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.

Michael Burry has been erratically going bearish on the market multiple times in the past few years, but this time, he might ...

Substack states that the security flaw has now been fixed and that a full investigation is underway. There are currently no ...

"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.

The influential author derides secularism and the modern world. Conservatives—including the vice president—are joining him on a march back to the Middle Ages.

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

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

The digital publishing platform Substack has told some of its users that their data was stolen in a security breach. The ...

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

Lynch Carpenter is a national class action law firm with offices in Pennsylvania, California, and Illinois. Our firm has represented millions of clients in data privacy matters for more than a decade ...

The company has emailed affected users after a dark web source claims the data of almost 700,000 users was compromised.