A founder framed this as an either-or question recently: given a limited budget, is it better to spend it on cyber insurance, or on an actual security review of the app? I understand the instinct to compare them as two ways of managing the same risk. They're not really doing the same job, and treating them as substitutes misses what each one is actually for.
What cyber insurance actually covers
Cyber insurance is financial protection for after something has already gone wrong: the cost of notifying affected users, legal exposure, sometimes ransom payments, business interruption, and other costs tied to responding to an actual incident. It's genuinely valuable for managing the financial fallout of a bad day. It does nothing at all to prevent that day from happening in the first place.
What a security review actually does
A security review looks at your actual app, right now, and tries to find the gaps before anyone else does: missing access rules, exposed keys, unguarded admin routes. Its entire value is preventive. It doesn't help you clean up after an incident. It's aimed at reducing the odds one happens at all.
Why insurers themselves don't treat these as substitutes
Read an actual cyber insurance application closely and you'll usually find it asks pointed questions about your existing security practices: do you have basic access controls, do you patch known vulnerabilities, have you had any prior incidents. Insurers price their policies, and sometimes decline coverage entirely, based on the answers. A company with weak underlying practices often pays more for less coverage, or struggles to get covered at all, which is the insurance industry's own way of saying these two things aren't interchangeable. The policy assumes some baseline of prevention already exists underneath it.
What this means for a limited budget
If you have to sequence spending, prevention generally earns its cost first for an early-stage app, both because it reduces the odds you ever need the insurance payout, and because it can make the insurance itself cheaper or easier to obtain once you do pursue it. Insurance without any underlying security practice is closer to gambling that you can afford whatever a serious incident costs. A basic review without any financial backstop leaves you exposed to costs a good review can reduce the odds of, but never fully eliminate.
The version that actually makes sense
Both, in sequence, once budget allows: fix the basic, well-understood gaps first, since that work is relatively cheap and directly reduces your real risk. Add cyber insurance once you have real revenue and something meaningful to protect, understanding it as a financial backstop for the risk that remains even after decent practices are in place, not a replacement for having them.