Clustered 7 filings across 1 jurisdiction · filing window Apr 30, 2015 → Sep 8, 2015. View entity profile → Other incidents for this victim →
incident inc_71cbd058d5ab46fc · merge_method deterministic · confidence 100%
Time between earliest and latest filing
Not recorded for this incident
Discovery variance · Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster; needs two dated filings.
PII · Identity (basic) · Financial account
CA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Dec 1, 2014
When the intrusion reportedly occurred, per the linked filings
American Express notified customers that a merchant where they used their card experienced unauthorized access to data files on December 1, 2014. Affected data included card account numbers, names, and expiration dates. Social Security numbers were not impacted. American Express placed additional fraud monitoring on affected cards and stated customers are not liable for fraudulent charges.
American Express notified customers that a third-party payment processor experienced unauthorized access to its system on November 2, 2014. Affected data may include name, American Express Card account number, and expiration date. Social Security numbers were not impacted. American Express placed additional fraud monitoring on affected cards.
American Express notified customers that a merchant where they used their card experienced unauthorized access to data files on January 20, 2015. Affected data included cancelled card account numbers, names, and expiration dates. Social Security numbers were not impacted. American Express placed additional fraud monitoring on affected accounts.
American Express notified customers that a third-party payment processor experienced unauthorized access to its system on February 1, 2015. Affected data may include name, American Express Card account number, and expiration date. Social Security numbers were not impacted. American Express placed additional fraud monitoring on affected cards.
American Express Travel Related Services Company, Inc. reported a data breach involving a third-party merchant. The merchant's data files were compromised, exposing American Express card account numbers, cardholder names, and expiration dates. Social Security numbers were not impacted, and no unauthorized activity was detected on card accounts. The company placed additional fraud monitoring on affected cards and notified cardholders via letter, advising them to review statements and credit reports.
American Express notified customers that a merchant where they used their card detected unauthorized access to its data files on December 30, 2014. The affected data included card account numbers, names, and expiration dates. Social Security numbers were not impacted. American Express placed additional fraud monitoring on affected cards and stated customers are not liable for fraudulent charges.
About this clustering
DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.
American Express (AXP) notified California residents that a merchant where they used their Amex card experienced unauthorized access to data files. The merchant's files included card account numbers, names, and expiration dates. SSN was not impacted. AXP placed additional fraud monitoring on affected cards and advised cardholders to review statements, sign up for alerts, and monitor credit reports.