The Devil's Messaging, a French documentary series exploring the Sky ECC infiltration, will premiere on HBO Max on October 23, 2026. Directed by Ksenia Bolchakova and Simon Bouisson, this original production revisits an operation that granted investigators access to the communications of numerous criminal networks.
Posed as a highly secure messaging service, Sky ECC ran on specially modified phones. Its encryption had made it a favored tool for various groups involved in international drug trafficking, money laundering, and plotting assassinations.
When investigators finally breached the system, they intercepted and analyzed more than a billion messages. The series chronicles this infiltration—from the earliest decrypted transmissions to the uncovering of the networks, the police operations, and the arrests that followed.
Rather than limiting itself to the technical side of hacking, La Messagerie du Diable aims to show how these exchanges helped reconstruct the daily workings of organized crime. The intercepted conversations provide insight into power dynamics, the transactions, and the violent schemes that lay behind the app.
Ksenia Bolchakova and Simon Bouisson are directing the series and co-writing it with Emmanuel Fansten and Guillaume Gendron. The project is produced by Alexandra Jousset and Dominique Tibi for Capa Presse and Roche Productions.
This new French production sits at the crossroads of true-crime documentary, investigative storytelling, and technological sleuthing. It also asks how a tool marketed for privacy ends up doubling as a criminal infrastructure and a remarkable source of judicial intelligence.
The Devil's Mailbox will be available on HBO Max starting October 23, 2026.
To go further, also explore our picks for the HBO Max new releases for October, our guide to the latest streaming drops across all platforms, and today’s feature What to watch today on streaming.
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