Substack data breach exposed user email addresses and phone numbers for months before CEO Chris Best confirmed the October ...

Publishing platform Substack has disclosed a data breach that leaked nearly 700,000 user records after an unauthorized third-party exploited a security flaw.

The company has emailed affected users after a dark web source claims the data of almost 700,000 users was compromised.

Substack has confirmed a major data breach that exposed emails and phone numbers for approximately 700,000 users, with the ...