In an information security management
system (ISMS), based on Recommendation
When security is managed, it is necessary to evaluate the threat and mitigate either the equipment or the site. The threat is related to "vulnerability" and "confidentiality" in ISMS.
Recommendation ITU-T K.81 presents guidance on establishing the threat level presented by an intentional HPEM attack and the physical security measures that may be used to minimize this. The HPEM sources considered are those presented in IEC 61000-2-13, High-power electromagnetic (HPEM) environments – Radiated and conducted, as well as some additional sources that have emerged more recently.
This Recommendation also gives vulnerability of equipment. The equipment is assumed to meet the immunity requirements presented in Recommendation ITU-T K.48 and relevant resistibility requirements, such as Recommendations ITU-T K.20, ITU-T K.21 and ITU-T K.45.