Complex sentence: Cyber hygiene is the establishment and maintenance of an individual's the daily routines, occasional checks and general behaviours required to maintain a user's online "health" (security).
Split into simpler sentences: Cyber hygiene is the establishment and maintenance of an individual's online safety. It is the online analogue of personal hygiene, and encapsulate the daily routines, occasional checks and general behaviours required to maintain a user's online "health" (security).