Monster Cloud Free 34: 25,582 Records — MC’s Largest Oct 6 Batch Completes the Quint

Monster Cloud Free 34: The Anchor of MC's Largest Oct 6 Sequence

Monster Cloud Free 34 is the most consequential single batch in MC's October 6, 2023 release cluster for two reasons: it carries the most records of any individual MC batch that day (25,582), and its confirmed date of October 6 extends the previously-identified Free 30-31-32-33 quad into a full quint -- Free 30-31-32-33-34. Collectively this five-batch sequence accounts for 81,095 records, more than any other consecutive grouping in MC's 21-batch Oct 6 portfolio. Free 34 was the last piece needed to resolve a gap in the sequence that had previously left its date unconfirmed.

Monster Cloud Free 34 (Oct 6, 2023): Stealer Log Summary

• Records Exposed: 25,582
• 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

Free 34 in the Quint: Why Consecutive Groupings Matter

Monster Cloud's 21 Oct 6 batches do not appear randomly distributed -- they cluster into identifiable consecutive sequences: the 4-5-6 trio (39,040 records), 9-10 pair (26,226), isolated 12 (10,475), 16-17-18-19 quad (50,871), isolated 21 (13,585), 23-24 pair (31,222), 26-27-28 trio (33,820), and the 30-31-32-33-34 quint (81,095). These groupings likely reflect how MC organized its upload sessions to Telegram -- batches within a sequence were probaly uploaded in rapid sucession, while gaps between sequences represent pauses or seperate upload events.

Free 34 vs. Other "Super-Large" MC Oct 6 Batches

Four Monster Cloud batches on October 6 exceeded 20,000 records -- a threshold that distinguishes them from the day's mid-size and smaller releases. Free 34 (25,582) now leads this group, followed by Free 23 (23,252), Free 33 (22,858), and Free 16 (21,307). These four super-large batches alone account for 92,999 records, or roughly 32.5% of MC's entire Oct 6 output. Free 34's status as both the largest single batch and the final piece of the quint makes it the capstone of MC's Oct 6 activity.

Monster Cloud's Role in the 660,000-Record Oct 6 Cluster

Monster Cloud's 286,334 records represent 43% of October 6's confirmed 660,000+ total. The remaining 57% -- 373,726 records from 20 independent operators -- includes Pubx's two-batch 160,572-record contribution, FortunaPrivate 3's 55,009, and Usmancloud 733logs' 20,522, among others. October 6, 2023 surpases October 7's 462,187 by nearly 200,000 records, making it the undisputed largest single-day credential exposure event in HEROIC's dataset.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches across more than 400 billion exposed records. If your credentials were part of Monster Cloud's Oct 6 cluster -- or any of the 20 other operator releases from that day -- you'll find out immediately. Run a free scan at HEROIC's breach scanner.