Make sure about the on the transaction redirection page is “https” or not.
Do not save your card detail on google chrome or any other browser.
Do not share otp or email verification to non-trustable people.
Avoid to use public wifi network and it might be still your all password.
Be sure, Before doing transaction activity, a better way to use private wifi or network.
After all the transaction processes completed, So try to delete all history from your browser.