FICO's FY2008 Form 10-K states Falcon Fraud Manager was used in approximately 65% of all credit card transactions worldwide

ficofalconfraud-detectionsec-filingsourcingverificationhnc

Fair Isaac Corporation's Form 10-K for the fiscal year ended September 30, 2008 states, in the "Fraud Strategy Machine Solutions" section of Item 1 (Business), that Falcon Fraud Manager — the direct commercial descendant of HNC Software's 1992 Falcon system — "protects hundreds of millions of credit and debit card accounts and is used in approximately 65% of all credit card transactions worldwide." 65% is a majority with room to spare, and the filing is Fair Isaac's own SEC-certified regulatory disclosure — a Tier 1 primary source.

This is the earliest Tier 1 confirmation located of the substance behind the vault's previously Tier-3-only headline reach statistic, but it is not verbatim the same claim as the one carried in claim-hnc-falcon-fraud-manager-became-fico-infrastructure ("a majority of both the credit and debit card transactions in the world"), which combines both card types into a single number. This 2008 filing states 65% for credit card transactions specifically; debit card accounts are mentioned in the same sentence but are not given their own percentage. The two claims point at the same underlying scale but are not interchangeable — this note confirms the order of magnitude and clears the sourcing floor for a "majority" claim, without verbatim-verifying the combined credit-plus-debit framing.

A conflation hazard sits one page earlier in the same filing. Describing a different product — the TRIAD adaptive control system, not Falcon — the same Item 1 states that Fair Isaac's adaptive control systems "are used by more than 250 issuers worldwide to manage approximately 65% of the world's credit card accounts" (p. 5). Two distinct 65% figures therefore appear within a page of each other, attached to different products and different denominators: Falcon at 65% of credit card transactions (p. 6), TRIAD at 65% of credit card accounts (p. 5). Any later "roughly two-thirds" claim about FICO's reach has two possible ancestors in this document, and the sources that repeat the figure do not distinguish them — see claim-fico-two-thirds-figure-denominator-drifts-across-restatements.

This substantially resolves question-verify-fico-neural-majority-card-transactions now that a Tier 1 primary exists. The denominator inconsistency across FICO's own restatements over time is tracked separately in claim-fico-two-thirds-figure-denominator-drifts-across-restatements, and the sourcing pattern behind the figure as a whole — self-reported, uncorroborated — in claim-fico-transaction-share-figure-is-self-reported-no-independent-audit.