How do you prevent account takeover?

Account takeover prevention takes two layers, because an attacker holding the right password and code walks straight through the first. Bot detection, rate limiting, and passcodes screen the sign-in. The second layer re-verifies the person before any change that would hand the account to someone else or send its money somewhere new. Fintech and wallet apps, marketplaces, and gig platforms that pay out earnings need that second layer most.

How does account takeover fraud happen?

Account takeovers often start with credentials stolen through phishing, malware, or credential stuffing, where bots replay passwords leaked from other sites. Attackers also hijack phone numbers through SIM swaps, or call a help desk posing as the owner. The FBI's November 25, 2025 alert (I-112525-PSA) describes criminals posing as financial institution support staff to collect login credentials and MFA codes. They then reset the password to lock the owner out, which is why the reset needs its own check.

What are the signs of account takeover?

The signs of account takeover start at sign-in, with a login from a new device or location or a burst of failed attempts. Inside the account, watch for quiet edits to where alerts and money go: a new email or phone number, notifications switched off, a bank account added soon after. Any one sign can be innocent, such as a user traveling, so treat each as a reason to re-verify the person before the edit takes effect.

Does multi-factor authentication prevent account takeover?

Multi-factor authentication (MFA) stops the account takeovers that rely on a stolen password alone. A code sent by text or email can still be phished or read aloud to an impostor on the phone, and a SIM swap can redirect a texted code. Keep the passcode at sign-in. Before anyone changes how the account is reached or paid, ask for a selfie, since a face can't be read out over the phone.

What is step-up authentication?

Step-up authentication asks for a stronger check only when a user tries something sensitive, so routine logins stay fast. A one-time passcode shows the user controls a new phone or inbox, and a selfie re-verification checks the account holder is the one asking. KBA (Knowledge Based Authentication) can cover US users who can't take a selfie. Keep it as the fallback, though, because its questions draw on record details, such as past addresses, that an attacker may also find.

How do you stop help desk social engineering in account recovery?

Help desk recovery holds up against social engineering when the agent asks for the same proof your app would, because otherwise a convincing caller can talk an agent into a password reset. Before making the change, the agent can send the caller a ReAuthenticate™ selfie link, checked against the identity verified at signup. Hold the reset until the selfie matches, or until your team has reviewed the photo ID ReAuthenticate™ asks for on a mismatch.

How much does account takeover prevention cost with Authenticate?

Your cost on Authenticate starts with one paid government ID check per user, including users already on your platform whom another vendor verified. Liveness & Face Match is included with it. Every ReAuthenticate™ selfie re-check after that is free, so protecting more of an account's sensitive changes adds no per-check cost. Phone and email passcodes and Risk Insights are free too, KBA and Risk Score are paid, and there is no contract or minimum.