If you read newsletters to stay informed, here is an update worth paying attention to. Substack, a popular platform where writers, journalists and creators send email updates directly to subscribers, ...

Substack Breach May Have Leaked Nearly 700,000 User Details Online Your email has been sent A popular home for independent writers is dealing with a security scare. Substack has confirmed that hackers ...

The digital publishing platform Substack has told some of its users that their data was stolen in a security breach. The affected account holders had their email addresses and phone numbers scraped in ...

Newsletter platform Substack is notifying users of a data breach after attackers stole their email addresses and phone numbers in October 2025. Although the incident occurred four months ago, CEO ...

Newsletter platform Substack has confirmed a data breach in an email to users. The company said that in October, an “unauthorized third party” accessed user data, including email addresses, phone ...

Popular newsletter platform Substack is the latest company to confirm it experienced a security incident, in which users' email addresses and phone numbers were exposed. According to an email sent to ...