Monster Cloud Free 25 Stealer Log Breach: 8,788 US Records

Free 25 Confirmed: Monster Cloud's Twelve-Batch Dodecad Takes Shape

The confirmation of Monster Cloud Free 25 as an October 6, 2023 release settled what had been an open question in the MC batch sequence: whether the Free 23-28 sextet and Free 30-34 quint were seperate structures or part of a single consecutive run. With Free 25 (8,788 records), Free 29, and the intervening batches all confirmed as Oct 6 releases, the picture is now clear -- batches 23 through 34 form an unbroken 12-batch dodecad totaling 165,165 records, the largest consecutive grouping in MC's entire October 6 dataset.

Monster Cloud Free 25 (October 2023): Stealer Log Summary

• Records Exposed: 8,788
• 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

Inside the Free 23-34 Dodecad: Structure and Scale

The Free 23-34 dodecad isn't uniform -- batch sizes range from Free 24's 7,970 records to Free 34's 25,582, with five batches exceeding 20,000 records each. Free 25 sits near the lower end at 8,788, but its presense in the sequence is structurally significant: it occupies the third slot in the dodecad and represents part of the foundational layer of the run. The distribution of batch sizes within this group suggests Monster Cloud may have been aggregating logs from multiple collection sources simultaneously, with larger batches reflecting higher-yield endpoint clusters and smaller ones filling in from lower-density sources.

Freemium Distribution in the Stealer Log Marketplace

The "Free" designation in Monster Cloud's batch naming is not incidental -- it reflects a deliberate freemium distribution model common among Telegram-based infostealer operators. Free batches are promotional samples, released publicly to demonstrate the quality and volume of a channel's logs, attract subscribers, and build reputation within the infostealer comunity. Paid tiers typically offer fresher, more targeted logs with higher record counts. October 6 appears to have been a particularly active promotional day for MC, with 30 free batches released in what may represent a coordinated product launch or a response to competitor activity on the platform.

415,049 MC Records in One Day: The Broader Context

Monster Cloud's 30 confirmed Oct 6 batches contribute 415,049 records to that day's total, but they represent only roughly half the full picture. Independent operators on the same date -- including Fortuna Private (8 variants), RedlineLogsGroup, GODELESS CLOUD, Pubx, and Usmancloud, among others -- contributed an additional 438,000+ records, pushing the Oct 6 grand total past 853,000 exposed US stealer log credentials. Free 25's 8,788 records are one modest piece of a massive single-day credential event that remains, months later, one of the largest known concentrations of infostealer output from a single calendar date.

Check If Your Data Was Exposed

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