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.
8K resolution
8K UHD has twice as many horizontal and twice as many vertical pixels as 4K UHD, as well as four times the linear resolution of 1080p (Full HD), and six times the linear resolution of 720p.