Cybersecurity lapses have left critical Ukrainian infrastructure like a "powder keg", security researchers have said.
Hackers defaced Tsinghua University's website with an image of masked horsemen carrying an ISIS flag.
The anti-ISIS New World Hackers group performed a cyber attack live on-air.
Alonzo Knowles, 23, allegedly offered to sell the stolen content to an undercover federal agent.
Infiltration raised concerns about security of U.S. infrastructure, Wall Street Journal says.
The social media company issues first-ever warning of hacking by "state-sponsored actors."
Keyboard warriors—official and otherwise—are trying to degrade and destroy ISIS's online propaganda efforts and expose its schemes.
The extremist group offer instructions to its members on how to avoid cyber attacks.
The hacking compromised information in 83 million household and small business accounts.
The online hackers said they will publish their list on Thursday.
The Associated Press said the attempted hacks appeared to have been thwarted by threat-monitoring product.
The concern is revealed in the latest batch of Clinton's emails released by the State Department.
Director of National Intelligence James Clapper said his approach will be to "trust but verify."
Malicious iPhone and iPad programs identified.
The Department of Homeland Security needs to secure its own information systems better, according to an audit released on Tuesday.
The company also struck back at reports that the site had few female users.
Noel Biderman reaches a mutual agreement with Avid Life Media to step down.