Technical support personnel are those individuals within the organization who do not have CSIRT activities as part of their day-to-day operations, but rather have expertise or access to systems and processes that may be affected by an incident. For example, the CSIRT may need to engage a server administrator to assist the core team with acquiring evidence from servers such as memory captures, acquiring virtual systems, or offloading log files. Once completed, the server administrator's role is completed and they may have no further involvement in the incident. The following are some of the personnel that can be of assistance to the CSIRT during an incident:

• Network architect/administrator: Often, incidents involve the network infrastructure. This includes attacks on routers, switches, and other network hardware and software. The network architect or administrator is vital for insight into what is normal and abnormal behavior for these devices as well as identifying anomalous network traffic. In incidents where the network infrastructure is involved, these support personnel can assist with obtaining network evidence such as access logs or packet captures.
• Server administrator: Threat actors often target systems within the network where critical or sensitive data is stored. These high-value targets often include domain controllers, file servers, or database servers. Server administrators can aid in acquiring log files from these systems. If the server administrator(s) are also responsible for the maintenance of the active directory structure, they may be able to assist with identifying new user accounts or changes to existing user or administrator accounts.
• Application support: Web applications are a prime target for threat actors. Flaws in coding that allow attacks such as SQL injection or security misconfigurations are responsible for some security breaches. As a result, having application support personnel as part of the CSIRT facilitates the finding of information directly related to application attacks. These individuals will often be able to identify code changes or to confirm vulnerabilities discovered during an investigation into a potential attack against an application.
• Desktop support: Desktop support personnel are often involved in maintaining controls such as data loss prevention and anti-virus on desktop systems. In the event of an incident, they can assist in providing the CSIRT with log files and other evidence. They may also be responsible for cleaning up infected systems during the remediation phase of an incident.
• Help desk: Depending on the organization, help desk personnel are the proverbial canary in the coal mine when it comes to identifying an incident. They are often the first individuals contacted when a user experiences the first signs of a malware infection or other malicious activity. Thus, help desk personnel should be involved in the training of the CSIRT responses and their role in the incident identification and escalation procedures. They may also assist with identifying additional affected personnel in the event of a widespread incident.