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Glossary › The 4 Cs of online safety

What are the 4 Cs of online safety?

The four areas of online risk in KCSIE: content (harmful material), contact (harmful interaction with others), conduct (behaviour that causes or risks harm) and commerce (gambling, advertising, phishing and scams).

Updated in KCSIE 2026

Checked against the official guidance on . Sources

KCSIE 2026 paragraph 165 groups online safety risks into four areas:

  • Content: being exposed to illegal, inappropriate or harmful material, such as pornography, racism, misogyny, self-harm and suicide content, radicalisation, extreme violence, misinformation and conspiracy theories.
  • Contact: harmful interaction with other users, or with generative AI tools that simulate it. This includes peer pressure and adults posing as children to groom or exploit.
  • Conduct: online behaviour that causes harm or makes it more likely, such as making, sending and receiving explicit images (including AI-generated ones) and online bullying.
  • Commerce: online gambling, inappropriate advertising, phishing and financial scams.

KCSIE 2026 updated these definitions (Annex C). The 2026 wording mentions generative AI under both contact and conduct.

You may see the "3 Cs" (content, contact and conduct) in older material. KCSIE uses four.

Paragraph 166 asks governors to make online safety a running theme across the school's safeguarding approach: in policies, the curriculum, staff training, the DSL's role and work with parents. The DSL takes lead responsibility for safeguarding, including online safety. Filtering and monitoring is one part of the response, and so is teaching pupils how to stay safe.

In the official guidance

  1. Keeping children safe in education 2026, Part two, paragraphs 164 to 166, and Annex C, Summary of changes (DfE, in force from 1 September 2026).

Last checked . This explains the official guidance in plain words. It isn’t legal advice, and your local safeguarding partnership’s procedures and your own policies also apply. If anything here is wrong or out of date, email support@pupilprotect.co.uk.