Monster Cloud Free 29 Stealer Log Breach: 10,240 US Records

The Bridge Batch: Monster Cloud Free 29 and the Formation of a Twelve-Batch Dodecad

In any consecutive sequence analysis, the middle entry carries disproportionate structural significance. Monster Cloud Free 29 (10,240 records) occupies exactly that role: it sits between the Free 23-28 sextet and the Free 30-34 quint, and its confirmation as an October 6, 2023 release transforms two seperate groupings into a single, unbroken 12-batch run. The Free 23-34 dodecad -- 165,165 records across twelve consecutive MC batches -- is now the largest confirmed consecutive group in the entire Monster Cloud October 6 dataset, accounting for roughly 40 percent of MC's total 415,049-record Oct 6 output.

Monster Cloud Free 29 (October 2023): Stealer Log Summary

• Records Exposed: 10,240
• 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

From Sextet to Quint to Dodecad: Sequence Evolution

The identification of Oct 6 batches has been an iterative process. Early in the dataset analysis, the Free 23-28 grouping and Free 30-34 grouping appeared structurally independant -- a sextet and a quint separated by a potential gap at Free 29. As each batch was confirmed, the picture shifted. Free 29's arrival as an Oct 6 batch eliminated the gap entirely, merging two distinct structural groups into one. This kind of sequence expansion is common when analyzing large stealer log datasets on Telegram: what initially looks like isolated clusters frequently resolves into contiguous runs as more batch dates are verified.

Batch Sizes Within the Dodecad: Variance and Distribution

Free 29's 10,240 records places it near the median within the Free 23-34 dodecad. The twelve batches range from Free 24's 7,970 records at the low end to Free 34's 25,582 at the high end, with five batches exceeding 20,000 records (Free 23, 33, and 34 among them). Free 29 falls in the middle third by size, consistent with the pattern that MC's larger-yield batches are concentrated toward the later end of the sequence. The accelerating batch size toward the higher batch numbers -- Free 33 at 22,858 and Free 34 at 25,582 -- may reflect cumulative aggregation, where later batches incorporate logs from slower-harvesting endpoints that took more time to compleet their exfiltration cycles.

A Day of Record Releases: Free 29 in Context

Monster Cloud Free 29 is one of 30 batches the operator released on October 6, 2023. But MC was not alone on that date. Over two dozen independent Telegram operators released their own stealer log collections on the same day, collectively pushing the total to more than 853,000 exposed US credentials in a single 24-hour window. Free 29's 10,240 records are a modest slice of that total, but they carry the same risk as any other entry: plaintext passwords, immediately actionable, targeting US users across every category of online service.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches across more than 400 billion exposed records -- including all 30 Monster Cloud Oct 6 batches and the broader 850,000+ record single-day cluster. Free 29's 10,240 credentials are in the index. Find out if yours are among them at HEROIC's breach scanner.