antiphishing

As a noun phishing

is (computing) the act of sending email that falsely claims to be from a legitimate organization this is usually combined with a threat or request for information: for example, that an account will close, a balance is due, or information is missing from an account the email will ask the recipient to supply confidential information, such as bank account details, pins or passwords; these details are then used by the owners of the website to conduct fraud.

As a verb phishing

is .

As an adjective antiphishing is

opposing or countering phishing.