Proton Uses Machine Learning to Detect Abuse of Its Services (infosecurity-magazine.com)

• Proton uses machine learning to detect abuse patterns in account creation.
• End-to-end encryption prevents access to message contents, even by Proton.
• Lawful requests must be validated via Interpol or Swiss federal police.

"Proton, the Swiss encrypted email provider, employs machine learning models to detect fraudulent account creation. COO Raphael Auphan stated at Infosecurity Europe 2026 that due to end-to-end encryption, Proton cannot access message contents. The company collaborates with law enforcement when requests are lawful, routed through Interpol or Swiss federal police. Proton emphasizes it acts only on legitimate suspicions, not political reasons."