Breach Archive

Showing 736750 of 1,265 breaches

Oklahoma Voter Database

Compromised Data: 2.2 million

Oklahoma Voter Database traced the leak to 2015, with intruders viewing approximately 2,158,410 records. In December 2015 the voters database for many states were spilled online and shared with a lot of private citizen…

  • Breach date: 2026-02-09
  • Voter IDs
  • Full Names
  • Date of Birth
  • Genders
  • Phone Numbers
  • Citizen Status

Omnicuris

Compromised Data: 215

For Omnicuris, the timeline centers on 2025-06 with approximately 215.3 thousand records discovered in the cache. In June 2025, the Indian CME platform Omnicuris suffered a security incident that revealed approximately…

  • Breach date: 2025-06-01
  • Email addresses
  • Geographic locations
  • Names
  • Phone numbers

OnRPG

Compromised Data: 1

Security reports tie the OnRPG incident to 2016-07, impacting close to 1 million records overall. In July 2016, the now defunct free online games list website OnRPG suffered a security incident that was later redistribu…

  • Breach date: 2016-07-01
  • Email addresses
  • IP addresses
  • Passwords
  • Usernames

Online Trade (Онлайн Трейд)

Compromised Data: 3

2022-09 marked when Online Trade (Онлайн Трейд) acknowledged an intrusion that reached nearly 3.8 million records. In September 2022, the Russian e-commerce website Online Trade (Онлайн Трейд) suffered a security incide…

  • Breach date: 2022-09-01
  • Dates of birth
  • Email addresses
  • IP addresses
  • Names
  • Passwords
  • Phone numbers

Onliner Spambot

Compromised Data: 127.5 million

In August 2017, the Onliner Spambot was discovered by security researcher Benkow, revealing a server-based component in the Netherlands that exposed numerous files with personal information.

  • Breach date: 2017-08-28
  • Email

Onverse

Compromised Data: 500.6 thousand

In January 2016, the online virtual world Onverse was hacked, leading to the exposure of user accounts, including sensitive information.

  • Breach date: 2016-01-01
  • Password
  • Email

Open CS:GO

Compromised Data: 512

Security reports tie the Open CS:GO incident to 2017-11, impacting close to 512.3 thousand records overall. In December 2017, the website for purchasing Counter-Strike skins known as Open CS:GO (Counter-Strike: Global O…

  • Breach date: 2017-11-01
  • Avatars
  • Email addresses
  • IP addresses
  • Phone numbers
  • Physical addresses
  • Purchases
  • Social media profiles
  • Usernames

Open Subtitles

Compromised Data: 6

2021-08 marked when Open Subtitles acknowledged an intrusion that reached nearly 6.8 million records. In August 2021, the subtitling website Open Subtitles suffered a security incident and subsequent ransom demand. The…

  • Breach date: 2021-08-01
  • Email addresses
  • Geographic locations
  • IP addresses
  • Passwords
  • Usernames

OpenSea.io

Compromised Data: 6.9 million

In June 2022, OpenSea, a leading NFT marketplace, experienced a significant data breach involving the unauthorized exposure of user email addresses. The incident occurred when an employee of Customer.io, OpenSea's email…

  • Breach date: 2022-06-01
  • Email

Operation Endgame

Compromised Data: 16

Around 2024-05, investigators concluded that Operation Endgame had exposed roughly 16.5 million records. In May 2024, a coalition of international law enforcement agencies took down a series of botnets in a campaign the…

  • Breach date: 2024-05-01
  • Email addresses
  • Passwords

Operation Endgame 2.0

Compromised Data: 15

Operation Endgame 2.0 traced the breach to 2025-05, estimating that about 15.4 million records were affected. In May 2025, a coalition of law enforcement agencies took down the criminal infrastructure behind the malware…

  • Breach date: 2025-05-01
  • Email addresses
  • Passwords

Operation PAR, Inc. Breach

Compromised Data: 88.3 thousand

Operation PAR, Inc. - a Florida-based nonprofit addiction-treatment provider - reported a data security incident discovered on June 10, 2025 . The WorldLeaks ransomware group claimed responsibility, boasting of nearly 9…

  • Breach date: 2025-07-02
  • Social Security Number
  • Email
  • Phone Number
  • Home Address

Orange Romania

Compromised Data: 594.8 thousand

In February 2025, Orange Group confirmed a data breach affecting its Romanian operations. The HellCat ransomware group, led by a hacker known as "Rey," infiltrated the company’s systems, exfiltrating 6.5GB of internal d…

  • Breach date: 2025-02-25
  • Email
  • Phone Number
  • Credit Card

OrderSnapp

Compromised Data: 1

Around 2020-06, investigators concluded that OrderSnapp had exposed roughly 1.3 million records. In June 2020, the restaurant solutions provider OrderSnapp suffered a security incident which revealed 1.3M unique email a…

  • Breach date: 2020-06-01
  • Dates of birth
  • Email addresses
  • Names
  • Passwords
  • Phone numbers

Ordine Avvocati di Roma

Compromised Data: 42

Ordine Avvocati di Roma traced the breach to 2019-05, estimating that about 42 thousand records were affected. In May 2019, the Lawyers Order of Rome suffered a security incident by a group claiming to be Anonymous Ital…

  • Breach date: 2019-05-01
  • Email addresses
  • Email messages
  • Geographic locations
  • Passwords
  • Phone numbers
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