TaiLieu Data Breach

What happened

In November 2019, the Vietnamese education website TaiLieu allegedly suffered a data breach exposing 7.3M customer records. Impacted data included names and usernames, email addresses, dates of birth, genders and passwords stored as unsalted MD5 hashes. The data was provided to HIBP by dehashed.com after being shared on a popular hacking forum. TaiLieu did not respond when contacted about the incident.

Exposed data

Recommended actions

• Change your TaiLieu password immediately, and update it anywhere you reused the same password.
• Enable two-factor authentication on the affected account and on your critical services (email, banking).
• Watch for targeted phishing emails referencing TaiLieu — attackers weaponise breach data quickly.
• Stay alert for smishing (SMS phishing) and SIM-swap attempts using your phone number.
• Exposed identity data raises identity-theft risk — consider credit monitoring or a credit freeze.