Breach Database / TaiLieu

▍Yes — TaiLieu was breached.

• 7.3 million accounts affected
• Breach occurred 2019-11-24 · tailieu.vn
• Verified entry in the Have I Been Pwned catalog

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.

What data was exposed

• Dates of birth
• Email addresses
• Genders
• Geographic locations
• Names
• Passwords
• Phone numbers
• Usernames

What to do right now

1. Change your password for this service now. And change it anywhere you reused the same password — attackers try leaked passwords on other sites within hours ("credential stuffing").
2. Turn on two-factor authentication. Even a leaked password is useless against an account protected by a second factor. Prefer an authenticator app over SMS.
3. Be alert for smishing and SIM-swap attempts. Treat unexpected texts and "carrier" calls with suspicion; add a PIN/port-freeze with your mobile carrier.
4. Expect convincing phishing emails. Attackers use breached details to write personalized emails. Be suspicious of any message referencing this service.
5. Check your other accounts on Have I Been Pwned. Your email address may appear in other breaches you don't know about yet.
6. Monitor the apps you use going forward. Clearly watches the breach record for the companies behind your apps and alerts you the moment one appears.

Breach data from Have I Been Pwned. Listing here means the service appears in the public breach record — not that your personal data was affected.