You can transfer your Mastodon account to another Mastodon server if you want to. There are complete step-by-step instructions here:

➡️ https://fedi.tips/transferring-your-mastodon-account-to-another-server

Transferring your account lets you take your followers, follows, bookmarks, lists, mutes and blocks along with you to the new server. Your existing followers will automatically follow your new account.

Your old posts will remain on the old server, but they will redirect people to your new account.

#FediTips #Mastodon

Transferring your Mastodon account to another server | Fedi.Tips – An Unofficial Guide to Mastodon and the Fediverse

An unofficial guide to using Mastodon and the Fediverse

@FediTips
This makes me feel a bit uneasy.
I know as an attacker you'd need correct credentials for it, but if you have them you could steal followers and there's no recourse (the new server just won't cooperate to transfer them back).
I'd hope such account actions trigger more authentication.
Disclaimer: I've only read the linked page and not spent much time looking into this.
@briankrebs

@domenpk @briankrebs

They would need to have access to your account to do this.

You can secure your account even more by using a good unique password and activating two-factor authentication:

https://fedi.tips/using-two-factor-authentication-2fa-on-mastodon/

Even if they had your password, they wouldn't be able to access your account as the 2FA would stop them.

Using Two Factor Authentication (2FA) on Mastodon | Fedi.Tips – An Unofficial Guide to Mastodon and the Fediverse

An unofficial guide to using Mastodon and the Fediverse