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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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Carnival disclosed a data breach affecting nearly 6 million people after hackers used social engineering to access employee accounts. Carnival Corporation is notifying nearly 6 million people after a data breach exposed personal information. According to the notification shared with the Maine Attorney General’s Office, the total number of persons affected is 5,995,277. The company said […]

Security Affairs 29 May 2026, 7:32 a.m. Incident · 3 stories Breach Disclosure Exposure Notification PII Social Engineering

The Oncology Institute disclosed a data breach tied to a third-party vendor, potentially exposing patient information after a 2025 cyberattack. The Oncology Institute has confirmed that patient information was impacted in a cybersecurity incident involving a third-party software provider. The healthcare network first disclosed the security breach in November 2025 while the vendor’s investigation was […]

Security Affairs 26 May 2026, 5:25 p.m. Incident · 3 stories Breach Critical Infrastructure Cyberattack Disclosure Healthcare Incident Investigation Vendor
Security Affairs 1 month, 3 weeks ago

340 Million OnlyFans Profiles Allegedly Rebuilt from Leaks

A hacker is selling a 340M-strong OnlyFans-linked dataset built by correlating old breaches and public data, not by hacking OnlyFans directly. A threat actor is adverertising a purported database containing data of 340 million OnlyFans users, but the available evidence points to something less dramatic than a direct breach. According to HackRead, which reported the […]

Security Affairs 26 May 2026, 5:10 a.m. Breach Database Hacking Leak Threat Actor