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.
Nevada’s CIO confirmed in a press conference that ransomware actors had exfiltrated data from state networks, amid an ongoing incident investigation
Microsoft observed Storm-0501 pivot to the victim’s cloud environment to exfiltrate data rapidly and prevent the victim’s recovery
While still in development, PromptLock is described as the “first known AI-powered ransomware” by ESET researchers
A new version of the Hook Android banking Trojan features 107 remote commands, including ransomware overlays
Data I/O has revealed operational disruption following a ransomware breach that forced it to take some systems offline