Library · Chargebacks · How to run this
Forter step-up rate is not step-up vs block mix
Divide step-up challenges by auth attempts in one Forter cut. That ratio is step-up %.
Pair: Step-up share on Chargebacks. Mix twin: step-up vs block. Identity twin: identity-challenge.
What you type
Step-up challenges — Forter step-up / 3DS-style challenges raised in the cut.
Auth attempts — Auth attempts in that same Forter cut.
Step-up % = step-up challenges ÷ auth attempts × 100. Fat step-up % usually means rule thresholds are hot — retune those rules; never invent a step-up chip.
What not to do
Skip inventing step-up %. Skip dumping identity challenges into step-up fields. Skip treating hard blocks as step-ups. Skip blending MIDs when one seat owns the challenge pile.
Related: Chargebacks, step-up vs block, identity-challenge, velocity-block.
Procedure
- Type step-up challenges and auth attempts.
- Read step-up %.
- Retune rules when step-up % is material.
Failure modes
- Inventing step-up %.
- Dumping identity challenges into step-up fields.
- Treating hard blocks as step-ups.
Worked example
None on this page yet. When one lands it will be a real case: what broke, the number, and what changed. Not a composite.
Glossary
- Step-up share %
- Step-up challenges ÷ Auth attempts × 100.
Work with us — We run this job on your accounts. Services
FAQ
- Is this step-up vs block mix?
- Sibling Forter fork. [Step-up vs block mix](/manuals/forter-step-up-vs-block-mix) pits step-ups against hard blocks. This page is step-up challenges ÷ auth attempts.
- Is this identity-challenge share?
- Sibling Forter door. [Identity-challenge share](/manuals/forter-identity-challenge-share) is identity verifies. Here you only divide Forter step-up challenges by auth attempts.
- What step-up % should I invent?
- None. Pull step-up challenges and auth attempts from the same Forter cut.