Substack confirmed a data breach after a hacker leaked data from nearly 700,000 users, including email addresses and phone numbers. Substack is an...

Substack confirmed a data breach after a hacker leaked data from nearly 700,000 users, including email addresses and phone numbers. Substack is an...

Newsletter platform Substack is notifying users of a data breach after attackers stole their email addresses and phone numbers in October 2025. [...]

Newsletter platform Substack is notifying users of a data breach after attackers stole their email addresses and phone numbers in October 2025. [...]

Substack confirms a breach after hacker accessed internal user records now circulating on crime forums, exposing emails, phone numbers, and account...

Media platform Substack has disclosed a data breach that exposed email addresses, phone numbers, and internal metadata of an unknown number of...

Substack, one of the services focused on email newsletters, has now confirmed that their service experienced an incident of user data leakage to third...

In October 2025, the publishing platform Substack suffered a data breach that was subsequently circulated more widely in February 2026. The breach...

Hackers accessed data from 6.2 million Odido accounts, exposing names, contacts, bank details, and ID numbers. Subsidiary Ben also warned customers....

A government-private investigation team confirmed Tuesday that more than 33 million user records of customers in Korea, including names and email...