Unfriended

A group of online chat room friends find themselves haunted by a mysterious, supernatural force using the account of their dead friend.

Unfriended is a 2014 American found footage supernatural horror film directed by Levan Gabriadze, written by Nelson Greaves, executive produced by Jason Blum, co-produced by Adam Sidman, and produced by Greaves and Timur Bekmambetov. The film stars Shelley Hennig, Moses Jacob Storm, Renee Olstead, Will Peltz, Jacob Wysocki, and Courtney Halverson as high school students in a Skype conversation that is haunted by a student, played by Heather Sossaman, who was bullied and committed suicide.

The film premiered at the Fantasia Festival on July 20, 2014, and at SXSW on March 13, 2015. It received a theatrical release on April 17, 2015. The film, which is told almost entirely through a screencast of a high school student's MacBook screen, stars Shelley Hennig as one of several friends who find themselves terrorized online by an anonymous person. The film received mixed reviews from critics, and was a massive box office success, grossing $64 million against a $1 million budget.

A stand-alone sequel, Unfriended: Dark Web, had its premiere on March 9, 2018 at SXSW.

Source: Wikipedia, Imdb, Google.com