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.

Fancy Bear, also known as APT28, has taken over thousands of residential home routers to steal passwords and authentication tokens in a wide-ranging espionage operation.

CERT-EU blamed the cybercrime group TeamPCP for the recent hack on the European Commission, and said the notorious ShinyHunters gang was responsible for leaking the stolen data online.

Russian state-owned media reported that police in Russia arrested the administrator of LeakBase, a large hacking forum.