Zero-Touch Networks (ZTNs) represent a state-of-the-art paradigm shift
towards fully automated and intelligent network management, enabling the
automation and intelligence required to manage the complexity, scale,
and dynamic nature of next-generation (6G) networks. ZTNs leverage
Artificial Intelligence (AI) and Machine Learning (ML) to enhance
operational efficiency, support intelligent decision-making, and ensure
effective resource allocation. However, the implementation of ZTNs is
subject to security challenges that need to be resolved to achieve their
full potential. In particular, two critical challenges arise: the need
for human expertise in developing AI/ML-based security mechanisms, and
the threat of adversarial attacks targeting AI/ML models. In this survey
paper, we provide a comprehensive review of current security issues in
ZTNs, emphasizing the need for advanced AI/ML-based security mechanisms
that require minimal human intervention and protect AI/ML models
themselves. Furthermore, we explore the potential of Automated ML
(AutoML) technologies in developing robust security solutions for ZTNs.
Through case studies, we illustrate practical approaches to securing
ZTNs against both conventional and AI/ML-specific threats, including the
development of autonomous intrusion detection systems and strategies to
combat Adversarial ML (AML) attacks. The paper concludes with a
discussion of the future research directions for the development of ZTN
security approaches. Abstract content goes here