Many organizations regard internal risk assessments as a compliance check-box – something performed before an audit, thrown in a drawer, and not thought about until the next time. This will not shield you. An assessment assembles process that shows you where you truly are with your business enterprise security, and what the cost would be to overlook it.
The global average cost of a data breach climbed to $4.45 million in 2023, up 15% over three years (IBM Cost of a Data Breach Report 2023). That doesn’t cover the damage to your reputation or the partner relationships that vanish in the dark of the night.
Table of Contents
Start with your asset inventory
Before you start to evaluate risk, you must have a clear understanding of what needs to be secured. This involves creating a detailed inventory of all your assets – every server, endpoint, cloud service, third-party integration, and data repository that your organization uses. It’s not just about your IT infrastructure either, it’s also about the actual data: customer files, financial data, intellectual property, and any data that your contracts or regulations stipulate you must secure.
After you have an inventory, prioritize your assets. Not all assets pose the same risk. A client database has a different level of risk than an internal tool used by HR for scheduling. Rank your assets according to two criteria: the criticality of the data they contain and their importance to day-to-day operations. This ranking will determine your next steps.
Threat modeling that reflects reality
Threat modeling sounds technical, but the concept is straightforward – you’re asking “what could go wrong here, and how?” Do this systematically rather than brainstorming in a meeting room.
Map threats to each asset category. External threats include malicious actors, phishing campaigns, and supply chain compromises. Internal threats – sometimes called insider threats – include accidental data exposure from employees, misconfigured access controls, and the occasional deliberate misuse by someone with elevated system privileges. Human error consistently drives a significant share of security incidents, and most threat models underweight it.
Document the plausible attack paths for your highest-priority assets. You don’t need to find every possible scenario, just the ones that are realistic given your business model, your industry, and the size of your team.
Evaluate your current controls honestly
This is generally the part of the process that everybody hates. You aren’t just listing out the threats – you’re evaluating whether the controls you have in place would realistically mitigate those risks.
Conduct a gap analysis of some kind against a broadly accepted security framework. The NIST Cybersecurity Framework is a good one, and it’s broken into categories that correspond with the five functions of identify, protect, detect, respond, and recover. If your organization is working towards ISO certification or already governs security through an ISMS, mapping this part of the process to international standards will give your gap review some credibility and make it easier to defend your conclusions later. Also, using a detailed iso 27001 checklist will help ensure that you’re capturing all the basic categories of infosec controls that a qualified assessor would test you on.
Be as detailed as possible when you are documenting gaps. Saying “Access Control needs work” isn’t helpful. Stating “3 legacy systems have shared administrative accounts and no audit logs” is something you can act on.
Assign risk scores and set your threshold
Once you’ve done the threat models and your gap analysis, you need to assign a risk score to each vulnerability you’ve identified. The formula is simple: likelihood times impact. It’s the implementation that’s hard. A lot of people are extremely uncomfortable making this assessment. But remember, if you’re not going to give it a number, it’s going to get made by a less-informed, more panicked party.
Remember to use a consistent scale of 1 to 5 or 1 to 10 for likelihood and impact, and apply it uniformly across every type of vulnerability you’re working with. This number cannot depend on which business unit is impacted by the vulnerability, because you care about the impact on the organization as a whole.
Your organization’s risk appetite is your threshold. Every business accepts some level of risk because eliminating all of it isn’t possible or economically rational. What are we prepared to treat as an emergency and what are we prepared to put on the backlog? You need to make this explicit. Be prepared, people will hate you for your inability to treat everything as an emergency. Be strong.
Build a remediation roadmap that people will actually follow
If you finish a risk assessment and stop there, you’re backsliding. The roadmap is the hard part, admittedly – but it’s also where the value gets delivered.
Start with high-impact, low-effort fixes. Enforcing multi-factor authentication across privileged accounts, closing unused access credentials for former employees, and patching known vulnerabilities in internet-facing systems are examples of work that significantly reduces exposure without requiring major infrastructure investment. Tackle these first.
Longer-term items – network segmentation, major system replacements, and full business continuity planning exercises – belong in the roadmap with realistic timelines, owners, and budget estimates. Those projects don’t happen overnight, but they should have a committed schedule.
Review the assessment on a set cadence, not only when something goes wrong. Threats shift, systems change, and staff turns over. An assessment that’s 18 months old may not reflect your current exposure at all.
The companies that treat this process with structural seriousness don’t just reduce their breach risk – they build the kind of documented security posture that opens doors with enterprise clients, partners, and regulators who increasingly ask to see the evidence.