The Dutch phone giant Odido is the latest phone and internet company to be hacked in recent months, as governments and ...
Substack said that customer data was accessed in October 2025, but wasn't discovered until early February.
Substack confirms a major data breach exposing user emails and phone numbers. What’s behind the breach, and what’s next?
The company has emailed affected users after a dark web source claims the data of almost 700,000 users was compromised.
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If you’re impacted by the security incident, you’ll hear directly from the brand with an email from Substack's CEO.
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Hackers stole personal information such as names, addresses, and phone numbers from a customer contact system.
The hacker claims to have stolen nearly 700,000 Substack user records, including email addresses and phone numbers.
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Substack won't share official numbers, but it seems like a pretty significant data breach.