Bridging the Gap: Understanding the Interplay of Cybersecurity and Physical Security
In most organisations, physical security sits under facilities or operations, while cybersecurity sits under IT. They have different budgets, different reporting lines, and different risk frameworks. This separation made sense when the threats were also separate. It no longer does.
Where the boundary breaks down
Consider a few scenarios that are not hypothetical:
A server room with a strong door and a weak policy. Badge access required — but the list of who has a badge has not been reviewed in two years. Former contractors, people who changed roles, people who left the company: all still have access.
A clean desk policy with no enforcement. Passwords written on sticky notes, unlocked screens, visitor passes left on desks. A social engineering approach that gets an attacker into the building resolves the cyber challenge before it begins.
Network ports in public areas. Reception, meeting rooms, waiting areas — plugging in a device takes seconds. If the network is flat and the ports are live, physical access is network access.
The combined risk
The practical consequence is that a motivated attacker will find whichever path of least resistance exists. If the cyber controls are strong, they will look at physical access. If physical access is controlled, they will look at people — phishing, vishing, pretexting.
A security programme that optimises one channel while ignoring the others is not as secure as it appears on paper.
What an integrated review looks like
An integrated physical and cyber security review considers:
- How physical access translates into digital access (network topology, unlocked devices, visible credentials)
- How social engineering can bypass both sets of controls
- Where the documentation and policy gaps sit, independent of the technical controls
The goal is not to find every possible attack path — it is to understand the most likely ones, given your actual threat profile, and to close them in order of risk.