Multi-Factor Authentication (MFA) is now available to all residents on their accounts. MFA is an additional step to prove your identity before gaining access to sensitive information or actions on your account. It provides an extra layer of security to supplement your username and password. Widely adopted by many products, MFA is an industry standard.
How does it work? You can learn more about MFA, find out what you’ll need to do, and activate it in the knowledge base article!
You will need to take action in order to activate MFA. It is entirely opt-in. Go to accounts.secondlife.com/mfa/status and get started!
On how it works, the Lab would go on to say, "MFA requires an authenticator app on your mobile device which generates secret codes (called “tokens”). When you log in, Second Life connects to the authenticator app to make sure the token you provide matches the one generated by the authenticator app." To turn it on, one would need to "Install an authenticator app on your mobile device. We do not supply this app or directly support any third party app, but we have tested Google Authenticator with this feature."
The blog post would remind people to change passwords on a regular basis, and state MFA would not effect how residents log into Second Life and MFA's protection was limited to the SL login. But in the future, it may be applied to other parts of Second Life such as the Marketplace.
As was stated, to get started, clich here: https://accounts.secondlife.com/mfa/status
To read the blog post in full, Click Here.