Stay informed on the latest data breach incidents and security breaches. Protect your information with our up-to-date breach news and analysis.
Search across headline titles and summaries.
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.
Google-owned Mandiant on Friday said it identified an "expansion in threat activity" that uses tradecraft consistent with extortion-themed attacks orchestrated by a financially motivated hacking group known as ShinyHunters
Parent company Cognizant hit with multiple lawsuits Thousands more Oregonians will soon receive data breach letters in the continued fallout from the TriZetto data breach, in which someone hacked the insurance verification provider and gained access to its healthcare provider customers across multiple US states.…
Also, SmarterMail Flaw, Nike Breach Probe, Empire Market Co-Creator Pleads GuiltyThis week, researchers exposed an Android RAT abusing Hugging Face. Attackers exploited a SmarterMail flaw. Automakers raised cyber spending. CISA flagged a VMware bug. Microsoft patched Office. An Empire Market co-creator pleaded guilty. Nike probed a breach.
Comstar Paid Feds $75K Last Year to Settle HIPAA Allegations in Same 2022 BreachAn ambulance billing and collections firm has agreed to pay $515,000 to Massachusetts and Connecticut regulators and implement a prescriptive information security program in the aftermath of a 2022 hacking incident affecting the sensitive information of nearly 350,000 residents in those states.
Identity Theft Resource Center Catalogs 3,322 Known US Incidents in 2025The number of U.S. organizations that reported falling victim to a data breach in 2025 reached an all-time high, while the number of notifications they sent to affected consumers fell sharply, reports the Identity Theft Resource Center's latest annual breach roundup.
Match Group, the owner of multiple popular online dating services, Tinder, Match.com, Meetic, OkCupid, and Hinge, confirmed a cybersecurity incident that compromised user data. [...]
Marquis Software Solutions, a Texas-based financial services provider, is blaming a ransomware attack that impacted its systems and affected dozens of U.S. banks and credit unions in August 2025 on a security breach reported by SonicWall a month later. [...]
The French data protection regulator said that France Travail’s response to a 2024 data breach violated GDPR
Extortion crew says it's found love in someone else's info as Match Group plays down the impact ShinyHunters has added a fresh notch to its breach belt, claiming it has pinched more than 10 million records from Match Group, a US firm that owns some of the world's most widely used swipe-based dating platforms.…
The French data protection authority fined the national employment agency €5 million (nearly €6 million) for failing to secure job seekers' data, which allowed hackers to steal the personal information of 43 million people. [...]
Reported Victim Tally in HCIactive's Health Data Theft Incident SoarsThe victim count in a 2025 hack against a Maryland-based firm that provides "AI-powered" administrative and technology services to healthcare practices soared to nearly 3.1 million nationwide, according to an updated breach report from Healthcare Interactive.
MicroWorld Technologies, the maker of the eScan antivirus product, has confirmed that one of its update servers was breached and used to distribute an unauthorized update later analyzed as malicious to a small subset of customers earlier this month. [...]
Nike is investigating what it described as a "potential cyber security incident" after the World Leaks ransomware gang leaked 1.4 TB of files allegedly stolen from the sportswear giant. [...]
The sportswear brand is investigating an alleged breach of its network that exposed some 188,347 files of highly sensitive corporate data.
The sportswear brand is investigating an alleged breach of its network that exposed some 188,347 files of highly sensitive corporate data.
Hackers have stolen the personal and contact information belonging to over 29.8 million SoundCloud user accounts after breaching the audio streaming platform's systems. [...]
Nike is investigating after the World Leaks ransomware group posted a 1.4TB data dump
Supply chain breach in eScan antivirus distributes multi-stage malware via legitimate updates
The US law firm Hagens Berman will lead a class action lawsuit against Coupang over security failures that led to a June 2025 data breach