https://www.axios.com/newsletters/axios-codebook-17f78023-b099-4a6b-b48b-843d28b87e32.html
A Ghidra is (perhaps coincidentally) a character in the Final Fantasy series of video games — an apparent mistranslation of the Japanese word for Hydra.
The logo on the NSA site for GHIDRA is a snake with a dragon's head forming an infinity symbol, turning its tail into binary code as it eats it. The binary spells out the first statement programmers traditionally learn how to display: "Hello world."