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

The Republican former president's essay centered on first leader George Washington, from his "humility" to slavery links.

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

George W. Bush became the latest writer to join Substack on Monday, with the 43rd POTUS launching his blog with a lengthy ...

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 ...

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

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

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.

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

"We're moving quickly," Farrah Storr, head of international at Substack, tells THR after hiring Mark Swierszcz as its new Canadian head of partnerships, with more country hires in the works worldwide.