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.
Ransomware gangs target exposed Citrix Netscaler devices using a publicly available exploit to breach large organizations, steal data, and encrypt files. [...]
Yamaha Motor's Philippines motorcycle manufacturing subsidiary was hit by a ransomware attack last month, resulting in the theft and leak of some employees' personal information. [...]
The British Library confirmed that a ransomware attack is behind a major outage that is still affecting services across several locations. [...]
The Federal Bureau of Investigation and the Cybersecurity and Infrastructure Security Agency released an advisory about the evasive threat actor tracked as Scattered Spider, a loosely knit hacking collective that now collaborates with the ALPHV/BlackCat Russian ransomware operation.. [...]
Toyota Financial Services (TFS) has confirmed that it detected unauthorized access on some of its systems in Europe and Africa after Medusa ransomware claimed an attack on the company. [...]
The ALPHV/BlackCat ransomware operation has taken extortion to a new level by filing a U.S. Securities and Exchange Commission complaint against one of their alleged victims for not complying with the four-day rule to disclose a cyberattack. [...]
The Toronto Public Library (TPL) confirmed that the personal information of employees, customers, volunteers, and donors was stolen from a compromised file server during an October ransomware attack. [...]
The FBI and CISA warned today of Rhysida ransomware gang's opportunistic attacks targeting organizations across multiple industry sectors. [...]
The Lockbit ransomware attacks use publicly available exploits for the Citrix Bleed vulnerability (CVE-2023-4966) to breach the systems of large organizations, steal data, and encrypt files. [...]
The FBI and CISA revealed in a joint advisory that the Royal ransomware gang has breached the networks of at least 350 organizations worldwide since September 2022. [...]
The LockBit ransomware gang published data stolen from Boeing, one of the largest aerospace companies that services commercial airplanes and defense systems. [...]