LinuxSecurity.com: Thank you for reading the LinuxSecurity.com weekly security newsletter. The purpose of this document is to provide our readers with a quick summary of each week's most relevant Linux security headlines. Vulnerabilities exist for virtually every vendor, every week.

LinuxSecurity.com: Which vulnerabilities are the hardest for an enterprise to manage? None of them are easy, but the ones that are most lethal are the vulnerabilities you don't know about until an exploit hits. These flaws, known collectively as "zero-day"

Distributed IP Video systems are becoming very popular with new build projects due to their minimal cabling costs compared to traditional analogue CCTV equipment. Instead of analogue cameras connected to transmitter modules, as used in the arc Centre, IP cameras

Twitter attacker had proper credentials

PhotoDNA scans images for child abuse

Twitter investigates DNS hijack

A new report by security researchers claims that Google's reCAPTCHA system is flawed - so flawed that it would allow a botnet with just 10,000 zombies to manage 10 recognition successes an hour resulting in over 850,000 fake accounts being