Nicholas Moore hacked into three U.S. government networks using stolen credentials, and then bragged about it and posted victims' personal data on Instagram under the handle @ihackedthegovernment.

A security researcher published details of three security vulnerabilities in Windows Defender, and the code used to exploit them. Now, hackers are taking advantage of the vulnerabilities in real-life attacks, according to a cybersecurity firm.

Europol coordinated an operation against for-hire distributed denial-of-service (DDoS) services, including the arrest of four people and the takedown of 53 domains.

The U.S. Department of Justice announced that two Americans were sentenced to years in prison for helping the North Korean government place fake IT workers in U.S. companies.