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 sophisticated attacks, tracked as DB#JAMMER, run shell commands to impair defenses and deploy tools to establish persistence on the host.
Researchers crack Key Group's ransomware encryption and release free tool for victim organizations to recover their data.
Citrix issued a patch for the critical remote code execution bug in July for its NetScaler devices.
Eight months after the cyberattack, the cloud hosting services company's remediation costs top $10 million as it tries to repair the damage caused by the Play ransomware gang.
Enterprising, or simply lazy, cybercriminals are using Lockbit v3 to cut corners on ransomware.