Liability shift
Auth & security
The reallocation of fraud-loss responsibility between issuer and merchant based on authentication or terminal capability. EMV liability shift moves counterfeit-fraud loss to whichever party (merchant or issuer) failed to support chip processing. 3DS liability shift moves CNP fraud loss from merchant to issuer when authentication is successfully completed.
In practice.
Liability shift means fraud chargebacks stop landing on you: after successful 3DS authentication, the issuer owns the fraud risk. It only covers fraud reason codes, so disputes about service or delivery still reach you. Merchants weigh the shift against conversion impact when tuning 3DS strategy.
Related terms: 3D Secure · EMV · Chip and PIN
Auth & security