ransomware

noun

ran·​som·​ware ˈran(t)-səm-ˌwer 

: malware that requires the victim to pay a ransom to access encrypted files

In September of 2013, security for small accounting offices changed forever with the appearance of a new class of threats called ransomware. … you open a file attached to an innocent-looking e-mail, and the program encrypts key files and drives so they cannot be accessed. The files are locked until you pay a ransom.

—Dave Mcclure

With ransomware, a hacker slips into a system, then puts encryption controls in place that locks users out. The hackers then demand money to "unlock" the data.

—Elizabeth Millard

Today's ransomware scammers often demand payment in bitcoin because the digital currency is easy to use, fast and provides a heightened anonymity for the scammers, according to the FBI warning.

—Susan Tompor

Examples of ransomware in a Sentence

Recent Examples on the Web

Next-Gen Anti-Ransomware Protection—Preemptive And Resilient Security Despite AV and EDR advancements, modern ransomware tactics—including encryption bypass and stealthy execution—continue to exploit gaps in endpoint defenses. —Bob Kruse, Forbes.com, 29 Apr. 2025

This technique was notably used in the Medusa ransomware attacks, which targeted critical infrastructure and prompted an FBI cybersecurity advisory (AA25-071A) earlier in 2025. —Kurt Knutsson, FOXNews.com, 28 Apr. 2025

The rise in ransomware complaints was concerning, the FBI said, given several high-profile international law enforcement operations targeting ransomware operators and cybercrime forums in 2024. —Thao Nguyen, USA Today, 24 Apr. 2025

While most losses were caused by fraud, ransomware prevailed as the largest threat to critical infrastructure in 2024, the FBI said. —Nicole Brown Chau, CBS News, 23 Apr. 2025

Word History

First Known Use

2005, in the meaning defined above

Rhymes for ransomware

• aftercare
• anywhere
• billionaire
• chinaware
• debonair
• dinnerware
• disrepair
• doctrinaire
• earthenware
• everywhere
• frigidaire
• kitchenware