If You Reuse Passwords, the Arceusulp 98 Leak Is a Red Flag

In July 2026, HEROIC's DarkHive threat intelligence platform detected one of the larger stealer log dumps in recent months: a file labeled "Arceusulp 98" uploaded to Telegram containing 22,196,248 compromised credential records. Each entry pairs an email address with a plaintext password and the URL where the login was harvested, making this a significant threat to anyone who reuses passwords across online services.

The Extreme Risk of 22 Million Plaintext Passwords

At over 22 million entries, this dump represents a massive volume of immediately exploitable credentials. Every password is stored in plaintext — no hashing, no encryption, no obfuscation. Attackers can load the entire dataset into automated tools and begin testing credentials against live services within minutes of obtaining the file. The sheer scale makes it statistically likely that many active accounts are compromised.

What Was Exposed

• Email Addresses — over 22 million accounts spanning personal and professional services
• Plaintext Passwords — each one fully readable and ready for immediate exploitation
• URLs — showing the exact websites and platforms where every credential was captured

Password Reuse Amplifies a 22-Million-Record Breach

When a dump this large hits circulation, credential stuffing campaigns follow immediately. Attackers systematically test stolen email-password pairs against email providers, financial institutions, streaming services, and cloud platforms. For anyone who reuses passwords, appearing in even one record of this 22-million-entry dataset could mean unauthorized access to every account sharing that same password.

Stealer Logs: The Malware-to-Marketplace Pipeline

Every record in the Arceusulp 98 dump was extracted by infostealer malware running silently on infected computers. These programs — variants like RedLine, Vidar, and Raccoon — infiltrate devices through phishing, malvertising, and software piracy. They vacuum up browser-stored passwords, session cookies, and autofill data, then relay everything to command-and-control servers. The aggregated logs are eventually compiled into massive datasets like this one and distributed freely or sold on underground channels.

Check If Your Credentials Were Exposed

HEROIC maintains one of the world's largest breach databases with over 400 billion compromised records indexed and growing. Use HEROIC's free breach scanner to search for your email address and find out whether your credentials appear in the Arceusulp 98 dump or any other known breach. With a leak this large, checking your exposure is not optional — it is essential.