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.
After the U.S. Cybersecurity and Infrastructure Security Agency (CISA) released a decryptor for affected victims to recover from ESXiArgs ransomware attacks, the threat actors have bounced back with an updated version that encrypts more data
All that data coming soon to a darkweb crime forum near you? Several California medical groups have sent security breach notification letters to more than three million patients alerting them that crooks may have stolen a ton of their sensitive health and personal information during a ransomware infection in December.…
From ongoing attacks targeting ESXi servers to sanctions on Conti/TrickBot members, it has been quite a busy week regarding ransomware. [...]
The City of Oakland was hit by a ransomware attack on Wednesday night that forced it to take all systems offline until the network is secured and affected services are brought back online. [...]
The California-based networking hardware manufacturer 'A10 Networks' has confirmed to BleepingComputer that the Play ransomware gang briefly gained access to its IT infrastructure and compromised data. [...]
The Clop ransomware gang claims to be behind recent attacks that exploited a zero-day vulnerability in the GoAnywhere MFT secure file transfer tool, saying they stole data from over 130 organizations. [...]
The Clop ransomware gang claims to be behind recent attacks that exploited a zero-day vulnerability in the GoAnywhere MFT secure file transfer tool, saying they stole data from over 130 organizations. [...]
The US Treasury Department linked the notorious cybercrime gang to Russian Intelligence Services because cyberattacks that disrupted hospitals and other critical infrastructure align with Russian state interests.
Multiple medical groups in the Heritage Provider Network in California have suffered a ransomware attack, exposing sensitive patient information to cybercriminals. [...]
The latest iteration of the document is now analyzing activity by the Maui and H0lyGh0st groups
A new cybersecurity advisory from the U.S. Cybersecurity & Infrastructure Security Agency (CISA) describes recently observed tactics, techniques, and procedures (TTPs) observed with North Korean ransomware operations against public health and other critical infrastructure sectors. [...]
State-backed hackers from North Korea are conducting ransomware attacks against healthcare and critical infrastructure facilities to fund illicit activities, U.S. and South Korean cybersecurity and intelligence agencies warned in a joint advisory
Here are three of the worst breaches, attacker tactics and techniques of 2022, and the security controls that can provide effective, enterprise security protection for them
In a first-of-its-kind coordinated action, the U.K. and U.S. governments on Thursday levied sanctions against seven Russian nationals for their affiliation to the TrickBot, Ryuk, and Conti cybercrime operation
Any act that sends so much as a ruble to seven named netizens now forbidden The US and UK have sanctioned seven Russians for their alleged roles in disseminating Conti and Ryuk ransomware and the Trickbot banking trojan.…
Schools paying higher ransoms and seeing longer closures, according to survey of parents.
Authorities in the United States and United Kingdom today levied financial sanctions against seven men accused of operating "Trickbot," a cybercrime-as-a-service platform based in Russia that has enabled countless ransomware attacks and bank account takeovers since its debut in 2016. The U.S. Department of the Treasury says the Trickbot group is associated with Russian intelligence services, and that this alliance led to the targeting of many U.S. companies and government entities.
The United States and the United Kingdom have sanctioned seven Russian individuals for their involvement in the TrickBot cybercrime group, whose malware was used to support attacks by the Conti and Ryuk ransomware operation. [...]
A single ransomware attack on a New Zealand managed service provider (MSP) disrupted several of its clients' business operations overnight, most belonging to the healthcare sector. According to the country's privacy commissioner, "a cyber security incident involving a ransomware attack" in late November upended the daily operations of New Zealand's health ministry when it prevented the staff
New ESXiArgs ransomware attacks are now encrypting more extensive amounts of data, making it much harder, if not impossible, to recover encrypted VMware ESXi virtual machines. [...]