Jonathan Kamens on Nostr: npub1mmfwx…4eknq If you're just asking what it stands for, it's "INFOrmation ...

npub1mmfwxp0jkw6un7hf75k0p8kpemm4smau2c4m8ea2w7r7v52lhjusx4eknq (npub1mmf…eknq) If you're just asking what it stands for, it's "INFOrmation SECurity". If you're asking more than that, the short answer is that it's a huge field encompassing everything involved in protecting computers and the data on them from loss, theft, and tampering.
Technically the field also includes protecting data stored offline (e.g., in file cabinets), but that's not talked much about nowadays.