In January 2020, the math solving website Mathway suffered a data breach that exposed over 25M records. The data was subsequently sold on a dark web marketplace and included names, Google and Facebook IDs, email addresses and salted password hashes.
Compromised data: Device information, Email addresses, First names, Last names, Passwords, Social media profiles, Website activity.
On the News:
https://www.zdnet.com/article/25-million-user-records-leak-online-from-popular-math-app-mathway/
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