The appropriate actions to take next are to investigate whether pest infestation is an identified risk and if so, what risk treatment is to be applied, to determine whether the high levels of rainfall have had other impacts on data centre operations, and to check with the guide that they intend to initiate the organisation's information security incident process. These actions are relevant to the ISMS audit objectives and criteria, as they relate to the organisation's risk assessment and treatment, security performance, and incident management processes.
The other actions are either not within the scope of the ISMS audit, not required by the ISO/IEC 27001 standard, or not the responsibility of the auditor. References: PECB Candidate Handbook1, page 21-22; ISO
/IEC 27001:2022 (en)2, clauses 6.1, 8.2, 9.1, and 10.2.