Ransomware Home Cybersecurity Dictionary Ransomware Ransomware is a type of malicious software, or malware, that is designed to deny access to, or "lock," a computer system until a sum of money (ransom) is paid. It is often distributed as a trojan (malware disguised as a legitimate file) through phishing emails or links at an infected website. Once a system is infected, the ransom demand is typically displayed on the lock screen with directions on how to pay hundreds to thousands of dollars, with cryptocurrency often the preferred form of payment since it is untraceable. Unfortunately, paying the ransom does not always result in restored access to files or removal of the ransomware. Some of the most damaging recent examples of ransomware include WannaCry, Petya, and Locky. Related TermsFileless AttacksPhishingDDoS - Distributed Denial of ServiceAPT - Advanced Persistent ThreatsSQLi - SQL InjectionInsider Threat Share: Seeking Clarity? View the Cybersecurity Dictionary for top terms searched by your peers. Back to the Dictionary RELATED INSIGHTS DOWNLOAD June 14, 2017 Rapid Evolution of Ransomware Tactics Learn how to keep pace with ransomware dealers and survive the ever-evolving ransomware threat. See Details Read more about Rapid Evolution of Ransomware Tactics DOWNLOAD May 16, 2017 Staying Ahead of Threats: Ransomware Learn how to mobilize your team to stay ahead of the next ransomware attack wave with Optiv’s four-step brief. See Details Read more about Staying Ahead of Threats: Ransomware BLOG May 17, 2017 Ransomware Kill Chain and Controls - Part 2: Once the Crying is Over, the Controls Must Kick In In the first part of the blog series, we alluded to the impending danger of ransomware campaigns. It appears the concerns were justified, given the si... See Details Read more about Ransomware Kill Chain and Controls - Part 2: Once the Crying is Over, the Controls Must Kick In How Can We Help? Let us know what you need, and we will have an Optiv professional contact you shortly.