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

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.

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

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

Substack tested live video last year, allowing Substack Bestsellers (the company’s top users) to stream video and connect with a live audience and even collaborate with other Bestsellers. Now, the ...