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ISO/IEC TR 27103

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ISO/IEC TR 27103:2018 — Information technology — Security techniques — Cybersecurity and ISO and IEC standards



“ISO/IEC TR 27103:2018 provides guidance on how to leverage existing standards in a cybersecurity framework.”
[Source: ISO/IEC TR 27103:2018]


If “cybersecurity” is simply that part of information security concerned with IT, then existing information risk and security standards are directly relevant to cyber risk and security.

An Information Security Management System as specified in ISO/IEC 27001 and other ISO27k standards is generally accepted as a comprehensive management system, governance framework or structure with which to manage information risks, including “cyber” risks pertaining to IT and the Internet.


Scope of the standard

Guidance on using existing ISO and IEC standards (not just ISO27k) in a ‘cybersecurity framework’.


Content of the standard

Using an arbitrary structure, the standard references relevant ISO and IEC standards down to the first-level subclauses (e.g. ISO/IEC 27001:2013 clause 9.3) where they are deemed relevant to various aspects of cybersecurity.



The standard was published in 2018 as a Technical Report.

Despite being confirmed unchanged by SC 27 in 2022 (!), the standard is now being updated to reflect ISO/IEC 27002:2022. The Design Specification for the update project is done. The standard is intended to explain how to manage cybersecurity risk in a comprehensive and structured manner drawing on processes, governance and controls from current ISO/IEC standards.


Personal notes

The project set out to develop an internal Standing Document for SC 27 explaining how ISO27k plus other ISO and IEC standards can usefully be applied to cybersecurity. Somehow, it ended up producing a Technical Report in the ISO27k series that failed to define “cybersecurity” and related terms such as “cyber risk”, “cybersecurity risk” and “cybersecurity framework”, as did ISO/IEC 27032.

Vague and indistinct terminology makes this standard distinctly unhelpful and problematic. It perpetuates and even accentuates the myth that ‘cyber’ means something different, new and special, for example stating that “Cybersecurity is a relatively new discipline”.  Relative to what - the abacus? Stone tablets? Balls and chains?

It seems to me ‘cyber’ is a hot potato that nobody is willing to grasp, a buzzword.

In revising this standard, ISO/IEC JTC 1/SC 27 could:

  • Establish a consensus definition for ‘cyber’ and related terms, clarifying the differences from existing well-established terms such as information security (and, ideally, information risk), and defining the scope (e.g. is ‘cyber’ IT, systems, networks, technology, the Internet, external threats, a marketing term, something to do with war, or what?  We still don’t know);
  • Explain the fundamental principles for managing (identifying, assessing and treating) cyber risks, again clarifying any differences from conventional information risk management (personally, I’m not convinced there are any material differences);
  • Provide a strategic view on the extent to which existing ISO27k standards cover this area, identifying any weaknesses or gaps where additional guidance might be justified (which sounds like an internal SC 27 document to me).


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