PCWorld reports that Substack experienced a data breach in October 2025, exposing email addresses and phone numbers of approximately 697,000 users. The company discovered the security flaw on February ...
Exclusive: Site takes a cut of subscriptions to content that promotes far-right ideology, white supremacy and antisemitism The global publishing platform Substack is generating revenue from ...
Newsletter platform Substack has confirmed it suffered a security incident, leading to the compromise of users’ email addresses and phone numbers. Chris Best, the CEO of Substack, notified users of ...