noun
hacker
Refers to a person skilled in computer programming and security, often with a connotation of exploring or circumventing systems. In Japanese, it can carry both positive (skilled programmer) and negative (cracker) nuances depending on context.
彼は優秀なハッカーとして知られている。
He is known as an excellent hacker.
そのハッカーは
The hacker broke into the company's server.