Sergiu Gatlan / BleepingComputer:
Substack notifies users about a “limited” data breach in October 2025, found on February 3 and now patched; a threat actor leaked a database of ~697K records — Newsletter platform Substack is notifying users of a data breach after attackers stole their email addresses and phone numbers in October 2025.
Posted from: this blog via Microsoft Power Automate.