For online spending, yes, for three reasons.

One card per merchant. Issue a separate card for each subscription or platform, and a leak at one exposes nothing else. You can close that single card without disturbing anything else you have set up.

Limited exposure. Each card holds only what you put on it. A bank card exposes the whole account behind it; a virtual card can lose at most its own balance.

You can stop it yourself. Freeze a card the instant something looks wrong, from your dashboard, without phoning anyone — and unfreeze it just as quickly if it turns out to be nothing.

Card numbers are never stored on our servers: when you reveal one it is rendered straight from the issuer's secure vault into your browser. We will never ask you for a card number, a security code or a one-time code.