A bipartisan pair of senators is calling on the Department of Justice to investigate the alleged harassment of U.S. military families by Russian government hackers posing as Islamic State sympathizers.

Last week, the former commander of the anti-ISIS coalition discussed an operation in which U.S. forces and allies successfully used offensive cyber measures to hunt and defeat enemy forces. Despite the mission’s success, he said, the United States still faces a slew of challenges when confronting technologically adept nations in the cyber-dominated battlefield of the future.

GCHQ head Jeremy Fleming revealed that the U.K. has conducted a proactive cyber campaign against ISIS, touting the notion of using offensive cyberattacks to counter violent extremism.

CyberScoop has learned that Kaspersky research recently exposed an active, U.S.-led counterterrorism cyber-espionage operation used to target ISIS and Al-Qaeda members.

Defense Secretary Michael Fallon says his country has taken advantage of offensive cyberweapons against the Islamic State.

Several state government websites were defaced over the weekend in a rash of hacking activity claimed by Algeria-based pro-ISIS hacktivists.