Substack data breach exposed users’ emails and phone numbers
Published: (February 5, 2026 at 05:55 AM EST)
1 min read
Source: The Verge
Source: The Verge
Substack data breach details
Substack is notifying some users that the email addresses and phone numbers linked to their accounts were exposed in a “security incident” last year. In an email to account holders, Substack CEO Chris Best said that a hacker had accessed internal data without authorization in October 2025, but that …