Banking fraud is becoming harder to detect as criminals combine identity theft, payment manipulation and increasingly sophisticated digital attacks.

Banking fraud is no longer limited to stolen cards or compromised passwords. Criminals are exploiting legitimate customer accounts, manipulating authorised payments, creating synthetic identities and moving stolen funds through networks of mule accounts. As digital banking expands, these methods are becoming increasingly interconnected, creating new challenges for financial institutions.

According to ZIGRAM, a RegTech and financial crime technology provider, banks can no longer depend on checks at individual stages of the customer journey. Fraud can develop across multiple interactions, with each activity appearing legitimate when assessed in isolation.

The company defines banking fraud as deceptive or unauthorised activity involving financial institutions, customers, accounts, payments or services, carried out for financial gain. Perpetrators can include external criminals, organised networks, insiders and customers themselves.

Research from TransUnion also points to growing fraud risks within existing customer relationships, highlighting why institutions need to monitor activity beyond initial identity verification and account opening.

ZIGRAM identifies nine major categories of banking fraud, each exploiting different weaknesses across financial services. Account takeover occurs when criminals gain control of legitimate customer accounts through methods such as phishing, malware or SIM-related attacks. Once inside, they can access funds, change account details or initiate transactions.

Payment fraud covers unauthorised activity involving cards, bank transfers, Automated Clearing House (ACH) payments and instant payment systems. The Federal Reserve’s 2026 Risk Officer Report found that fraud challenges are increasing across these payment channels.

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