Online Nuisance is a term used to describe someone who uses the internet to cause disruption or annoyance. Spam is one of the most common forms of online nuisance, which involves sending unsolicited emails or messages to large numbers of people. Other forms of online nuisance include trolling, cyberbullying, and posting false or misleading information. All of these activities can have serious consequences for the victims, including emotional distress, financial loss, and even physical harm.