet Explorer has become the bane of computer security, switching to Mozilla may not be the simple answer after all. Security firm Secunia has issued a 'highly critical' advisory that details 10 separate vulnerabilities found in Mozilla, Firefox and Thunderbird. The flaws can be exploited remotely, allowing an attacker to compromise a system and expose sensitive data. Mozilla users are urged to upgrade to the latest releases of each application, which contain the necessary fixes.

(ed. Nothing is totally secure. Hackers have nothing better to do than to crash whatever they can get they're hands on. Just keep everything up to date, no matter what browser you use.)