30,563 default 710 pcs Plaintext Passwords Exposed – Oct 2025

HEROIC analysts flagged a stealer log upload on October 31, 2025, posted to a public Telegram channel by an anonymous user. The file, titled "default 710 pcs 22.10.25," contained 30,563 records extracted from compromised endpoints. The name suggests the attacker bundled logs from approximately 710 infected machines collected around October 22, 2025. Each record includes a plaintext password, an associated email address, and a URL pointing to the service where those credentials were used. With data this fresh and this detailed, criminals have everything required for immediate, targeted acount attacks.

What the default 710 pcs Breach Gives Attackers

This breach hands attackers a ready-to-use toolkit for account takeover. Because the passwords are in plaintext, there is no need to crack or guess anything. A criminal who downloads this file can immediately begin logging into email accounts, cloud services, and corporate portals. The URLs included in each record act as a roadmap, telling the attacker exactly which login page to visit for each set of credentials. With 30,563 records available, automated tools can cycle through every account in a matter of hours, locking out legitimate users and draining accounts before anyone realizes what has happend.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (including API host endpoints)

Why This Matters for Account Security

When 30,563 plaintext passwords circulate freely on Telegram, the downstream damage extends far beyond the original infected machines. Credential stuffing attacks use these exact lists to test the same email and password combination across banking sites, email providers, and corporate VPNs. Most people reuse passwords, which means a single compromised endpoint can cascade into full identity theft. Financial fraud becomes a real and immediate concern when attackers gain access to email accounts, which are often used to reset passwords for banks and investment platforms. The data from this log is separate from older breach compilations but is now being mixed into those collections, multiplying its reach.

How Stealer Log Breaches Work

Stealer logs are produced by a category of malware called infostealers. These programs are often delivered through phishing emails, fake software downloads, or malicious browser extensions. Once installed on a machine, the infostealer silently harvests saved browser passwords, cookies, autocomplete data, and any credentials entered into login forms. It also records the URLs of every site the victim visits or logs into. The attacker collects all of this data into a bundled log file and either sells it on underground markets or shares it on Telegram channels, sometimes for free to build a reputation. The label "default 710 pcs" suggests the attacker gathered logs from 710 seperate infected computers before uploading the consolidated file. The victims rarely know their machine is infected until the damage has already occured.

Check If You Are Affected

If your credentials appeared in this October 2025 stealer log or any of the thousands of similar files shared on Telegram, you need to know about it before an attacker finds them first. HEROIC provides a free breach scanner at heroic.com that searches over 400 billion exposed records to tell you exactly which breaches contain your data. The search takes only a few seconds and requires nothing more than your email address. Do not wait for suspicious account activity to confirm what might already beleive to be true. Check your exposure now and change any passwords that may have been captured.