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

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

Journalism is better when it’s backed by live markets,” Polymarket’s X account said in a post announcing the deal.

Substack won't share official numbers, but it seems like a pretty significant data breach.

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

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.

Exclusive: Site takes a cut of subscriptions to content that promotes far-right ideology, white supremacy and antisemitism ...

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

The hacker claims to have stolen nearly 700,000 Substack user records, including email addresses and phone numbers.

We saw in the movies of 2025 that Rakim Mayers, a.k.a. A$AP Rocky, could be as successful as an actor as he is a music artist ...

The close friends of Meghan Markle and Prince Harry have shared the true feelings of the California-based royal couple ...

Your newsletter could be your single biggest growth channel. These 5 steps from a founder who's built 10 million subscribers ...