Classes of Intruders Activists are

A$.$ Are only individuals usually working as insiders like Snoowdon,

B$.$ Are either individuals, working as insiders, or members of a larger group of outsider attackers

C$.$ Are only a group of outsider attackers are motivated by social or political causes

D$.$ Are groups of hackers sponsored by governments to conduct espionage or sabotage activities

E$.$ hackers or crackers who are motivated by technical challenge or by peer$-$group esteem and reputation