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

The most dire real-life cyberattacks on hospitals involve ransomware, a class of malicious software that encrypts data and locks down computers and networks, demanding significant amounts of cash for the promise of relief. —Jeffrey Tully, Fortune, 26 Mar. 2026

Kiesel, along with other councilmembers, are currently advised to not speak publicly about the ransomware attack. —Tim Fang, CBS News, 24 Mar. 2026

Never click unsolicited links — some install malware or ransomware on your device. —Jill Schlesinger, Mercury News, 23 Mar. 2026

ShinyHunters, the same ransomware gang that’s breached Grubhub, Google, and Pornhub, among others. —Alan Henry, PC Magazine, 20 Mar. 2026

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