Financial apps hold what fraudsters want most: money that moves. Their logins are stuffed with leaked passwords, their onboarding is fed synthetic identities, and their card flows are used to test stolen numbers. Each attack starts with automation before it becomes fraud.
What bots do to financial services
- Account takeover. Credential stuffing against web and app logins, then a quick transfer or a change of contact details.
- Fake account opening. Scripted applications with stolen or synthetic identities, for sign-up bonuses, mule accounts or credit.
- Card testing. Stolen cards checked against card-linking or small top-ups.
- Enumeration. Sign-up and password-reset forms used to learn which emails or phone numbers are customers.
Where a bot check fits
A bot check does not replace KYC, transaction monitoring or strong authentication. It goes in front of them, cheaply, so that automated sessions never reach the expensive checks and real customers meet less friction:
- Login: answer
bot_highas a wrong password; step upbotto a passkey or a one-time code. More in credential stuffing at the login. - Account opening: refuse
bot_highbefore you pay for identity verification; reviewbot. - Password reset and contact changes: a second factor for
bot, and the same answer whether the account exists or not. - Adding a card: refuse
bot_high; 3-D Secure forbot.
The step_up flag in each answer marks the uncommon case of strong evidence on both sides: that is when to ask for the strongest proof, never a CAPTCHA.