Substack removed a post that claimed to be from Luigi Mangione, the suspect in the fatal shooting of a UnitedHealthcare executive, saying it violated guidelines that prohibit impersonation. Social ...

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

If you've been anywhere near Substack in the last few days, you may have seen mention of the plagiarism scandal currently tearing through the platform. With Substack's #1 New Bestseller being accused ...

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

Luigi Mangione, the suspect charged with murder in UnitedHealthcare CEO Brian Thompson’s December 4 shooting death, left a handwritten document explaining his motivation, New York City police ...

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

As TikTok's future in the U.S. remains uncertain, Substack tries to lure creators to its platform by doubling down on video. The company announced on Wednesday that it's now allowing creators to ...

Michigan Gov. Gretchen Whitmer (D) started a Substack on Monday as speculation swirls about a potential 2028 presidential bid ...

Luigi Mangione, the suspect charged with murder in UnitedHealthcare CEO Brian Thompson’s Dec. 4 shooting death, left a handwritten document explaining his motivation, New York City police officials ...