FiercePhish is an open-source phishing framework that allows companies to conduct free and easy internal phishing campaigns to increase user awareness and education. The main purpose of FiercePhish is to design campaigns, send emails, track response rate, and generate reports based on those responses.

The distinct mark is based on interplay of lightning bolt shape and email icon. The bolt aggressively cuts through the envelope diagonally, at the same time complementing the existing geometry. The opposite, zig-zag diagonal ends in an arrow as a hint to statistics retrieved from the phishing simulation process.