'Who Am I: No System Is Safe') is a 2014 German techno-thriller film co-written and directed by Baran bo Odar.

The officer in charge tells Hanne Lindberg, Head of the Cyber Division of Europol, that Benjamin asked to conduct the interrogation.

Benjamin says that he has information regarding FR13NDS (/frɛndz/), a notorious hacking group of four members connected to the Russian cyber mafia, and MRX, an infamous hacker known on Darknet; he tells her that he could give them both to Hanne if she listens to him.

He tells Hanne that, one night while he delivered pizzas to a group of students, he saw Marie, a girl with whom he was in love since his school days.

He tells Hanne that while working on cleaning the streets as punishment, he met Max, a fellow hacker, who Benjamin feels is the opposite of himself; a charismatic, cocky and confident individual.

After Benjamin proved himself as a hacker, Max explained to him that the concept of social engineering is the greatest form of hacking.

Infuriated, Benjamin refuses to let them into the house, also offending Marie when she visits him due to his anger.

After dissolving their hard drives in acid to erase data, they travel to Europol's headquarters in The Hague in order to try and break their way in—but it's impossible to find a way inside.

Using Max's advice about social engineering, Benjamin manages to gain access to the building by fooling a guard and plants a hacking device inside.

Having no other choice and knowing that FRI3NDS would kill him, he decided to turn himself in to Hanne, proving that he is serious after stating that he hacked her profile and learned personal information about her.

Distraught, she visits Benjamin's doctor, who states that his mother had multiple personality disorder and committed suicide because of it, learning that it can be genetically inherited.

Hanne connects various plot holes in Benjamin's story and realizes that "he" alone was CLAY; he committed all the atrocities, he hacked into the BND alone, and he planted the WWII bullets from his grandmother in the hotel to make it look like they were killed, imagining the trio due to his illness.

After Marie visits them and confirms that mentally ill subjects cannot be granted witness protection, they devise a plan for Benjamin to go to Hanne and dictate the story, deliberately giving plot holes which she will most likely decipher, and then using her grief for him to give him access to the witness protection program, and also spiking his hand with a nail to make the story seem truthful.

When he explains the trick to her in the car and puts down the sugar cubes, you see someone standing in the background wearing a CLAY mask, who really has no business being there.