Breach Intelligence

6,875

Total breached databases

As part of the Cit0day breach collection made public in November 2020, the Korean industry association website kessia.kr allegedly suffered a data breach. Reports suggest the exposed database contained approximately 14,000 individual records. The compromised data allegedly included email addresses, names, phone numbers, geographic locations, company information, site activity dates, and passwords stored as MySQL PASSWORD() and MD5 hashes alongside some plaintext credentials.
  • Date: Nov 4, 2020
  • Domain: kessia.kr
  • Country: South Korea
  • Category: Professional & Corporate
  • Data: Email Addresses Passwords Names Phone Numbers Geographic Locations Site Activity Company Information
  • Records: 41,511
  • Lines: 409,986
  • Size: 88.63 MB
  • Passwords: MySQL, MD5, Plaintext
Sometime before November 2020, the South Korean IT book publisher Hanbit Media (hanbit.co.kr) allegedly suffered a data breach that was later distributed as part of the Cit0day breach collection. Reports suggest approximately 23,000 records were exposed, including email addresses and passwords stored as MySQL hashes.
  • Data: Email Addresses Passwords
  • Records: 23,100
  • Lines: 23,100
  • Size: 1.38 MB
  • Passwords: MySQL
  • Cracked: 0%
In November 2017, the South Korean gaming website Gameshot.net allegedly suffered a data breach. Reports suggest approximately 370,000 records were exposed, including email addresses and IP addresses. No passwords were included in the exposed data.
  • Date: Nov 2017
  • Domain: gameshot.net
  • Country: South Korea
  • Category: Gaming
  • Data: Email Addresses IP Addresses
  • Records: 1,324,348
  • Lines: 1,324,607
  • Size: 37.64 MB
  • Passwords: No
Sometime around 2021, the South Korean web community and hosting platform gaonproject.com ("webplz") allegedly suffered a data breach. Reports suggest the member database of approximately 12,000 individuals was exposed, including email addresses, usernames, plaintext passwords, real names, phone numbers, postal addresses, dates of birth, and genders.
  • Date: 2021
  • Domain: gaonproject.com
  • Country: South Korea
  • Category: Forums & Communities
  • Data: Email Addresses Passwords Names Phone Numbers Geographic Locations Usernames Genders Site Activity Websites Company Information Birthdates
  • Records: 14,318
  • Lines: 14,324
  • Size: 3.98 MB
  • Passwords: Plaintext
In November 2017, the South Korean diet and weight-loss website gmdiet.co.kr allegedly suffered a data breach. Reports suggest approximately 4,600 individuals were affected. The exposed data included email addresses, usernames, and plaintext passwords. The data later resurfaced as part of the Cit0day breach collection in 2020.
  • Date: Nov 2017
  • Domain: gmdiet.co.kr
  • Country: South Korea
  • Category: Healthcare
  • Data: Email Addresses Passwords Usernames
  • Records: 6,888
  • Lines: 6,995
  • Size: 201.58 KB
  • Passwords: Plaintext
Sometime before 2017, the South Korean file-hosting and media-download service gotoalldisk.co.kr allegedly suffered a data breach. Reports suggest approximately 49,000 records were exposed, including email addresses and plaintext passwords.
  • Date: 2017
  • Domain: gotoalldisk.co.kr
  • Country: South Korea
  • Category: Streaming & Entertainment
  • Data: Email Addresses Passwords Geographic Locations
  • Records: 96,642
  • Lines: 96,642
  • Size: 2.25 MB
  • Passwords: Plaintext
Sometime before 2018, the Korean biochemistry and molecular biology organization at biomole.ox.or.kr allegedly suffered a data breach. Reports suggest the data surfaced as part of a large collection of databases circulated online, and it has been reported that approximately 4,700 records were exposed. The compromised data allegedly included email addresses, geographic locations, and passwords stored as MD5 and MySQL hashes.
  • Data: Email Addresses Passwords Geographic Locations
  • Records: 5,170
  • Lines: 5,170
  • Size: 246.52 KB
  • Passwords: MD5, MySQL
  • 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.