Hello,in my magento store sometimes in login form I see username and password of other users and I can login to their account.
This problem is not permanent and rarely it happens and I do not know when it happens.
My guess is the problem of cache or cookie.
I disabled cache for login form but this problem happened again.
Please help me how can I fix this problem?
I wager the login info is in your browser and not your website.
Check saved passwords. Delete cached cookies related to your site. Try again.
Hope that helps.