Should these terms be one word or two?

Corporate communicators can become easily distracted by style and usage issues.

For example, when someone asks a usage question, I can’t let it go until I find out the answer.

This week’s distraction was the term “cyber security.” A co-worker was insisting that the term was now one word, “cybersecurity.” And indeed, I confirmed this with several dictionaries and in the AP Stylebook. “Cyber” is now considered an accepted prefix. So “cybersecurity” — like “cyberspace” or “cyberbullying” — is one word.