Keith Alexander

NSA Chief Defends Surveillance Programs at Hacking Conference

Keith AlexanderNational Security Agency Director Keith Alexander jousted with a few hecklers as he defended the U.S. spy agency's surveillance programs at the Black Hat security conference on Wednesday, but largely kept the crowd of cybersecurity experts and hackers on his side.

Defending Surveillance

NSA officials say programs have stopped over 50 terror plots

The two National Security Agency surveillance programs recently leaked to the media have helped to stop over 50 terrorist plots, the director of the National Security Agency told the House Select Committee on Intelligence Tuesday morning.

The Cyber-Dam Breaks

Sensitive Army database of U.S. dams compromised; Chinese hackers suspected

U.S. intelligence agencies traced a recent cyber intrusion into a sensitive infrastructure database to the Chinese government or military cyber warriors, according to U.S. officials.

Securing Command

Strategic commander worried about cyber attacks on nuclear command and control

U.S. strategic nuclear weapons and the command systems that control them are vulnerable to cyber attacks although most are hardened against many types of electronic attacks, the commander of the U.S. Strategic Command said on Tuesday.

Cyber Threat Mounts

Cyber commander says weak U.S. infrastructure is vulnerable to major electronic attacks

The commander of the U.S. Cyber Command said on Wednesday that critical infrastructure like power grids and financial networks are weak and need to be strengthened against cyber attacks.

Cyber War

Cybercom chief: Destructive cyber attacks are coming

The commander of the military’s new U.S. Cyber Command said digital attacks are evolving from disrupting network functions to destructive strikes.