Topstep LLC
ent_9dc308a48c21756cc40277bc
Disclosures
6
State AG · 3 jurisdictions
Multi-filing incidents
1
incidents joining 2+ filings here
Max affected reported
1,920
nationwide · State AG TX
Leak-site claims
0
none in sample
Identity resolution
- Canonical name
- Topstep LLC
- Normalized
- topstep— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- topstep.com
Disclosure history (6)newest first
- Nebraska State AGas victim2026-01-15
Account takeover noticeCustomers notified of unauthorized access to their accounts.
- Massachusetts State AGas victim2025-12-30
Topstep LLC reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-12-30. 17 Massachusetts residents were affected.
- Nebraska State AGas victim2025-12-30
Topstep LLC notified Nebraska residents of a data security incident detected on September 8, 2025, involving a DDoS attack that may have led to unauthorized access to customer accounts. The company discovered on December 3, 2025, that PII was potentially accessed between September 8 and October 16, 2025. Topstep engaged external cybersecurity professionals and is offering complimentary credit monitoring and fraud assistance via Cyberscout (TransUnion).
- Texas State AGas victim2025-12-22
Topstep LLC based in Chicago, Illinois, a other entity reported a data breach to the Texas Attorney General. The breach was discovered on 2025-12-05 and reported on 2025-12-22. 222 Texas residents were affected. 1,920 individuals affected in total. Types of information involved: Name of individual;Address;Social Security Number Information;Other. Consumers were notified via U.S. Mail.
- Nebraska State AGas victim2025-12-22
Account takeover noticeCustomers notified of unauthorized access to their accounts.
- Massachusetts State AGas victim2025-12-22
Topstep LLC reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-12-22. 19 Massachusetts residents were affected.