What is Ransomware?
Ransomware is a type of malware that infects a computer and restricts users’ access to it before paying a ransom to open it. Redemption options have been around for many years and there have been frequent attempts to extort money from the victim by displaying a warning on the screen.
Typically, these codes indicate that user systems are locked or user files are encrypted. Customers are told that access cannot be restored without paying a ransom. Redemption costs vary greatly from person to person, but are often between $ 200 and $ 400 and must be paid in a virtual currency such as Bitcoin.
How does a computer become infected with Ransomware?
Ransomware is often spread through phishing emails containing malicious attachments or downloaded to a disk. Download management is performed when a user unknowingly visits an infected website and unknowingly downloads and installs malware.
Crypto ransomware, a malicious version of file encryption, is spread through similar methods and social media such as web instant messaging programs. Additionally, new ransomware infection methods have been observed. For example, vulnerable web servers are used as access points to access an organization’s network.
Why Ransomware is effective
Ransomware authors cause fear and panic among their victims, as a result of which they may click on a link or pay a ransom and infect user systems with additional malware. Ransomware displays malicious messages such as:
“Your computer is infected with a virus. Click here to fix the problem.”
“Your computer has been used to visit websites with illegal content. You will have to pay a $ 100 fine for unlocking your computer.”
“All the files on your computer are encrypted. You must pay the ransom within 72 hours to regain access to your data.”
How should Protect from Ransomware?
Infection can harm an individual or organization, and recovery can be a complex process that requires the services of a reputable data recovery expert.
US-CERT advises users and managers to take the following steps to protect their computer network payment software from infection:
- Use the data backup and recovery plan for all important information. Create and verify regular backups to minimize the effects of data or system loss and speed up the recovery process. Note that network-related backups can be changed on demand; For optimal protection, important backups should be isolated from the network.
- Update your operating system and software with the latest updates. Most attacks are vulnerable to programs and operating systems. Providing them with the latest updates will significantly reduce the number of access points used by an attacker.
- Save the latest antivirus software and scan any software downloaded from the Internet before you run it.
- Limit users’ ability to install and run unwanted software (all permissions) and apply the “minimum advantage” principle to all systems and services. Restricting these privileges may prevent malicious software from operating or restrict its ability to spread on the Internet.
- Avoid adding macros to email attachments. If the user opens the attachment and runs the macros, the built-in code will run malicious software on the device.
- Do not follow unnecessary web links. For more information, refer to the phishing resources available on this website.
- Individuals or organizations cannot pay because this does not guarantee that the files will be published. However, the FBI said that if there is a Crypto locker, Crypto wall or another complex payment program, the victim will not be able to return the data without payment.