According to NIST 800-61 r2, Incident response teams can
also use all the above staffing model :
- Employees: The organization performs all of
its incident response work, with limited technical and
administrative support from contractors.
- Partially Outsourced: The organization
outsources portions of its incident response work. . Although
incident response duties can be divided among the organization and
one or more outsourcers in many ways, a few arrangements have
become commonplace: – The most prevalent arrangement is for the
organization to outsource 24-hour-a-day, 7-day-a-week (24/7)
monitoring of intrusion detection sensors, firewalls, and other
security devices to an offsite managed security services provider
(MSSP). The MSSP identifies and analyzes suspicious activity and
reports each detected incident to the organization’s incident
response team. Some organizations perform basic incident response
work in-house and call on contractors to assist with handling
incidents, particularly those that are more serious or
widespread.
- Fully Outsourced: The organization completely
outsources its incident response work, typically to an onsite
contractor. This model is most likely to be used when the
organization needs a full-time, onsite incident response team but
does not have enough available, qualified employees.