Phishing is a related term of phisher.

As nouns the difference between phisher and phishing

is that phisher is a person who engages in phishing while phishing is 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

present participle of lang=en.