Yam
Data Breach
www.yam.com7,497,654
Records Exposed
Jun 2013
Date of Breach
Database
Breach Type
Oct 2026
Added to Database
About This Breach
In June 2013, Yam (蕃薯藤), Taiwan's first web portal founded in 1997, suffered a data breach that exposed the personal records of over 13 million users. The data surfaced publicly on a hacking forum in 2021 and was subsequently distributed through Telegram channels. The compromised records included email addresses, usernames, display names, Taiwanese national identification numbers, dates of birth, phone numbers and physical addresses, alongside unsalted MD5 password hashes. The breach is one of the larger exposures of Taiwanese user data and was reported to and verified by Have I Been Pwned, which lists 13,258,797 unique email addresses.
Compromised Data Types
Country
Taiwan
Language
Chinese
Category
Online Portal
Indexed On
Oct 14, 2026
Breach Type
Database
What Should You Do?
Get Full Breach Details with LeakedSource Pro
Sign up for a LeakedSource Pro account to see exactly what data was exposed in this breach and get real-time notifications when your information appears in new breaches.
Sign Up for Pro- Change your password immediately on Yam and any other site where you used the same password. Use a unique, strong password for each account.
- Watch for phishing emails targeting your inbox. Attackers may use your exposed email address to send convincing scam messages.
- Be alert to smishing attacks (SMS phishing). Scammers may text you pretending to be banks or service providers.
- Enable two-factor authentication (2FA) on all important accounts to add an extra layer of security.
- Use a password manager to generate and store unique, strong passwords for every account.
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