The new partnership will allow Substack users to integrate Polymarket's prediction data directly into their content.

Substack is doubling down on Canada as part of its global push to strengthen subscription-led media. At the center of that ...

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.

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 ...

(Reuters) -Substack has raised $100 million in a funding round led by venture capital firms Bond and the Chernin Group at a valuation of $1.1 billion, the newsletter platform said on Thursday. The ...

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

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