Restoring data after encryption
Restoring data after an encryption attack can be a difficult task, but not always hopeless. Here are some important steps you can take to recover encrypted files:
1. Isolation and removal of the threat: the first thing to do is to isolate the computer from other systems and network resources to prevent further spread of the infection. Then you should delete all detected malicious programs.
2. Backup: If you had a good backup strategy before the attack or saved data on a cloud server or another physical medium (for example, an external hard drive), then it is best to use these backups for quick recovery.
3. Checking the availability of a key/decryption tool: check various online lists of free tools for working with specialized types of encryption (each malware group has its own special technique). Some community projects have also created a database of keys / tools for decrypting files after an encryption attack.
4. Consultation with professionals: if you have critical information that needs to be recovered and none of the above methods work, it is recommended to seek help from computer security specialists or digital forensics firms. They may have access to more advanced technologies and techniques to attempt to unlock data.
It is important to note that data recovery success may depend on the type of cipher used (for example, RSA or AES), availability of keys/decryption software, and other factors. Therefore, it is always best to prevent such attacks in advance by using up-to-date security systems and conscious online habits.