Matthew RosenquistFounder & CISO Advisor, Cybersecurity Insights · CISO, Cybersecurity Strategist, & Industry Advisor

The Fallacy of Perfect Cybersecurity

7 May 2025 · 1 min

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1:24

In this segment, the speaker challenges common misconceptions about cybersecurity, emphasizing that security is not a binary state of being either fully protected or completely vulnerable. Achieving absolute protection is technically infeasible and would be prohibitively expensive. Instead, effective cybersecurity programs aim to find an optimal balance among three key dimensions: acceptable risk, financial cost, and the friction imposed on users or customers. The speaker uses a car‑safety analogy—seat belts, airbags, and road markings—to illustrate how society routinely accepts certain risks while employing safeguards. The central claim is that striving for an impervious organization is a fallacy; realistic security requires reasonable trade‑offs and continuous risk management.

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There are dangerous misconceptions about the goals of cybersecurity. It's not binary, like turning on a switch to be impervious, but rather a range. To eliminate all impacts would be near impossible technically, and even if you could do it, it would be outlandishly expensive. The real goal of cybersecurity programs is to find an optimal level of security that balances This is trade-offs between what's acceptable risks, what are the costs, and the friction to end users or customers. We take risks every day when we get in our car. We have safety and security measures like seat belts and airbags and lines on the road, but we accept the risk even though there is a chance of harm. Cybersecurity is the same. It's about finding that right balance between those aspects of risk and cost and friction, just as we do when we get in the car. Cybersecurity is not about making an organization impervious. It's a fallacy. We have to be reasonable, and that's part of the challenge.