Signon Error Discrepancy

Signon Error Discrepancy

Zoho Mail Team,
 
When there is a Signon Credential mismatch, I get the error message displayed but the password field is retained. I would suggest a Google Mail type behavior
 
--Reset the Password field so that the user can enter again
 
Additionally, when there is brute-force type attempts, throw a CAPTCHA to deter further attempts. The CAPTCHA should be getting lenghtier and difficult with further failed attempts.
 
Wouldn't these strenghten the fortress?
 
--Deepak