Hmm, we're afraid that's the problem with Primal, not with our nsec storing.

Unlike 1PW, our extension is open-source and it can be verified, that your keys do not leave the machine and aren't stored on our's (and not on clients') servers.

Alby extension does not only store your nsec, but it uses it to sign and encrypt nostr events - logging in, posting, sending messages, and all of the activity - and only then passing it on to the internet, for your security. 1PW does nothing of that type, it's a totally different tool.