Malicious software that encrypts data and prevents access until a ransom is paid for the decryption key is known as ransomware. It can even threaten to reveal personal information.
The most prevalent and dangerous type of ransomware is encryption-based malware. With this kind, you can view your files and navigate the folders and apps on the device, but you are unable to open them. There will be a new file or message with a ransom note attached, and the file names have been changed.
Ransomware Working
There are seven steps involved in the attack process of ransomware. It sneaks inside a device without being detected at first. It then locates and scans the target files, encrypting them and preventing access. It then alerts the user of the attack and gives them payment instructions for the ransom. It then removes itself and leaves only the instructions for payment. After being directed to a website to pay the ransom, victims frequently use covert TOR services to communicate. Ultimately, victims may obtain a decryption key upon payment of the ransom, yet delivery is not guaranteed.
Ransomware Protection
· To prevent the infection from spreading further, disconnect your device from the internet and all other devices.
· Unplug every other device, including USBs and external hard drives. Unplug both your cable and wireless internet connections.
· Take a picture of the ransom note with your camera. This will help report the crime to the police and ensure you have a copy in case you run into any problems later.
· Use an anti-virus solution to remove the malware from your device like the Crypto Sheriff tool.
· Most ransomware varieties that encrypt files make a copy of your files, encrypt it, and then remove the original file. Using online recovery tools, you might be able to recover the deleted (unencrypted) files.
· Utilize a backup to restore your files. If you have a recent backup of your device then it is good, but make sure the backup files have not already been encrypted by ransomware.
· Reinstall the operating system to start over if there is nothing valuable on the device or if you have given up trying to recover your files. If the “Factory Reset” option is available, use it; if not, erase the disk and reinstall the OS.
· To fix known vulnerabilities, update operating systems, apps, and antivirus software regularly
· Employ intrusion prevention/intrusion detection systems (IPS/IDS), web application firewalls (WAF), and other security measures to stop ransomware.
In conclusion, ransomware poses a severe risk, specifically malware that uses encryption. It is essential to understand its attack procedure. Disconnecting from the internet, employing antivirus software, creating backups, and maintaining system updates are all part of the defense against it. To reduce its effects, awareness and preventative action are essential.