There's some available security patches for the postGreSQL versions : 8.4.2, 8.3.9, 8.2.15, 8.1.19, 8.0.23 and 7.4.27 .These updates are available through this link, check and update .
Working on information security specially on Malware research and development .
I'm interested in Malware development, Vulnerability Research and Security Testing .