Can you change a file's CRC?

Yes, you can change a file's CRC (Cyclic Redundancy Check) by modifying the file's contents. The CRC is a checksum that is calculated based on the file's data, so any alteration to the file, such as adding or removing bytes, will result in a different CRC value. However, it's important to note that intentionally altering a file's CRC to deceive or manipulate data integrity is unethical and often illegal.