If you are concerned that someone might use the same PDF exploit that comex used for his jailbreak for malicious purposes you can now use PDF Loading Warner
Winocm, a hacker who alongside iH8sn0w and SquiffyPwn brought us the p0sixspwn jailbreak of iOS 6.1.3-6.1.5, has announced he's going to work for Apple.
Apple today released iOS 4.3.5 which similar to iOS 4.3.4 will block the recent jailbreak released by comex. Do not update if you want to remain jailbroken.
Mac OS X Lion creates a new 650MB recovery partition on your drive that enables 'Lion Recovery' to repair or reinstall Lion without a physical install disc.
The Grugg, a Bangkok-based security researcher who brokers exploit sales to governments, reveals that iOS jailbreak exploits can sell for $250,000 or more.