Breach Intelligence

2,852

Total breached databases

In December 2011 the Chinese Software Developer Network (csdn.net) website suffered a data breach that leaked 6.4 million of their users records including plaintext passwords, email addresses and usernames.
  • Data: Email Addresses Passwords Usernames
  • Records: 6,428,632
  • Lines: 6,428,632
  • Size: 273.93 MB
  • Passwords: Plaintext
In January 2016, the hacked account reseller EpicNPC suffered a data breach that impacted 409k subscribers. The impacted data included usernames, IP and email addresses and passwords stored as salted MD5 hashes.
  • Data: Email Addresses IP Addresses Passwords Usernames
  • Records: 408,670
  • Lines: 409,298
  • Size: 40.91 MB
  • Passwords: MD5 Salted
  • Cracked: 13%
After being purchased by America Movil in December of last year, Nextel Brazil was rebranded as Claro-nxt. Data from the current Brazilian phone company Nextel was compromised in the middle of 2017, exposing the personal information of more than 2.4 million users. Size: 315 MB uncompressed, 56.8 MB compressed.
  • Date: 2017
  • Domain: claro.com.br
  • Country: Brazil
  • Category: Telecommunications
  • Data: Government IDs Names Phone Numbers Physical Locations
  • Records: 2,408,185
  • Lines: 2,408,257
  • Size: 325.51 MB
  • Passwords: No
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.
  • Data: Birthdates Email Addresses Genders Geographic Locations Names Passwords Phone Numbers Usernames
  • Records: 7,409,055
  • Lines: 7,409,096
  • Size: 1.77 GB
  • Passwords: MD5
  • Cracked: 99%
In October 2016, data surfaced that was allegedly obtained from the Chinese website known as GFAN and contained 22.5M accounts. Whilst there is evidence that the data is legitimate, due to the difficulty of emphatically verifying the Chinese breach it has been flagged as "unverified". The data in the breach contains email and IP addresses, user names and salted and hashed passwords.
  • Data: Email Addresses IP Addresses Passwords Usernames
  • Records: 22,699,932
  • Lines: 22,722,399
  • Size: 1.93 GB
  • Passwords: vBulletin
  • Cracked: 56%
In October 2019, the Minnesota-based news service StarTribune suffered a data breach which was subsequently sold on the dark web. The breach exposed over 2 million unique email addresses alongside names, usernames, physical addresses, dates of birth, genders and passwords stored as bcrypt hashes.
  • Data: Birthdates Email Addresses Genders Names Passwords Physical Locations Usernames
  • Records: 6,577,010
  • Lines: 26,288
  • Size: 5.8 GB
  • Passwords: BCrypt
  • Cracked: 21%
In 2011, the Chinese e-commerce site Dangdang suffered a data breach. The incident exposed over 4.8 million unique email addresses which were subsequently traded online over the ensuing years.
  • Data: Email Addresses
  • Records: 13,150,000
  • Lines: 13,180,805
  • Size: 1.1 GB
  • Passwords: No

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.