Publishing platform Substack and prediction market Polymarket announced a new partnership on Wednesday. The new partnership ...

This week, Polymarket and Substack announced a partnership that will bring “native tools” “to share, discuss, and debate prediction market data directly on Substack.” In a statement from Polymarket ...

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

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

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

Forbes contributors publish independent expert analyses and insights. Karin Eldor covers entrepreneurs and leaders in fashion & lifestyle. The momentum hasn’t slowed. Every time I went to hit publish ...

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

Substack said that customer data was accessed in October 2025, but wasn't discovered until early February.

The Wall Street Journal. TechCrunch. Vice. These are just a handful of the media outlets who reached out to me earlier this year for comment in their stories. However, they weren't actually looking ...