Help! Locked out of user account!

[sherships]

Hi,
When I start up the computer I get the following message: "This computer will restart to a secure, Safari-only system for the Guest user." I've logged into iCloud via another computer and find my mac is not turned on. Any ideas what's going on?

 

[SecuritySteve]

Check this thread out: https://apple.stackexchange.com/questions/19705/how-do-i-disable-safari-only-mode
It may be of help. I just checked on my mac (10.13.3 - High Sierra) and the option for the Safari-only system is no longer there.

As someone in the security industry, I laugh at the notion that Safari-only is secure by the way. That's probably the #1 attack vector that social engineers use, and that Zero-days target.