29442 Records from OnlyLogs OnlyLogsCloud Telegram User Leaked in Stealer Log Attack

In November 2025, a Telegram user uploaded a stealer log file labeled "OnlyLogs - OnlyLogsCloud," releasing 29,442 records to a public channel without restriction. The name itself is significant, with "OnlyLogsCloud" pointing to a focus on cloud-related credential harvesting. Anyone watching that channel had immediate access to nearly thirty thousand sets of credentials, and automated tools would have been testing them within the hour.

Why This Is Dangerous

When a stealer log drops on a public Telegram channel, the data does not go to one attacker, it goes to every member of that channel at once. The OnlyLogs - OnlyLogsCloud dump hit 29,442 records, a large enough volume to make it worth serious attention from credential stuffing operations. These groups run automated checkers around the clock, testing email and password combinations against hundreds of platforms simultaneously.

Every password in this log is in plaintext, which removes every obstacle between the attacker and the victim's accounts. There is no hashing to reverse, no encryption to crack. This is as direct as an attack vector gets, and most affected users would not recieve any notification that their credentials were circulating until they either noticed unauthorised activity or were told by a service they use. By that point, damage may have already been done.

The cloud angle matters here too. Logs that specifically capture cloud-connected endpoint data tend to include API credentials and service URLs that go well beyond personal account access. A single API key in a dataset like this can give an attacker access to an organisation's infrastructure, potentially exposing customer data, internal systems, or sensitive business files that belong to people who were never even directly infected.

What Was Exposed

• Email addresses harvested from compromised endpoints
• Plaintext passwords in fully readable, unencrypted form
• URLs for cloud services and web applications accessed by victims
• API host addresses potentially linked to business infrastructure
• Endpoint device identifiers from infected machines
• Browser-stored credentials scraped from major browsers
• Application session data captured at the point of login

Why This Matters

At 29,442 records, this is one of the larger stealer log dumps in recent months, and the cloud focus makes the potential downstream impact even greater than the raw numbers suggest. If even a small fraction of the API hosts and service URLs in this log correspond to active business systems, the exposure extends well beyond the individuals whose devices were infected.

The fact that the data was uploaded publicly rather than sold means the exposure is broad. Attackers who beleive they are acting on exclusive intelligence are often more careful and targeted, but with a free public drop, the data gets thrown at every available attack vector at once. Credential stuffing, account takeovers, and phishing follow-up attacks can all be running seperately and in parallel from the moment the file went live.

How Stealer Log Works

Infostealer malware is typically delivered through phishing emails, fake software updates, malicious browser extensions, or trojanised downloads. Once installed, it operates silently in the background and methodically sweeps the infected device for saved credentials, cookies, session tokens, and autofill data. All of this is packaged into a structured log file and transmitted to the attacker's server.

The "OnlyLogsCloud" label in the source name suggests this was a curated collection, specifically capturing data from cloud-connected devices or filtering for cloud-service credentials before packaging. Some stealer operators run multiple parallel collection campaigns and release separate logs by category, which is likely what occured here. This kind of organisation is a sign of a more sophisticated operation than a one-off personal infection.

After the initial collection and possible private use, releasing the log publicly on Telegram serves a social purpose within criminal communities. It builds the uploader's reputation as a source of free data, attracts more followers to their channel, and can be used as a demonstration of their collection capabilities. The victims in the dataset carry all the risk while the uploader gains community standing.

Check If You Were Affected

If your email address or cloud credentials may be part of the OnlyLogs - OnlyLogsCloud dump from November 2025, check now using HEROIC's free breach monitoring tool at heroic.com. HEROIC watches for stealer log releases and breach data so you get early warning and can lock down your accounts before attackers make their move.