Newsletter platform Substack notifies users of data breach

Newsletter platform Substack is notifying users of a data breach after attackers stole their email addresses and phone numbers in October 2025. [...]

Security Aid February 5, 2026 1 minute read

Newsletter platform Substack is notifying users of a data breach after attackers stole their email addresses and phone numbers in October 2025. […]Newsletter platform Substack is notifying users of a data breach after attackers stole their email addresses and phone numbers in October 2025. […] Read MoreBleepingComputer

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