Bharti AXA INSURANCE GLOSSARY Ransomware A ransomware is a malware (malicious software) that blocks access to, locks or takes control of another software system till a ransom is paid to regain access. While a simple form of ransomware may just lock the system and can be undone by an expert, more advanced ransomware may employ cryptoviral extortion techniques that require decryption using a passkey that only the hacker knows. Some of the recent examples of ransomware include: The WannaCry ransomware is estimated to have infected about two lakh computers in May 2017. It exploited vulnerabilities in unpatched version of Windows operating systems. The Petya ransomware was discovered in 2016 and was spread through a hacked tax preparation program in Ukraine. The CryptoWall ransomware was spread in September 2014 through executable files disguised as image files. The attack was used to obtain passwords and steal Bitcoin wallets. The CryptoLocker ransomware infected 2,50,000 to 5,00,000 computers between September 2013 to May 2014. This was spread through a trojan hidden in a zip file. It has been observed that most ransomwares are spread through phishing emails, and employ social engineering to increase the click rate. Cybercriminals typically use publicly available personal information for social engineering. Request Call Back Category * - Select -CarTwo WheelerHealthTravelPersonal Accident Buy Renew Claim submit Related Posts Disclaimer : The information published on this website is for the public's reference only. Content of this information is to provide an overview of your Travel needs and should not be relied upon for personal, medical, legal or financial decisions and you should consult an appropriate professional for specific advice. Bharti AXA General Insurance Company Limited makes no representations about the suitability, reliability, timeliness, and accuracy of the information, travel, services, or any other items mentioned on this subject for any purpose whatsoever.