©Courtesy of HBO Documentary

The new trailer for HBO’s Serveilled shows a disturbing aspect: your cell phone is being used to spy on you without your knowledge.

An Israeli cyber-intelligence firm’s software, which created a disturbing scenario, is being investigated by Pulitzer Prize-winning journalist Ronan Farrow in the new HBO documentary Surveilled.

Here’s the synopsis describes : It’s a quiet transformation: every phone, in every pocket, is now a surveillance device, capable of secretly recording you, or piping your private information to unseen intruders. Commercial spyware, long billed as a tool purchased by governments fighting terrorism, has now appeared on the phones of activists, journalists and, increasingly, ordinary people.

In Surveilled, Pulitzer-Prize-winning investigative reporter Ronan Farrow pulls back the curtain on this secretive industry, bringing cameras inside the powerful spyware company NSO Group and gaining rare access to the engineers and executives behind its infamous spyware, Pegasus.

Farrow brings viewers inside a cat-and-mouse game between those spyware-makers and the teams inside big tech companies dedicated to fighting them. Surveilled illuminates a clandestine business reshaping concepts of privacy and power—and, as Farrow follows a trail of clues to the largest documented mass-hack using commercial spyware, in Barcelona—shows the human consequences for communities caught in the crossfire.

The documentary directed and produced by Emmy winners Matthew O’Neill and Perri Peltz will debut on HBO on Monday, Nov. 20 and be streamed on Max. Get your first glimpse of the film in the trailer above, before it debuts in New York City at DOC NYC this Friday.