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.
Substack won't share official numbers, but it seems like a pretty significant data breach.
The company has emailed affected users after a dark web source claims the data of almost 700,000 users was compromised.
The hacker claims to have stolen nearly 700,000 Substack user records, including email addresses and phone numbers.
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 ...
War and Power Who Wins Wars―and Why by Phillips Payson O’Brien PublicAffairs, 276 pp., $30. WHY DO COUNTRIES WIN OR LOSE wars ...
Ex-Prince Andrew’s secretive midnight move from Royal Lodge, the drip-drip of fresh Epstein revelations, and a widening split ...
PCMag on MSN
Another week, another data disaster: Substack, Coinbase, and a malicious Notepad++ update
If you have accounts on any of these services, now's a good time to check your security settings. Plus more from a busy week ...
A massive re-analysis of findings on AI and learning shows universities may be rebuilding around a technology with no ...
Substack has confirmed a major data breach that exposed emails and phone numbers for approximately 700,000 users, with the ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results