Microsoft Edge loads your passwords into memory in plaintext, but Microsoft says not to worry
(www.windowscentral.com)
Safety and security are foundational to Microsoft Edge. Access to browser data as described in the reported scenario would require the device to already be compromised. Design choices in this area involve balancing performance, usability, and security, and we continue to review it against evolving threats.
"We value user safety and usability, but if you're already compromised you can go fuck yourself"