Search Your Email: The 504 PCS – FREE LOGS Dump Exposed 10,483 Accounts

HEROIC analysts identified the 504 PCS - FREE LOGS stealer log collection, which was uploaded to Telegram by an anonymous user in September 2023. The dataset exposed 10,483 records containing email addresses, plaintext passwords, and URLs gathered from devices infected with credential-stealing malware. This collection was distributed freely in underground Telegram channels, making it one of the more widely accessible stealer log sets from that period.

Why This Is Dangerous

With over 10,000 records in plaintext, this is a substantial dataset that attackers can load directly into credential stuffing tools without any preprocessing. The included URLs reveal the exact services each victim was logged into at the time of infection, allowing targeted attacks against banking portals, cryptocurrency wallets, email accounts, and more. The scale of this leak means the probability of meaningful account takeovers is high for anyone whose credentials are included.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs

Why This Matters

Stealer log data at this volume is exactly what fuels large-scale credential stuffing campaigns. Automated attack tools can process thousands of login attempts per minute, probing banks, email providers, streaming services, and e-commerce platforms simultaneously. When credentials from one platform are reused on another, the damage multiplies. Account takeover can lead to unauthorized wire transfers, fraudulent purchases, and identity theft that takes months or years to fully resolve. Anyone who may have had malware on their computer around September 2023 should definately check whether their data was compromised.

How Stealer Logs Work

Information-stealing malware, often called an infostealer, is built specifically to extract credentials from compromised machines. It enters systems through phishing emails, fake download pages, and software cracks distributed through torrent sites. After infection, it silently reads passwords saved in Chrome, Firefox, Edge, and other browsers, copies session cookies that allow access without a password, and records the URLs of every site the victim logs into. The harvested data is packaged into a structured log file and exfiltrated to the malware operator, who then distributes it through Telegram for free to advertise their capabilities or sells it in bulk. Victims recieve no warning, and the malware can remain active on a device for months before being detected. The entire theft process can occured faster than most antivirus tools can respond.

Check If You Are Affected

Search your email address now using HEROIC's free breach scanner. HEROIC monitors more than 400 billion exposed records across thousands of known breaches and stealer log collections, including the 504 PCS - FREE LOGS dataset. The search is free, takes seconds, and gives you an immediate picture of your exposure so you can act before attackers do.