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.

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

The global publishing platform Substack is generating revenue from newsletters that promote virulent Nazi ideology, white supremacy and anti-Semitism, a Guardian investigation has found. The platform, ...

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

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

Newsletter platform Substack has confirmed it suffered a security incident, leading to the compromise of users’ email addresses and phone numbers. Chris Best, the CEO of Substack, notified users of ...

Well, shit. I had several Substack subscriptions that I enjoyed. However, continuing to read those subscriptions would be like continuing to go to a Nazi bar because there are some entertaining ...

Substack’s new TV app expands the platform beyond newsletters, offering subscribers an easier way to watch video posts and livestreams on Apple TV and Google TV. The post You can now enjoy Substack on ...