CISA confirms critical Cleo bug exploitation in ransomware attacks
CISA confirmed today that a critical remote code execution bug in Cleo Harmony, VLTrader, and LexiCom file transfer software is being exploited in ransomware attacks. [...]
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.
CISA confirmed today that a critical remote code execution bug in Cleo Harmony, VLTrader, and LexiCom file transfer software is being exploited in ransomware attacks. [...]
The Romanian National Cybersecurity Directorate (DNSC) says the Lynx ransomware gang breached Electrica Group, one of the largest electricity suppliers in the country. [...]
The U.S. Treasury Department has sanctioned Chinese cybersecurity company Sichuan Silence and one of its employees for their involvement in a series of Ragnarok ransomware attacks targeting U.S. critical infrastructure companies and many other victims worldwide in April 2020. [...]
Artivion, a leading manufacturer of heart surgery medical devices, has disclosed a November 21 ransomware attack that disrupted its operations and forced it to take some systems offline. [...]
Electrica Group, a key player in the Romanian electricity distribution and supply market, is investigating a ransomware attack that was still "in progress" earlier today. [...]