Monster Cloud Free 23: 23,252 US Stealer Log Credentials (Oct 6, 2023)

Monster Cloud Free 23: The Largest Single MC Batch in the Oct 6 Cluster

Monster Cloud Free 23, released October 6, 2023, contains 23,252 US stealer log credentials -- making it the largest single batch Monster Cloud released on Oct 6, narrowly edging out Free 33's 22,858 records. Together, Free 23 and Free 33 form the "super-large" tier of MC's Oct 6 operation, each exceeding 22,000 records while the remaining 17 batches range from 7,040 to 15,187. Free 23 also pairs with Free 24 (7,970) to form the Free 23-24 consecutive batch pair, contributing a combined 31,222 records. Free 23's size elevetes it to roughly 9.7% of MC's entire 239,445-record Oct 6 output on its own.

Monster Cloud Free 23 (October 2023): Stealer Log Summary

• Records Exposed: 23,252
• 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 Super-Large Tier: Free 23 and Free 33

Two of Monster Cloud's 19 confirmed Oct 6 batches qualify as "super-large" -- those exceeding 22,000 records: Free 23 (23,252) and Free 33 (22,858). Together they contribute 46,110 records, or 19.3% of MC's entire Oct 6 output. The existence of two super-large batches spaced throughout the Oct 6 release sequence (Free 23 is part of the 23-24 pair; Free 33 anchors the 30-31-32-33 quad) suggests MC may have deliberatley anchored its promotional campaign with high-volume flagship releases at strategically spaced intervals, ensuring sustained Telegram audience engagement across the day.

What 23,252 Credentials Means in Practice

At over 23,000 US plaintext credentials in a single release, Free 23 represents a significant pool for credential stuffing campaigns. Each record contains an email/password pair plus associated URLs revealing exactly which services the victom used. An attacker working through Free 23's full dataset -- at even a 1% success rate against new targets -- could gain unauthorized access to over 230 accounts from this batch alone. Free 23's credentials were publicly available via Telegram from the moment of release on October 6, 2023, with no technical barrier to exploitation.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches across more than 400 billion exposed records including Monster Cloud's 19 confirmed Oct 6 batches totaling 239,445 records. If your email was on any compromised US endpoint around October 2023, it may appear in Free 23 or one of the other 18 Oct 6 MC releases. Check at HEROIC's breach scanner now.