Upon trying to log in to a Proton account, make sure to obfuscate incorrect login information. Currently, trying a correct email address and an incorrect password outputs the following error message.
 
"The password is not correct. Please try again with a different password."

But instead it should be, no matter what instances:

"The and account or password is not correct."

Helps to obfuscate an existing Proton account holder. Showing either the account or password is not correct if login attemp fails.

(this was observed in ProtonPass)