Breach Intelligence

6,871

Total breached databases

In November 2020, matheplanet.com allegedly suffered a data breach as part of the Cit0day breach collection. Matheplanet is a German online community and forum dedicated to mathematics. It has been reported that approximately 34,000 individuals were affected. The exposed data included email addresses, usernames, and passwords stored predominantly as md5crypt hashes.
  • Date: Nov 4, 2020
  • Domain: matheplanet.com
  • Country: Germany
  • Category: Forums & Communities
  • Data: Email Addresses Passwords Usernames
  • Records: 38,140
  • Lines: 38,140
  • Size: 2.09 MB
  • Passwords: DES, MD5Crypt, SHA-256crypt, Unknown
Sometime before November 2020, the German dog-health community forum Gesunde Hunde (gesundehunde.com) allegedly suffered a data breach. The exposed data surfaced as part of the Cit0day breach collection released in November 2020. Reports suggest approximately 18,000 records were exposed, including email addresses, usernames, IP addresses, and passwords stored as bcrypt and vBulletin hashes.
  • Date: Nov 4, 2020
  • Domain: gesundehunde.com
  • Country: Germany
  • Category: Forums & Communities
  • Data: Email Addresses Passwords Geographic Locations Usernames IP Addresses
  • Records: 18,287
  • Lines: 18,287
  • Size: 2.01 MB
  • Passwords: BCrypt, vBulletin
  • Cracked: 0%
Sometime before 2024, the German fashion wholesaler Hegler Fashion (hegler-fashion.de) allegedly suffered a data breach. Hegler Fashion is an Essen-based business-to-business supplier of women's knitwear. Reports suggest approximately 2,000 records were exposed, consisting of the email addresses of its retail customers alongside internal customer account numbers.
  • Data: Email Addresses Geographic Locations
  • Records: 2,095
  • Lines: 2,096
  • Size: 64.9 KB
  • Passwords: No
Sometime before November 2020, hessenparty.de, a German online event and community portal for the state of Hesse, allegedly suffered a data breach that later surfaced as part of the Cit0day breach collection. Reports suggest approximately 11,000 individuals were affected. The exposed data allegedly included email addresses and MD5-hashed passwords.
  • Date: Nov 4, 2020
  • Domain: hessenparty.de
  • Country: Germany
  • Category: Streaming & Entertainment
  • Data: Email Addresses Passwords Geographic Locations
  • Records: 11,726
  • Lines: 11,726
  • Size: 628.79 KB
  • Passwords: MD5
  • Cracked: 0%
In November 2020, finanznavigator.de allegedly suffered a data breach as part of the Cit0day collection, a set of more than 23,000 breached websites made available on hacking forums. The site is a German financial information and personal-finance portal. Reports suggest approximately 7,500 records were exposed, including email addresses and MD5-hashed passwords.
  • Data: Email Addresses Passwords Geographic Locations
  • Records: 13,697
  • Lines: 13,706
  • Size: 709.1 KB
  • Passwords: MD5
  • Cracked: 0%
At an unknown date, the German fischertechnik enthusiast community website ft:community (ftcommunity.de) allegedly suffered a data breach. Reports suggest approximately 2,100 records were exposed, including email addresses and MD5 password hashes.
  • Data: Email Addresses Passwords Geographic Locations
  • Records: 2,129
  • Lines: 2,129
  • Size: 115.76 KB
  • Passwords: MD5
  • Cracked: 0%
In November 2020, German social networking site flinky.de allegedly suffered a data breach that surfaced as part of the Cit0day breach collection. Reports suggest approximately 8,800 records were exposed, including email addresses and MD5-hashed passwords.
  • Date: Nov 4, 2020
  • Domain: flinky.de
  • Country: Germany
  • Category: Social Media & Communication
  • Data: Email Addresses Passwords Geographic Locations
  • Records: 8,947
  • Lines: 8,948
  • Size: 481.32 KB
  • Passwords: MD5
  • Cracked: 0%

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.