  The increased importance of cybersecurity in autonomous machinery is becoming
evident in the forestry domain. Forestry worksites are becoming more complex
with the involvement of multiple systems and system of systems. Hence, there is
a need to investigate how to address cybersecurity challenges for autonomous
systems of systems in the forestry domain. Using a literature review and
adapting standards from similar domains, as well as collaborative sessions with
domain experts, we identify challenges towards CE-certified autonomous forestry
machines focusing on cybersecurity and safety. Furthermore, we discuss the
relationship between safety and cybersecurity risk assessment and their
relation to AI, highlighting the need for a holistic methodology for their
assurance.
