Cyber attacks disrupt Twitter, Spotify, other major sites across USThe FBI is also expected to participate in the investigation into the attack, two other US officials said.Cyber hackers [illustrative](photo credit: REUTERS)
![Cyber hackers [illustrative]](https://images.jpost.com/image/upload/f_auto,fl_lossy/q_auto/c_fill,g_faces:center,h_720,w_1280/253020 "Cyber hackers [illustrative]")