- They have few real friends, but talk extensively to online friends about computers
- They use the language of hacking, with terms such as "DdoS" (pronounced D-dos), Dossing, pwnd, Doxing, Bots, Botnets, Cracking, Hash (refers to a type of encryption rather than cannabis), Keylogger, Lulz, Phishing, Spoof or Spoofing. Members of the Anonymous Hacktivist group refer to their attacks as "Ops"
- They have multiple email addresses
- They refer to themselves and their friends as hackers or script kiddies
- They have an odd-sounding nickname (famous ones include MafiaBoy and CyberZeist)
- They can connect to the wifi of nearby houses (especially concerning if they have no legitimate reason to have the password)
- Some circumstantial evidence suggests children with autism and Asperger's could be more vulnerable to becoming hackers