Security-conscious readers likely use the data breach alert site Have I Been Pwned, but Proton's new website aims to alert users in near real-time.
The company behind ProtonMail launched the Data Breach Observatory due to delays in discovering personal data breaches.
Despite the law, relying on large companies to reveal data breaches is unreliable, as many fail to disclose until weeks or months later.
Author's summary: Proton launches Data Breach Observatory for near real-time alerts.