Summarizing Zero Day's Posts for May

The following is a brief summary of all of my posts at ZDNet's Zero Day for May.

You can also go through previous summaries for April, March, February, January, December, November, October, September, August and July, as well as subscribe to my personal RSS feed or Zero Day's main feed.

Notable articles include: Inside the botnets that never make the news - a gallery; China's 'secure' OS Kylin - a threat to U.S offsensive cyber capabilities? and The Web's most dangerous keywords to search for.

01. Cybercriminals promoting malware-friendly search engines
02. New Mac OS X email worm discovered
03. China's 'secure' OS Kylin - a threat to U.S offsensive cyber capabilities?
04. Spammers harvesting emails from Twitter - in real time
05. 56th variant of the Koobface worm detected
06. Study: password resetting 'security questions' easily guessed
07. D-Link router's CAPTCHA flawed, WPA passphrase retrieved
08. Inside the botnets that never make the news - a gallery
09. The Web's most dangerous keywords to search for