Accused system administrator was claiming intellectual property rights over city's network configuration.

Twenty years of payment processing history as well as social security numbers are compromised.

UPDATED: Microsoft issues warning for attack vector that could paralyze database servers.

Making sure IT gets alerted only when there really is a problem is important.

New attack combines several attack techniques into a single, multi-stage attack that is still being examined for a line of defense.

Instead of waiting for a laptop to connect to the Internet, a kill message can be sent via SMS. Finally, texting has a practical use.

Fresh off its widest-ranging vulnerability fix in years, it's turning out that Microsoft may have missed one.

Bit9 ranks the most widely used applications with known security vulnerabilities.

The economic downturn, poor cooperation among law enforcement agencies and inadequate laws may see cybercriminals prosper – but not if the Obama administration takes warnings to heart.

National security think tank pushes for new U.S. oversight and regulations to combat Internet threats.