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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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Cybersecurity Startup Exposed Lilli Using a Flaw as Old as the WebSecurity startup CodeWall disclosed this week that its autonomous AI agent breached McKinsey's internal AI platform Lilli in two hours on Feb. 28, accessing tens of millions of messages and hundreds of thousands of files through a basic, years-old database flaw.

Also, More ClickFix Attacks and Teen Booters Arrested in PolandThis week, Russian hackers targeted Signal and WhatsApp users, permit-fee phishing hit U.S. applicants, ClickFix on WordPress sites, Microsoft patched 80 bugs, a 14K-router botnet, Polish teens held over DDoS tools and Finland warned of Russian, Chinese espionage. North Korean IT workers for hire.

Tehran-Linked Handala Hackers Disrupt Medtech Giant Stryker, Claim Verifone BreachAs the United States and Israel continue their war with Iran, Tehran-linked hacking group Handala has entered the fray, claiming credit for wiping systems at medical technology firm Stryker, which confirmed the attack, as well as breaching payment device maker Verifone, which denied being breached.