Like a person fishing lures a fish with bait, a hacker lures their victims with the bait of information they would like or are curious about.
It is reported by Computerworld that the “F” is replaced with “PH” as a nod to Phone “phreaking” where the F was replaced with PH by people hacking phone systems in the early 1970’s.
When you are tempted to click on a suspicious link offering you “tasty” information, picture yourself with a hook in your mouth and your money or credentials gone!
Think before you click!
Additional Resources
https://www.computerworld.com/article/2575094/sidebar–the-origins-of-phishing.html