Name: Y2K Joke Category: Joke Program Advice: Keep Risk: Low Risk Low risk threats pose a very low risk or no immediate danger to your computer or your privacy, however these types of applications may profile user online habits, but only according to specific privacy policies stated in the applications End-User License. These types of threats generally borderline on being a threat to being a standard application that has a complex license agreement that you knowingly installed. Description: Harmless entertainment software. How to close Y2K Joke: Wait until it has completed the Y2K test, then click on the Close button. Signatures: process: y2k.exe: MD5 Hash: d17aca3af7585ae76a9.. Type: Joke Program - A joke program is a program that will typically fake the actions of a virus but will cause no harm at all to a user's computer.