because they are common targets for dictionary attacks. Academic work on keyboard pattern recognition
The search term is a sequence representing a repetitive typing of the rows on a standard QWERTY keyboard . It is often used by internet users to express extreme boredom , test keyboard layouts, or as a "placeholder" string when no other words come to mind. The Anatomy of the Sequence zzxxccvvbbnnmm qqwweerrttyyuuiioopp aassddffgghhjjkkll upd
While there is no formal academic paper titled exactly with that string of characters, the text sequence "zzxxccvvbbnnmm" "qqwweerrttyyuuiioopp" "aassddffgghhjjkkll" is a well-known cultural phenomenon often referred to as "Keyboard Row Typing." because they are common targets for dictionary attacks