How do you turn on iPhone's new Impersonation Risk Detection in iOS 27 — and what does it actually do?

iOS 27 adds Impersonation Risk Detection, off by default, which lets supported apps check for signs of an active impersonation scam — a fake bank, agency or trusted caller pressuring you into a payment — and respond with extra verification, a delay or a warning. Here is how to switch it on and what it can and cannot do.

You are standing in the checkout line when your phone rings, and the voice on the other end sounds exactly like your bank, telling you to move your money right now “to protect it.” Short answer: iOS 27 adds a feature called Impersonation Risk Detection, and it is switched off by default. Turn it on, and supported apps on your iPhone can check for signs that someone is actively working a scam on you — posing as your bank, a government agency, or another person you trust — and respond before the money moves. Why it matters: this aims at the one kind of scam two-factor codes cannot stop, because you are the one approving the payment or account change.

Your iPhone analyzes information about your device and Apple Account for signs of an active scam, then hands the app only a risk level — Unknown (no evidence), Medium (some signs) or High (significant signs) — never the underlying information. The app decides what happens next, such as asking for extra verification, adding a delay, or showing a warning.1. Update to iOS 27 if you have not already.2.

Open Settings.3. Tap Privacy & Security.4. Tap Impersonation Risk Detection.5.

Toggle on “Share with App Developers.”6. If an app later warns you or adds a delay during a payment, treat that pause as the point — stop and verify before you go any further.Pro tip: Turning this on does not protect every app — it works only in supported apps, and Apple has not published a list of them. Never let a caller rush you past a warning.

Hang up, and call your bank on the number printed on your card.Ad’s take: Scams like this run on hurry, so a feature whose whole job is to slow you down for a few seconds is well worth one toggle. Turn it on tonight, before the call comes — not during it.