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

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

We keep an eye out for the most interesting stories about Labby subjects: digital media, startups, the web, journalism, strategy, and more. Here’s some of what we’ve seen lately.

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

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

Substack has removed several publications for inciting violence, the newsletter publisher said in a statement shared with CNN Tuesday, as writers from across the platform threaten ed to quit over the ...

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 ...

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

Facing a fractured media landscape and an increasingly skeptical electorate, politicians are turning to podcasts and newsletter platform Substack as direct-to-voter platforms, reshaping how campaigns ...

Add Yahoo as a preferred source to see more of our stories on Google. Subscribe to our brand-new Substack channel all about the Billboard charts — a must-read for music fans, industry professionals ...

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 ...