Substack says hackers accessed user emails, phone numbers, and internal metadata in October 2025, with a database of 697,313 records later posted online.

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

Substack, the hugely popular online content platform with 50 million active subscribers, has confirmed it has been hacked. Here’s what you need to know.

According to The Guardian, several newsletters promoting Nazi ideology and antisemitic conspiracy theories were operating on ...

Michael Burry of "The Big Short" fame started a group chat for all of his paid subscribers on Substack, and the jokes and memes are rolling in.

Today, Substack officially rolled out Notes, the product that creates a feed that allows Substack creators and subscribers to interact. It functions so much like Twitter that it controversially caused ...

If you’re a subscriber to Patti Smith’s substack newsletter, then February just got a little brighter. And for those superfans who maybe haven’t signed up for the rock icon‘s newsletter yet, you just ...