Not every company that needs senior security leadership can justify — or attract — a full-time Chief Information Security Officer. That gap is exactly what a virtual CISO is built for.
A vCISO does the job a CISO would do: setting security strategy, owning the risk register, representing security to the board and to customers during due diligence, and coordinating with whatever IT or engineering team already exists. The difference is time — a few days a month instead of five days a week, at a fraction of the cost of a full-time hire.
It tends to make the most sense for companies moving fast: preparing for a compliance audit, going through a funding round where investors expect a real security story, or simply reaching the size where “security is everyone’s part-time job” stops working but a full-time leader still isn’t justified.
It’s not the right fit forever. Once a company’s security function reaches a certain size and complexity, having a full-time, embedded leader usually outperforms a part-time one. Think of a vCISO as the bridge to that point, not a permanent substitute for it.