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Movies like Ratter (2015)

Emma is a young and beautiful graduate student just starting a new life in New York City. Like most people her age, she is always connected - her phone and laptop are constant companions, documenting her most intimate moments. What she doesn't realize is that she's sharing her life with an uninvited and dangerous guest. A hacker is following Emma’s every move. When the voyeuristic thrill of watching her digitally isn't enough, the situation escalates to a dangerous and terrifying level.