The CISO (chief information security officer) is a senior-level executive responsible for developing and implementing an information security program, which includes procedures and policies designed to protect enterprise communications, systems and assets from both internal and external threats.
Incident response is an organized approach to addressing and managing the aftermath of a security breach or attack (also known as an incident). The goal is to handle the situation in a way that limits damage and reduces recovery time and costs. An incident response plan includes a policy that defines, in specific terms, what constitutes an incident and provides a step-by-step process that should be followed when an incident occurs.
Indicators of compromise are unusual activities on a system or network that imply the presence of a malicious actor.
Physical security is the protection of people and systems from damage or loss due to physical events such as fire, flood, disasters, crimes or accidents.