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

Publishing platform Substack and prediction market Polymarket announced a new partnership on Wednesday. The new partnership will allow Substack users to integrate Polymarket’s prediction data directly ...

The 43rd president of the United States launched a Substack site Feb. 16 with a 1,500-word tribute to a predecessor.

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

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.

Substack has allowed for the inclusion of Polymarket embeds into blogs since 2024, and the new update mostly seems like it will streamline the process. Notably, the prediction charts can now be added ...

On Wednesday, Substack announced new features that allow writers to embed Polymarket data directly into their newsletters and in Notes. Substack had previously introduced Polymarket embeds in 2024, ...

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

Substack CEO Chris Best says AI could flood feeds with junk — or empower independent creators to spark a cultural renaissance.