What is Ransomware?
Ransomware is a malware-based cyberattack that threatens to hold business data hostage until payment is made. Attackers exploit vulnerabilities to access systems, encrypt files and blackmail victims with threats of regulatory leaks, partner disruptions or data destruction. Increasingly sophisticated attacks and factors like cryptocurrency anonymity, remote work expansions and reliance on legacy systems are fueling ransomware’s prevalence.
Typically, attackers use social engineering to trick victims into opening an attachment or clicking on a malicious link that installs malware to take system control. Attackers then alert users that their files have been encrypted and demand a ransom in cryptocurrency to unlock them. Using money earned from these attacks, attackers fund further development of the malware to increase its effectiveness.
Once compromised, the malware encrypts file types and displays a window to the victim with a timer that warns they must pay within a certain timeframe or the ransom increases. The ransomware may also attempt to spread to connected drives and machines. Quarantine the affected machine to limit its ability to spread. Create a backup of the affected files. The decryption process might damage or destroy them, so it’s important to keep them backed up in case a solution becomes available in the future.
Most experts recommend not paying the ransom, as it only perpetuates a profit model for attackers. Plus, most victims never receive the cipher keys to decrypt their files. But if you must pay, negotiate for a reasonable amount and make sure to document your incident to ensure compliance with cybersecurity disclosure laws.