How to recover my data attacked by ransomware dile extension became COPA?

One approach to recovering data if ransomware changes file extensions without available decryption tools is to try using data recovery software. These tools can sometimes help recover the original files, even if the file extensions have been changed. Additionally, you can check if there are any decryption tools released after the attack or seek assistance from cybersecurity professionals who may have insights on reversing the encryption. Remember to always keep backups of your important data to mitigate the impact of ransomware attacks in the future.