Fortuna Private: 14,264 US Credentials — Sixth Confirmed Fortuna Variant on Oct 6, 2023

Fortuna Private: The Sixth Confirmed Fortuna Variant on October 6, 2023

The "Fortuna Private" release -- with no number suffix -- is the sixth confirmed Fortuna-branded stealer log active on October 6, 2023, contributing 14,264 US credentials to the day's already extraordinary total. The Fortuna operator family's Oct 6 presence is remarkbaly broad: FortunaPrivate (2,839), FortunaPrivate1 (4,748), FortunaPrivate 3 (55,009), FortunaPrivate 265logs (3,174), Fortuna Private 867logs (15,262), and this unnamed batch (14,264) collectively account for over 95,000 credentials -- placing the Fortuna family third among Oct 6 operators by total volume, behind only Monster Cloud (404,809 records across 29 confirmed batches) and Pubx (160,572 across two batches).

Fortuna Private (Oct 6, 2023): Stealer Log Summary

• Records Exposed: 14,264
• Data Types: Email addresses, plaintext passwords, URLs
• Breach Type: Stealer log -- credentials harvested from malware-infected endpoints, not a direct database breach
• Password Type: Plaintext -- captured directly from browser sessions and credential stores by infostealer malware
• Country: United States
• Date Leaked: October 6, 2023

The Fortuna Naming Conventions: What They Reveal

The Fortuna family's naming variants -- "FortunaPrivate," "FortunaPrivate1," "FortunaPrivate 3," "FortunaPrivate 265logs," "Fortuna Private 867logs," and the un-suffixed "Fortuna Private" -- suggest either a single operator managing multiple release channels or a loose affiliation of operators sharing infrastructure or a brand. The inconsistency in naming format (some use "Private", some use "265logs" file-count notation, some use numbered suffixes) may indicate different team members or automated tools generating release names without a standerdized convention. The 867logs variant (15,262 records, 17.6/file) and the 265logs variant (3,174 records, 12.0/file) use file-count suffixes similar to Usmancloud and Klaus_cloud_public.

Fortuna's Oct 6 Dominance and the Day's Scale

With FortunaPrivate 3 (55,009 records) as its anchor, the Fortuna family's combined Oct 6 contribution of over 95,000 records makes it the largest non-Pubx, non-Monster Cloud operator of the day. The Oct 6 grand total, now incorporating Monster Cloud's 29 confirmed batches (404,809 records), the Fortuna family, Pubx, and a further dozen operators, exceeds 786,000 exposed US stealer log credentials -- surpasing October 7's entire confirmed total by more than 320,000 records.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches more than 400 billion records, including all six confirmed Fortuna variants from October 6, 2023. Find out if your credentials were exposed at HEROIC's breach scanner.