The MirageCloudLogs Breach Happened in 2025. The Data Just Went Public.

HEROIC analysts identified the MirageCloudLogs 747count stealer log file shared by a Telegram user in July 2025. This dump exposed 37,601 records containing email addresses, plaintext passwords, and URLs collected from compromised devices. The data represents credentials actively harvested from real users -- not old recycled leaks, but fresh infostealer output targeting live accounts.

Why This Is Dangerous

Stealer log data collected in 2025 is highly actionable. Attackers receive credentials that are likely still valid, paired with the exact URLs where those credentials were used. This gives them a targeted roadmap -- they know which banking sites, email providers, and cloud services to attack first. With plaintext passwords in hand, no brute-force effort is required.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (showing which services were compromised)

Why This Matters

Fresh stealer log data is among the most dangerous category of credential exposure. Because the data is recent, affected users are unlikely to have changed their passwords yet. Attackers exploit this window to conduct credential stuffing campaigns across email, banking, and corporate systems. Account takeover, identity theft, and unauthorized financial transactions are the most common outcomes.

How Stealer Logs Work

Infostealer malware is typically delivered through phishing campaigns, fake software downloads, or malicious browser extensions. Once installed on a device, it silently extracts saved passwords from browsers, captures session cookies, and logs keystrokes. The harvested data is packaged into log files and sold or distributed freely through Telegram channels and dark web marketplaces, often within hours of collection.

Check If You Are Affected

HEROIC's free breach scanner checks your email against more than 400 billion exposed records, including recent stealer log data like the MirageCloudLogs dump. Find out in seconds whether your credentials are already circulating among cybercriminals.