ADJECTIVES COME AFTER NOUNS IN MEASUREMENTS AND AFTER INDEFINITE PRONOUNS
Cybercrime is a problem, and the people responsible / involved should be punished.
Social media sites are only about a decade old.
available, possible, concerned, responsible, involved, necessary, extra
Websites full of personal data can be targets for identity thieves.
THESE ADJECTIVES OFTEN COME AFTER NOUNS
There's nothing unusual about getting spam mail.
One action worth taking is changing your password regularly.
Anyone interested in protecting themselves from cybercrime should talk to an expert.
There are various antivirus programs available.
ADJECTIVES WITH COMPLEMENTS COME AFTER NOUNS
Look for the easiest solution possible.