119362 Records from Logs_4 November Leaked in Stealer Log Attack

On November 4, 2025, a Telegram user uploaded a stealer log file labeled "Logs_4 November" containing over 119,000 stolen credential records. This is one of the larger single-day dumps seen in recent months, and the timing, just days before the file was indexed, means many of these credentials may still be in active use. With plaintext passwords exposed across more than 119,000 accounts, the attack surface created by this single leak is substantial.

Why This Is Dangerous

A dataset of 119,362 records with plaintext passwords is not just a privacy concern, it is an active resource for attackers running credential stuffing campaigns. These tools can test thousands of username and password combinations per minute across hundreds of websites, and with a file this size, even a one percent success rate means over 1,000 compromised accounts.

Because the data was shared publicly on Telegram, it was immediatly accessible to anyone subscribed to that channel. There is no paywall, no access restriction, and no way to revoke distribution once a file like this goes out. The credentials have already spread.

The inclusion of API host URLs alongside email addresses and passwords suggests some of these records came from business or developer environments, where compromised credentials can grant access to production systems, cloud APIs, or internal tools beyond just personal accounts.

What Was Exposed

• Email addresses associated with compromised user accounts
• Plaintext passwords captured directly from infected endpoints
• URLs of websites and services the victims were actively using
• API host addresses from application and developer sessions
• Browser-saved login credentials swept up by stealer malware
• Active authentication tokens from sessions open at infection time
• Endpoint metadata linking records to specific infected devices
• Service-specific login pairs covering a broad range of platforms

Why This Matters

At 119,362 records, "Logs_4 November" is large enough to matter at scale. A file this size, compiled and released in a single day, points to either a coordinated infostealer campaign running across many devices simultaneously or an aggregation of logs from multiple sources. Either way, the volume indicates a serious and organized operation rather than an opportunistic one-off leak.

The recency of this leak, November 2025, means there has been very little time for affected individuals to detect the compromise and change their passwords. People whose credentials appear here are at elevated risk right now, not at some point in the future, and the window for attackers to exploit these records before they go stale is very much open.

How Stealer Log Works

Infostealer malware gets onto devices through phishing campaigns, malicious software downloads, fake update prompts, or bundled installers. Once it runs on a device, it operates quietly in the background, collecting saved browser passwords, session cookies, clipboard data, and any credentials entered into login forms during the infection window.

The harvested data is packaged into a structured log file and transmitted back to the attacker via a command-and-control server or directly to a Telegram bot. From there, the logs are sorted, compiled, and distributed through channels like the one where this file appeared. The naming pattern "Logs_4 November" suggests these are being released on a regular schedule, with batches corresponding to specific dates.

What makes this type of attack particularly hard to defend against at the individual level is that the malware often arrives through trusted-looking channels. A cracked software download or a convincing phishing email is all it takes, and the victim may never notice anything wrong while their credentials are quietly being packaged and shipped off to criminal marketplaces.

Check If You Were Affected

Given how recently this leak surfaced, it is worth checking your exposure as soon as possible. Use HEROIC's free breach checker at heroic.com to see whether your email adress appears in this file or any other known credential dump. If your email shows up, change the affected password immediately and review any other accounts where you may have used the same credentials, especially if you beleive your passwords have not been updated recently.