The way that Lastpass and Bitwarden (which seems to have followed most of the security architecture of LP) is designed, it makes it very resistant to attacks.

The way that Lastpass and Bitwarden (which seems to have followed most of the security architecture of LP) is designed, it makes it very resistant to attacks. The passwords and all data are encrypted on the client side and the server has no way to decode your passwords so even if Bitwarden's password was stolen, the passwords within the accounts are as secure as the Master password you chose. Also the fact that the server side is fully open-source (and not just the client) means you could switch to using your own servers at any time.