Sydney, June 2: As many as one in six high school students experience underground or hush-hush bullying regularly, according to a new study.
Researchers also found that it is more damaging psychologically, socially and mentally than open bullying, and also has the capacity to inflict social isolation.
Secretive bullying refers to subtle forms of aggression such as spreading rumours, damaging text messages and personal attacks through networking sites like Facebook and MySpace.
The study, undertaken by Edith Cowan University (ECU), Australia involved more than 20,000 high school students.
Secretive bullying is likely to become more prevalent, due to the increasing use of information and communication technology.