Good morning my (fellow beautiful) Nostriches!

Semi-technical question about the Nostr protocol. What's the best course of action for a user whose Nostr private key/mnemonic phrase has been compromised/stolen (e.g. via browser exploit, clipboard/keylogger, etc.)? Back up their original profile and follows, move them to a new account, and delete original account? What's the best practice? Thanks in advance.

Hello world! #newbie here. Oscillating between using iris.to and snort.social. Having some problem storing my LN address (lacybag01@walletofsatoshi.com) using the latter, the former provides no option for storing the address. Any help will be appreciated.