Ransomware encrypts or steals data to disrupt operations and extort victims, making backups, access controls, and incident response essential.
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Background for this topic.
Ransomware is malware used to deny access to systems or data, usually by encrypting files and demanding payment for decryption. Many operations also steal sensitive information and threaten to publish it, so an attack can create both an availability crisis and a privacy or disclosure risk. Initial access may involve phishing, stolen credentials, exposed remote services, or exploitation of unpatched vulnerabilities; attackers may then move through the network before deploying the payload.
Defenses should combine vulnerability management, phishing-resistant authentication where practical, endpoint and network monitoring, and backups that are isolated from routine administrator access and regularly tested for recovery. Organizations should also limit privileges and segment critical systems to reduce the blast radius. An incident requires rapid containment, preservation of forensic evidence, restoration from known-good backups, and assessment of notification, legal, and regulatory obligations. Threat intelligence can help identify relevant criminal infrastructure or tactics, but it does not replace sound access control, patching, detection, and recovery practices.
The ransomware actor 'ShadowSyndicate' was observed scanning for servers vulnerable to CVE-2024-23334, a directory traversal vulnerability in the aiohttp Python library. [...]
A new variant of StopCrypt ransomware (aka STOP) was spotted in the wild, employing a multi-stage execution process that involves shellcodes to evade security tools. [...]
A new variant of StopCrypt ransomware (aka STOP) was spotted in the wild, employing a multi-stage execution process that involves shellcodes to evade security tools. [...]
Nissan Oceania is warning of a data breach impacting 100,000 people after suffering a cyberattack in December 2023 that was claimed by the Akira ransomware operation. [...]
The U.S. Department of Health and Human Services is investigating whether protected health information was stolen in a ransomware attack that hit UnitedHealthcare Group (UHG) subsidiary Optum, which operates the Change Healthcare platform, in late February. [...]
Russian-Canadian cybercriminal Mikhail Vasiliev has been sentenced to four years in prison by an Ontario court for his involvement in the LockBit ransomware operation. [...]
Stanford University says the personal information of 27,000 individuals was stolen in a ransomware attack impacting its Department of Public Safety (SUDPS) network. [...]
New York-based securities lending platform EquiLend Holdings confirmed in data breach notification letters sent to employees that their data was stolen in a January ransomware attack. [...]