In one noted case in 2011, actress Patricia Arquette quit Facebook after alleged cyberstalking.
In her last post, Arquette explained that her security warned her Facebook friends to never accept friend requests from people they do not actually know.
Cyberstalking is often accompanied by realtime or offline stalking.
A stalker may be an online stranger or a person whom the target knows.
A conviction can result in a restraining order, probation, or criminal penalties against the assailant, including jail.