Reuters: Newsweek magazine’s Twitter account was the victim of hackers on Tuesday who posted a threat to U.S. President Barack Obama and his family and the words “CyberCaliphate” and “Je suis IS,” a reference to Islamic State and the French magazine Charlie Hebdo.

The group, which also took responsibility for hacking Pentagon social media accounts last month, tweeted “#CyberCaliphate Bloody Valentine’s Day #MichelleObama! We’re watching you, you girls and your husband!”

It also posted a message intended for the United States in retaliation for its actions in the Muslim world.