Software like GnuPG or Kleopatra can import these files to see if they match any keys you own.
It looks harmless, but in the world of digital security, a filename like that is a massive neon sign. Is it a list of forgotten Bitcoin private keys? A set of PGP encrypted messages? Or something more sinister? π What is typically inside?
Usually, a file named mail Crypto.txt contains one of three things:
If this is your file, here is a pro-tip:
Never upload the contents to a "Free Decryption" website. If those are private keys, the website owner now owns your money.
