Breach Intelligence

6,875

Total breached databases

In May 2011, the Chinese Android site MuMaYi allegedly suffered a data breach affecting approximately 133,000 subscribers. Reports suggest the breach compromised email addresses, IP addresses, usernames, dates of birth, and passwords stored as MD5 hashes.
  • Data: Email Addresses Passwords Usernames IP Addresses Site Activity Birthdates
  • Records: 132,571
  • Lines: 132,630
  • Size: 51.18 MB
  • Passwords: MD5
  • Cracked: 25%
In 2014, the website me2wg.com allegedly suffered a data breach. Reports suggest approximately 306,000 records were exposed, including email addresses, usernames, salted MD5 password hashes, IP addresses, and site activity data.
  • Date: 2014
  • Domain: me2wg.com
  • Country: China
  • Category: Others
  • Data: Email Addresses Passwords Geographic Locations Usernames IP Addresses Site Activity
  • Records: 306,168
  • Lines: 306,237
  • Size: 40.1 MB
  • Passwords: MD5 Salted
  • Cracked: 0%
In 2021, TianYanCha allegedly suffered a data breach. TianYanCha is a Chinese website that provides data on businesses, including company registration records, legal cases, patent information, and more. It is widely used for corporate due diligence and business intelligence. The incident reportedly involved the exposure of approximately 2,086,534 records. The compromised data includes email addresses, names, phone numbers, and geographic locations.
  • Date: 2021
  • Domain: tianyanca.com
  • Country: China
  • Category: Professional & Corporate
  • Data: Email Addresses Names Phone Numbers Geographic Locations
  • Records: 2,086,534
  • Lines: 2,086,535
  • Size: 1.07 GB
  • Passwords: No
In approximately 2015, Mop.com, a Chinese gaming website and online forum, suffered a data breach exposing over 2.1 million user records. The incident reportedly compromised more than 1.8 million unique email addresses along with plaintext passwords.
  • Date: 2015
  • Domain: mop.com
  • Country: China
  • Category: Gaming
  • Data: Email Addresses Passwords
  • Records: 1,893,973
  • Lines: 2,167,944
  • Size: 56 MB
  • Passwords: Plaintext
In approximately October 2011, the Chinese social-media website Kaixin001 suffered a data breach that impacted 8.2 million members. The breach included Email addresses, Usernames and Passwords stored in Plaintext. Kaixin001 concluded that the hacked credentials were acquired via brute forcing rather than by infiltrating their database.
  • Data: Email Addresses Passwords Usernames
  • Records: 8,288,761
  • Lines: 8,288,755
  • Size: 334.22 MB
  • Passwords: Plaintext

Haijiao 2023

Sensitive
In October 2023, Haijiao.com, a Chinese adult forum, experienced a data breach that exposed information on over 4.8 million users. Among the compromised data were email addresses, usernames, passwords, IP addresses, phone numbers, site activity, and account balances.
  • Date: Oct 2023
  • Country: China
  • Category: Pornography
  • Data: Email Addresses Passwords Usernames IP Addresses Phone Numbers Site Activity Balances
  • Records: 4,871,024
  • Lines: 4,871,025
  • Size: 4.35 GB
  • Passwords: BCrypt
  • Cracked: 0%
In December 2011, Renren.com, a Chinese social networking platform often referred to as the "Facebook of China," experienced a data breach that exposed approximately 4.7 million user records. The compromised data included email addresses and passwords stored in plaintext.
  • Data: Email Addresses Passwords
  • Records: 4,768,501
  • Lines: 4,768,600
  • Size: 156.38 MB
  • Passwords: Plaintext

Frequently Asked Questions

A data breach is unauthorized access to data (often involving account takeover, malware, or misconfigured infrastructure). A data leak is exposure of data due to mistakes like public cloud storage, open databases, or accidental publishing. A database dump is a packaged dataset that may come from a breach, leak, scraping, or aggregation.

Change passwords for any affected accounts immediately, prioritizing email, banking, and any account that shares the same password. Enable multi-factor authentication wherever possible. Monitor your accounts for suspicious activity and consider placing a fraud alert or credit freeze if financial data was exposed.

Start with containment and verification: confirm what data was exposed, identify the entry point, rotate credentials (especially SSO, VPN, email), and enforce MFA. Then investigate affected systems, notify stakeholders as required, and harden controls to prevent recurrence. A structured incident response plan helps keep the work measurable and compliant.

Dark web monitoring helps you spot exposure signals early — before stolen data is widely reused for account takeover or targeted attacks. Monitoring complements vulnerability management by revealing when attackers already have leverage. Pair it with continuous attack surface monitoring and strong Asset Discovery to reduce blind spots.

Not always. Some datasets are old, incomplete, or derived from third parties. However, any exposure increases risk because credentials and personal data can be reused indefinitely. Treat it as a priority signal: rotate credentials, enforce MFA, review suspicious logins, and audit the systems that could have produced the data.

SynScan helps you connect the dots between attack surface exposure, vulnerabilities, and breach signals so you can prioritize remediation and reduce the chance of repeat incidents.