Summary: Security news about Microsoft flaws and the botnets they make

● Microsoft Office Excel Malformed Records Stack Buffer Overflow

● McAfee downplays service pack fail

A recent McAfee service pack led to systems being rendered unbootable, according to posts on the security giant's support forums.

The mandatory service pack for McAfee's corporate Virus scanning product, VSE 8.7, was designed to address minor security bugs but instead tagged windows system files as malware. The software update was issued on 27 May and pulled on 2 June, after problems occurred. Users were advised to keep the patch if they'd already installed it in a low-key announcement on McAfee's knowledge base.

● DOS attacks threaten mobile network security

New types of denial of service attacks threatened the security of mobile data networks, a senior telecoms security researcher warned last week.

● Feds Need 10,000 Cyber Security Experts

The head of the DoD-sponsored Digital Forensics Challenge said that contests like this will help the U.S. government find the talent it needs.