4K (computer virus)
4k is a computer virus which infects COM files and EXE files. The virus was one of the first to employ stealth tactics. Infected systems will hang, after September 22 every year, which is also the date of birth Bilbo Baggins, a character from "The Lord of the Rings". The code was intended to display the message "Frodo Lives", but hangs in all known variants.
4K! – Fourth Republic!
The 4K! – Fourth Republic! (), often abbreviated 4K!, was a social-democratic political party in Hungary. It was led by András Istvánffy. It was formed at a Congress in April 2012, and its membership was largely drawn from a predecessor civil organization, also called 4K!.