Oracle has released a new version of Java (v7.55) which fixes a number of critical security vulnerabilities. So when your computer prompts that there is a new version of Java available (usually a small orange square icon near the clock in bottom right corner), click it and install the new version ASAP. My ITXpert clients should see this update pushed out in the next 24-48 hours (

Critical Java Update Plugs 37 Security Holes — Krebs on Security
Oracle has pushed a critical patch update for its Java SE platform that fixes at least 37 security vulnerabilities in the widely-installed program. Several of these flaws are so severe that they are likely to be exploited by malware or attackers in the days or weeks ahead.