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.
Attackers may have snapped user locations and activity information, message warns Legacy image-sharing website Flickr suffered a data breach, according to customer emails seen by The Register.…
Substack did not specify the number of users affected by the data breach
Terminated Employee Accused of Stealing 1 Million Patient RecordsA former Nuance Communications IT worker is facing additional federal charges in an ongoing criminal case alleging he downloaded and stored on a personal hard drive with more than 1 million patient records of a Nuance client two days after he was terminated from his job in 2023.
As you know, enterprise network security has undergone significant evolution over the past decade. Firewalls have become more intelligent, threat detection methods have advanced, and access controls are now more detailed. However (and it’s a big “however”), the increasing use of mobile devices in business operations necessitates network security measures that are specifically
Photo-sharing platform Flickr is notifying users of a potential data breach after a vulnerability at a third-party email service provider exposed their real names, email addresses, IP addresses, and account activity. [...]
Also, Active Exploits Hit SolarWinds, Ivanti as APT28 Targets EU, UkraineThis week, Italy blocked Russian cyberattacks targeting the Olympics. Flaws in SolarWinds, Ivanti and Microsoft Office. Russia's APT28 ramped up attacks in Ukraine, supply chain attacks, regulators probed major breaches and a U.S. judge sentenced the operator of a darkweb drug marketplace.
Terminated Employee Accused of Stealing 1M Patient RecordsA former Nuance Communications IT worker is facing additional federal charges in an ongoing criminal case alleging he downloaded and stored on a personal hard drive with more than 1 million patient records of a Nuance client two days after he was terminated from his job in 2023.
Also, Active Exploits Hit SolarWinds, Ivanti as APT28 Targets EU, UkraineThis week, Italy blocked Russian cyberattacks targeting the Olympics. Flaws in SolarWinds, Ivanti and Microsoft Office. Russia's APT28 ramped up attacks in Ukraine, supply chain attacks, regulators probed major breaches and a U.S. judge sentenced the operator of a darkweb drug marketplace.
Terminated Employee Accused of Stealing 1M Patient RecordsA former Nuance Communications IT worker is facing additional federal charges in an ongoing criminal case alleging he downloaded and stored on a personal hard drive with more than 1 million patient records of a Nuance client two days after he was terminated from his job in 2023.
Spain's Ministry of Science (Ministerio de Ciencia) announced a partial shutdown of its IT systems, affecting several citizen- and company-facing services. [...]
Contact details were accessed in an intrusion that went undetected for months, the blogging outfit says Newsletter platform Substack has admitted that an intruder swiped user contact details months before the company noticed, forcing it to warn writers and readers that their email addresses and other account metadata were accessed without permission.…
Also: US Sanctions UK-Registered Exchanges Over Iran TiesThis week, Step Finance and CrossCurve hacks, the United States sanctioned U.K.-registered exchanges over Iran ties, forfeiture finalization of funds linked to Helix, Coinbase data breach, 2025's illicit crypto flows and a UK regulator banned Coinbase ads.
Breach-tracking site flags dataset following impersonation-based intrusion Breach-tracking site Have I Been Pwned (HIBP) claims a cyberattack on Betterment affected roughly 1.4 million users – although the investment company has yet to publicly confirm how many customers were affected by January's intrusion.…
Newsletter platform Substack is notifying users of a data breach after attackers stole their email addresses and phone numbers in October 2025. [...]
Hackers stole email addresses and other personal information from 1.4 million accounts after breaching the systems of automated investment platform Betterment in January. [...]
Leaked non-human identities like API keys and tokens are becoming a major breach driver in cloud environments. Flare shows how exposed machine credentials quietly grant attackers long-term access to enterprise systems. [...]
A hacktivist group claims a 2.3-terabyte data breach exposes the information of 36 million Mexicans, but no sensitive accounts are at risk, says government.
Affected police officers squeezed mental health services, relocated over safety fears Police Service of Northern Ireland (PSNI) employees who had their details exposed in a significant 2023 data breach will each receive £7,500 ($10,279) as part of a universal offer of compensation.…