Substack Breach May Have Leaked Nearly 700,000 User Details Online

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

Substack data breach exposes emails and phone numbers

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

Substack Surges Past 5M Paid Subscriptions, Thanks to Video and Trump (Exclusive)

Substack co-founder Hamish McKenzie says that creators jumping ship from 'mainstream media' like Jim Acosta, Joy Reid and Mehdi Hasan are a big driver of the growth. By Alex Weprin Senior Editor ...
The New York Times

Substack Raises $100 Million, Betting on Subscriptions but Coming Around to Ads

Substack, originally a newsletter service, says its app now has millions of users interacting with its creators. By Benjamin Mullin and Jessica Testa Substack began its life as a buzzy newsletter ...