Substack newsletter service exposed sensitive user info in massive data breach

A data breach has exposed the emails and phone numbers of millions of Substack users, raising concerns about the security of popular newsletter platforms used by writers, journalists, and creators to send direct updates to subscribers. The incident is believed to have occurred due to a flaw in Substack's email system, allowing hackers to access sensitive user information. As a result, affected users are being advised to take precautions to protect their personal data. Investigations into the breach are ongoing to determine the cause and scope of the incident.