Facebook has acquired PrivateCore, a security startup focused on encryption and malware prevention, according to a blogpost by PrivateCore chief Oded Horovitz. According to Horovitz, Facebook will “deploy” PrivateCore’s “technology into the Facebook stack to help protect the people who use Facebook.” PrivateCore was backed by Foundation Capital, a VC firm which also invested in Pocket, AdRoll, and SpoonRocket.