If you don't fall for these extortionists' calls, they'll show up with USB sticks

A data-theft and extortion group called UNC3753 (also known as Silent Ransom Group) has targeted US banks and law firms using fake help desk calls and in-person USB stick attacks. The group shifts tactics from remote social engineering to physical intrusions when initial methods fail, as confirmed by Google’s Mandiant and corroborated by an FBI alert.