Twitter is launching a new extra layer of security, but will it stop hackers?

'Spear phishing', a form of targeted hacking, is drawing a lot of attention. How can you protect yourself?

More contractors getting into the cybersecurity business, creating more targets for Chinese hackers.

A fake tweet from the AP caused the Dow to fall almost about one percent on Tuesday.

Can a plane's cockpit be hacked? One researcher, who used a smartphone to hack the cockpit of a virtual airplane, says yes. The FAA says its unlikely, if not impossible.

Why a site that rents space to just about anyone is attacking vulnerabilities in the basic architecture of the Internet.

An anonymous researcher has found that all sorts of devices connected to the Internet are protected only by the easy-to-guess default passwords that the equipment came with when new.

South Korea is still recovering from an apparent cyberattack earlier this week. Government officials suspect North Korea of hacking, but is the country even capable?

U.S. Treasury Secretary Jack Lew is in Beijing this morning wrapping up his two-day visit to China. It's his first foreign trip in his new role and the first high-level talks between the U.S. and China in six months.

Tennessee-based retail chain Genesco is suing Visa, saying the penalty it paid for a data breach was wrong.