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If someone hacks your password, you can change it - as many times as you want. You can't change your fingerprints. You have only ten of them. And you leave them on everything you touch; they are definitely not a secret.

But of course it's always gonna be Suicide, our fingerprints, ya know? You can't ever get rid of that.

Character isn't something you were born with and can't change, like your fingerprints. It's something you weren't born with and must take responsibility for forming.

The only secrets are the secrets that keep themselves.

Your genome isn't really secret.

I know that you can only keep a secret a secret for so long.

I don't have any secrets I need kept any more.

I am not very good at keeping secrets at all! If you want your secret kept do not tell me!

If you depend on a secret for your security, what do you do when the secret is discovered? If it is easy to change, like a cryptographic key, you do so. If it's hard to change, like a cryptographic system or an operating system, you're stuck. You will be vulnerable until you invest the time and money to design another system.