Substack, the hugely popular online content platform with 50 million active subscribers, has confirmed it has been hacked.

Substack, a platform known primarily for newsletters, is launching a TV app for Apple TV and Google TV. The company announced on Thursday that the beta app will allow subscribers to watch video posts ...

"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.

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

Beehiiv's flat-fee model attracts creators and journalists The platform has over 40,000 monthly active users and nearly 15,000 paid subscribers The startup has raised about $49.7 million in total ...

The company that started as a newsletter platform has rapidly expanded to different content formats. The company that started as a newsletter platform has rapidly expanded to different content ...

On the heels of Instagram rolling out a Reels app for connected TV, newsletter creators can now offer videos and livestreams to subscribers via Apple TV and Google TV. By Etan Vlessing Canada Bureau ...

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

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

Substack has launched a beta version of its Substack TV app for Apple TV and Google TV, extending its video posts and livestreams onto connected TV screens. The company says creators who already ...