Someone Has Your Password: 2,325,306 ARCEUSULP 244 Credentials

HEROIC's continuous Dark Web monitoring identified a massive stealer log compilation labeled ARCEUSULP 244 being distributed on Telegram. This dataset contains 2,325,306 compromised credential records — one of the larger single-file dumps HEROIC has tracked. Each record contains an email address, a plaintext password, and the URL of the website where the credential was stolen by infostealer malware running on the victim's device.

2.3 Million Passwords With Zero Protection

Every one of the 2,325,306 passwords in this file is stored in plaintext. There are no hashes to crack, no encryption keys to break. Each credential is fully readable and immediately usable. At this scale, the impact is staggering — millions of people have their login details exposed in a format that requires no technical skill to exploit. The plaintext nature of this dump means the time between downloading the file and attempting account access is measured in seconds.

What Was Exposed

• Email Addresses — millions of accounts spanning personal, corporate, and educational domains
• Plaintext Passwords — credentials stored in their raw, original form without any cryptographic protection
• URLs — the specific login pages and services where each password was captured

The Scale of Credential Stuffing Risk

With over 2.3 million credential pairs, this dump provides fuel for large-scale credential stuffing campaigns. Attackers use botnets to test these combinations against every major service on the internet — email providers, banks, retail sites, streaming platforms, and corporate VPNs. Statistical analysis shows that password reuse rates hover around 60 percent, meaning potentially over a million additional accounts beyond those directly listed could be unlocked using these stolen credentials.

How 2.3 Million Credentials Were Stolen

The ARCEUSULP 244 log is the product of thousands of individual infostealer infections. Each entry represents a different person whose computer was compromised. The malware typically arrives through phishing emails, pirated software bundles, or drive-by downloads from compromised advertising networks. Once installed, infostealers raid browser credential stores, capturing every saved username and password along with the associated website URL. This data flows to command-and-control servers where it is compiled into massive log files like this one.

Check If Your Credentials Were Exposed

The full ARCEUSULP 244 stealer log — all 2,325,306 records — has been indexed in HEROIC's breach intelligence database, which contains over 400 billion compromised records. Search for your email address or password using HEROIC's free breach scanner. Given the enormous scale of this leak, checking your exposure is especially urgent. Act immediately if your credentials are found: change passwords, enable multi-factor authentication, and monitor accounts for suspicious activity.