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Stay informed on the latest data breach incidents and security breaches. Protect your information with our up-to-date breach news and analysis.

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Breach means unauthorized access to a computer system or network that exposes or steals sensitive data like personal details, passwords, or proprietary information. Attackers often exploit software flaws, weak passwords, or social engineering to gain entry. Breaches can also result from insiders misusing access or accidental data exposure.

Understanding breaches is crucial because they reveal weaknesses in security controls and can lead to data theft or operational disruption. Effective defenses include promptly patching vulnerabilities, enforcing strong authentication, and segmenting networks to limit attacker movement. Detecting breaches quickly through monitoring and logging helps contain damage and guide targeted remediation efforts to secure affected systems and data.

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Pro-Iran group Handala breached Cal Water via an exposed GPS tool, reaching billing data for 2M customers. 5GB leaked. On June 11, 2026, the Iran-linked threat group Handala posted a claim on its blog that it had compromised California Water Service, known as Cal Water, and published a 5GB proof-of-concept data dump to back it […]

Security Affairs 13 Jun 2026, 9:34 a.m. Incident · 2 stories Breach Compromise Exposure GPS Iran Leak PoC

ShinyHunters exploited a critical Oracle PeopleSoft zero-day to breach over 100 organizations, mostly universities, before a patch was available. Mandiant and Google’s Threat Intelligence Group published an analysis of an active ShinyHunters campaign on June 11, one day after Oracle finally issued an advisory for the vulnerability being exploited. The gap matters: the activity ran […]

Security Affairs 12 Jun 2026, 10:49 p.m. Incident · 9 stories 0-Day Breach Flaw Google Oracle Patch Remote Code Execution Vulnerability
Security Affairs 1 month, 1 week ago

France’s Government Messaging App Tchap Got Breached

France’s government chat app Tchap was breached after a single account was compromised, exposing messages and data from public channels. Tchap, the encrypted messaging platform developed by the French government for its civil servants and made mandatory last year, was breached on June 7. ANSSI, France’s cybersecurity agency, detected the intrusion. The vector was straightforward: […]

Security Affairs 10 Jun 2026, 8:14 p.m. Incident · 4 stories Breach Compromise Encryption France Government

ShinyHunters leaked 234 GB of data allegedly stolen from DentaQuest after failed negotiations, potentially impacting 2.6 million people. The ShinyHunters extortion group has published a 234 GB archive of data allegedly stolen from dental benefits administrator DentaQuest. The cybercrime gang added the company to its Tor data leak site in May, and the data was […]

Security Affairs 8 Jun 2026, 6:42 a.m. Incident · 2 stories Breach Cybercrime Extortion Leak Theft TOR