Introduction to Ransomware and Definitions

Ransomware is a type of malicious software, or malware, designed to block access to a computer system until a sum of money is paid. A new ransomware subset is called crypto-ransomware, which encrypts certain file types on infected systems and forces users to pay a sum of money to obtain a decryption key.

It’s a significant problem that’s on the rise, and if infected, it should be combatted as soon as possible. There are many ransomware variants—here is a list of known variants and their extensions.  

Additional industry definitions of ransomware:
Digital Trends
Trend Micro

Ransomware articles and resources:
Symantec ISTR (Internet Security Threat Report) Volume 22, 2017
Experts Exchange user btan’s Ransomware FAQs
No More Ransom Project
History of ransomware graphic from f-secure
Dell secureworks cryptolocker report
Dell secureworks cryptowall report


User Education and What to Do if You’ve Been Encrypted