If you’re impacted by the security incident, you’ll hear directly from the brand with an email from Substack's CEO.

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

Exclusive: Site takes a cut of subscriptions to content that promotes far-right ideology, white supremacy and antisemitism ...

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

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

"We're moving quickly," Farrah Storr, head of international at Substack, tells THR after hiring Mark Swierszcz as its new ...

Substack confirms a major data breach exposing user emails and phone numbers. What’s behind the breach, and what’s next?

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

The move comes as Substack has been investing more heavily in video and livestreaming, as it looks to compete with platforms like YouTube and Patreon for both creators and viewers.

Substack on Thursday announced the launch of its Creator Accelerator Fund, which provides a $20 million funding guarantee aimed at helping creators grow their audience and move their paid subscribers ...

As TikTok’s future hangs in the balance, the newsletter platform is trying to scoop up video creators. As TikTok’s future hangs in the balance, the newsletter platform is trying to scoop up video ...

Like clockwork, every Wednesday morning, Russ Thornton, an Atlanta-based advisor who specializes in helping women with retirement planning, publishes a financial newsletter called “Wealthcare for ...