It’s a trivial matter for a rogue software to open files and rewrite their data. This changes the format, effectively locking-out the original software from being able to read it.

Learn how to open, read & analyze Mini/Small Memory Crash Dump (DMP) files in Windows 11/10. You can also use a Dump File Analyzer.

CSV files are most commonly encountered in spreadsheets and databases. You can use a CSV file to move data between programs that aren't ordinarily able to exchange data.