Welcome to ISMG's Ransomware Resource Center!

Ransomware has rapidly become one of the world's most prevalent types of cybercrime. The lure for criminals is easy to see: Using highly automated and easily distributed crypto-locking malware to forcibly encrypt systems, attackers can demand bitcoin ransoms in exchange for decryption keys. Use this Ransomware Resource Center for the latest details on emerging ransomware variants, threat intelligence on attackers, plus best practices for detection, response and remediation.

Ransomware by the Numbers: Count of Victims and Groups Surge

Mathew J. Schwartz • January 15, 2026

Here's unwelcome ransomware news: Groups' victim listings and underground chatter suggest that the count of victims and number of criminal groups behind such attacks have both risen over the past 12 months, despite repeat disruptions by law enforcement, fierce competition and fewer victims paying.

Blockchain & Cryptocurrency

Ransomware Victim Warning: The Streisand Effect May Apply

Latest

Access Management

JumpCloud Grows Presence in Brazil With MSP MacSolution Buy

Michael Novinson • January 8, 2026

JumpCloud has acquired MacSolution, a longtime partner and its largest MSP in the Americas, to enhance global service delivery and deepen its IT modernization capabilities. The move positions Sao Paulo, Brazil, as a strategic hub and strengthens support for partners and customers in Latin America.

Data Breach Notification

Aflac Notifies 22.7 Million People of June Data Theft Attack

Marianne Kolbasuk McGee • January 2, 2026

Supplemental health insurer Aflac is notifying 22.65 million people whose sensitive health and personal information, including Social Security numbers, was potentially compromised in a June data theft incident. The incident will likely rank as the biggest U.S. health data breach reported in 2025.

Encryption & Key Management

Why 47-Day TLS and SSL Certificate Renewal Cycles Alarm CIOs

Sandhya Michu • January 2, 2026

Moving to 47-day TLS and SSL certificate renewal cycles by 2029 will turn certificate management into an enterprise risk. "Automation and crypto-governance are now board-level imperatives. Enterprises can prepare for continuous renewal cycles without losing resilience," says Sectigo CEO Kevin Weiss.

Cybercrime

2025 in Health Data Breaches and Predictions for 2026

Marianne Kolbasuk McGee • December 30, 2025

If 2025 lacked a signature attack, hundreds of hospitals, health systems, clinics, physician practices, business associates and other vendors nonetheless experienced breaches in 2025 that cumulatively affected tens of millions of Americans. Hackers will try again harder in 2026.

Fraud Management & Cybercrime

Georgia Hospital Settles Lawsuit in Alleged Embargo Hack

Marianne Kolbasuk McGee • December 11, 2025

A small, rural county-owned Georgia community hospital has agreed to settle consolidated class action litigation involving a 2024 hacking incident in which ransomware gang Embargo claimed to have stolen 1.15 terabytes of the organization's data and leaked it on the darkweb.

Government

Senators Reintroduce Bill to Boost Healthcare Cybersecurity

Marianne Kolbasuk McGee • December 8, 2025

Four U.S. lawmakers - including the chair of the Senate health, education, labor and pensions committee - are taking another stab with a bipartisan bill aimed at strengthening cybersecurity in healthcare. That includes bolstering HIPAA, and providing cyber grants and training to the sector.

Scattered Lapsus$ Hunters Tied to Targeting of Zendesk Users

Akshaya Asokan • November 28, 2025

Continuing its targeting of customer data, the cybercrime group Scattered Lapsus$ Hunters appears to be gearing up for large-scale attacks involving typosquatted domains that lead to phishing domains designed to steal Zendesk users' valid credentials, warn security researchers.

Cybercrime

Ransomware Moves: Supply Chain Hits, Credential Harvesting

Mathew J. Schwartz • November 28, 2025

Ransomware groups continue to display more innovation, persistence and planning in their quest to amass ransom-paying victims and maximize profits. This has included repeat supply-chain attacks, harvesting credentials to use in later campaigns, as well as launching their own affiliate programs.

Blockchain & Cryptocurrency

Ransomware Reshaping Cyber as National Security Priority

Akshaya Asokan • November 27, 2025

Ongoing, high-profile ransomware attacks against Britain and the United States have transformed cybersecurity into a national security priority, Anne Neuberger, the former White House deputy national security adviser for cyber, said at a Wednesday event in London.

Cyber Insurance

Cyber Risk Redefines the Bottom Line for FIs

Anna Delaney • November 13, 2025

FIs face rising cyber complexity as threat actors evolve and insurers raise the bar. David Anderson, vice president of cyber at Woodruff Sawyer, a Gallagher company, explains how proactive defense, governance and privacy controls define the new economics of cyber risk.

Data Security

UK NHS Named in Clop Gang's Exploits of Oracle Zero-Days

Marianne Kolbasuk McGee • November 13, 2025

Ransomware gang Clop has claimed the United Kingdom's National Health Service among its latest victims. The NHS confirmed that it is listed on a cybercriminal group's dark website, but did not comment on Clop's claims. The hack attack appears tied to Oracle E-Business Suite exploits.

Government

Small County, Same Cyber Risks

Anna Delaney • November 12, 2025

Small counties across the U.S. continue to face cyber risks from foreign sources, relying on the limited tools and resources they have to defend their communities. Local governments are barely keeping pace with the sophisticated nature of modern cyberattacks.