A person who, while a public employee is in the performance of public duty, prevents a computer used for that duty from operating in line with the purpose of its use or causes it to operate counter to the purpose of its use, by damaging such computer or any electronic or magnetic record used by such computer, by inputting false data or giving unauthorized commands to a computer used for that duty, or by any other means, is punished by imprisonment for 3 years or less or a fine of 500,000 yen or less.