Is cybersecurity one word or two?

Is it Cybersecurity or Cyber Security? How do you spell it?

February 16, 2021
Is cybersecurity spelled as one word or two? The answer is it depends...

How Dictionaries Spell Cybersecurity

The Cambridge dictionary spells it as one word “cybersecurity”. The Cambridge dictionary is from the United Kingdom.
The Merriam Webster dictionary spells it as one word “cybersecurity”. The Merriam Webster dictionary is a United States dictionary.

How Governments Spell Cybersecurity

How to spell cybersecurity NIST
The National Institute of Standards and Technology, a U.S. government organization spells cybersecurity as one word.
The United Kingdom National Cyber Security Centre spells cybersecurity as two separate words.
The Australian Cyber Security Centre (ACSC) spells cybersecurity as two separate words.
The Canadian Centre for Cyber Security spells cybersecurity as two separate words.
It looks like the U.S. government is the outlier among governments.

“Cybersecurity” or “Cyber Security” Which is More Popular?

How to spell cybersecurity
Using Google’s trend tool it is clear that spelling cybersecurity as two separate words is more popular. This applies worldwide, in the United States, and in the U.K. Based on observation, spelling cybersecurity as two separate words seems more popular.

Which Spelling is Correct? Cybersecurity or Cyber Security?

It depends. The Oxford and Merriam Webster dictionaries spell cybersecurity as one word. NIST spells it as one word, however other government organizations spell it as two separate words. Spell checkers generally don’t flag either method of spelling as incorrect. The only conclusion is that both spellings, cybersecurity and cyber security are correct.
 

Discover Our NIST SP 800-171 Solutions:

 /assets/images/compliance_accelerator_white.png

Compliance Accelerator

For contractors seeking compliance
 /assets/images/quantum_assessor_white.png

Quantum Assessor

For IT service providers
 /assets/images/supply_chain_logo_white.png

Supply Chain Verifier

For contractors seeking to verify partner compliance