On Thursday, Facebook announced it acquired a security company that offers solutions for securing servers in untrusted environments as well as for protecting data in use.The technology under PrivateCores belt is designed to fight advanced persistent threats (APT), such as rootkits and bootkits that can evade classical antivirus detection.In the acquisition announcement, PrivateCore CEO Oded Horovitz said that their effort was poured into creating technology that can safeguard machines a…