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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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Background for this topic.

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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Krebs on Security 3 years, 11 months ago

911 Proxy Service Implodes After Disclosing Breach

911[.]re, a proxy service that since 2015 has sold access to hundreds of thousands of Microsoft Windows computers daily, announced this week that it is shutting down in the wake of a data breach that destroyed key components of its business operations. The abrupt closure comes ten days after KrebsOnSecurity published an in-depth look at 911 and its connections to shady pay-per-install affiliate programs that secretly bundled 911’s proxy software with other titles, including “free” utilities and pirated software.

Krebs on Security 30 Jul 2022, 7:34 a.m. Breach Microsoft Piracy Proxy
Krebs on Security 3 years, 11 months ago

Breach Exposes Users of Microleaves Proxy Service

Microleaves, a ten-year-old proxy service that lets customers route their web traffic through millions of Microsoft Windows computers, exposed their entire user database and the location of tens of millions of PCs running the proxy software. Microleaves claims its proxy software is installed with user consent. But research suggests Microleaves has a lengthy history of being supplied with new proxies by affiliates incentivized to install the software any which way they can -- such as by secretly bundling it with other software.

Krebs on Security 29 Jul 2022, 6:52 a.m. Breach Database Exposure Microsoft Proxy Research
Krebs on Security 3 years, 11 months ago

A Retrospective on the 2015 Ashley Madison Breach

It's been seven years since the online cheating site AshleyMadison.com was hacked and highly sensitive data about its users posted online. The leak led to the public shaming and extortion of many AshleyMadison users, and to at least two suicides. To date, little is publicly known about the perpetrators or the true motivation for the attack. But a recent review of AshleyMadison mentions across Russian cybercrime forums and far-right underground websites in the months leading up to the hack revealed some previously unreported details that may deserve further scrutiny.

Krebs on Security 27 Jul 2022, 1:04 p.m. Breach Cybercrime Extortion Forums Hacking Leak Russia