Oracle has once again released an updated version of Java SE 7 in order to combat serious vulnerabilities that have resulted in malware attacks on both Macs and Windows PCs. The new version, Update 15, comes less than three weeks after the previous patch, and follows an Apple-issued update to Java SE 6 in the wake of hacker attacks against Apple's own employees' work Macs. The new update is said by Oracle to "enhance security" as well as improve performance and stability.