Ransomware encrypts or steals data to disrupt operations and extort victims, making backups, access controls, and incident response essential.
Search across headline titles and summaries.
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.
A new multi-stage phishing campaign has been observed targeting users in Russia with ransomware and a remote access trojan called Amnesia RAT
Suppliers May Be Asked for Evidence of Certain Security Controls, Best PracticesThe National Health Service in England will reach out directly to suppliers to ensure they implement proactive and robust cybersecurity risk management, officials said Wednesday. The move comes after recent high-profile ransomware attacks on NHS vendors that seriously disrupted patient care.
Russia-Linked Ransomware Group Dumps Customer Data After Failed Extortion AttemptUnder Armour may trade on the "blood, sweat, respect" slogan, but a Russia-linked ransomware group hasn't been abiding, after they stole data pertaining to 72.7 million of the athleisure giant's customers, then leaked it on darkweb sites after saying the retailer refused to pay a ransom.
Also, CIRO Phishing Breach, Ingram Micro Ransomware and CVE SurgeThis week, DOGE posted sensitive data on an outside server. A phishing attack affected 750,000 Canadians. A hacktivism warning from the U.K. NCSC. An Ingram Micro breach. CVEs surged in 2025. SK Telecom challenged a fine. Researchers disclosed Chainlit flaws. North Korean hackers abused VS Code.
Cybersecurity researchers have disclosed details of a new ransomware family called Osiris that targeted a major food service franchisee operator in Southeast Asia in November 2025
An operational security failure allowed researchers to recover data that the INC ransomware gang stole from a dozen U.S. organizations. [...]
Have I Been Pwned reckons 72.7M customer accounts affected, sportswear firm remains silent Have I Been Pwned (HIBP) says 72.7 million accounts registered with Under Armour were affected by an alleged ransomware attack in November.…
Findings From WEF's 2026 Report Show Shifting Cyber Priorities as AI Reshapes RiskCyber-enabled fraud has overtaken ransomware as the top cybersecurity concern for CEOs heading into 2026, according to the World Economic Forum's Global Cybersecurity Outlook 2026, released ahead of the Davos meeting. AI is a top emerging technology affecting both cyber risk and cyber defense.
Ransomware attackers targeting a Fortune 100 company in the finance sector used a new malware strain, dubbed PDFSider, to deliver malicious payloads on Windows systems. [...]
Crackdown Targets Multiple Members of Cybercrime Group, Including 'Hash Crackers'Police raided two suspected members of the notorious Black Basta ransomware group - tied to over 600 victims worldwide and many millions in ransom payments - in Ukraine and issued an international arrest warrant for the Russian national suspected of being the operation's founder and ringleader.
Feras Albashiti faces 10 years after $20,000 in sales to undercover agent exposed ransomware ties A Jordanian national faces sentencing in the US after pleading guilty to acting as an initial access broker (IAB) for various cyberattacks.…
Information technology giant Ingram Micro has revealed that a ransomware attack on its systems in July 2025 led to a data breach affecting over 42,000 individuals. [...]
Maine filing confirms July attack affected 42,521 employees and job applicants Ingram Micro disclosed that a July 2025 ransomware attack compromised the personal data of tens of thousands of employees.…
Oleg Evgenievich Nefedov, allegedly one of the founders of Black Basta, was also placed on Europol’s and Interpol’s Most Wanted lists