Your CRYPTON_LOGS 299PCS Data May Be at Risk: Here’s What You Need to Know

In November 2025, a Telegram user uploaded a stealer log labeled CRYPTON_LOGS 299PCS that contained 16,111 compromised records. The dataset includes plaintext passwords, email addresses, and URLs taken from real devices that were running infostealer malware at the time of capture. If you've ever had your device infected, even briefly, your credentials could easily be sitting in a file like this one right now.

Why This Is Dangerous

Like its companion upload CRYPTON_LOGS 301PCS, this log was shared publicly on Telegram, meaning it wasn't locked behind any kind of access barrier. Anyone with the link could download it, and many likely did within hours of it being posted.

Plaintext passwords are the most dangerous type of credential to have exposed. There's nothing to decrypt or reverse, the password is right there in readable form. Pair that with the email adress included in the same record and you have everything needed to attempt a login on practically any online service.

With over 16,000 records, this is a sizeable batch that represents a meaningful number of real people, likely spread across many different services and platforms. The scope of potential account takeovers is substantial.

What Was Exposed

• Email addresses used as login identifiers
• Plaintext passwords captured from compromised endpoints
• Website URLs and API host addresses accessed by infected devices
• Browser-saved credentials and autofill data
• Authentication tokens and active session data
• Application login paths and service endpoints
• Device-level endpoint identifiers

Why This Matters

The CRYPTON_LOGS series appears to be an ongoing operation, with numbered batches suggesting regular or semi-regular releases of newly harvested credentials. That pattern means this isn't an isolated incident but part of a broader, sustained campaign to collect and distribute stolen login data.

For anyone whose credentials appear in this log, the window for action is already narrow. Attackers don't wait around. Credential stuffing tools can test thousands of combinations per minute, and by the time a breach is publicly documented, many of the affected accounts have allready been tested or compromised.

How Stealer Log Works

Infostealer malware is designed to be quiet and fast. It typically arrives through a phishing link, a fake download, or a trojanized piece of software. Once it runs on a device, it scans for saved passwords in browsers, looks for credentials stored by apps, and records anything the user types into login fields while it's active.

Within minutes, it compiles this into a structured log and sends it back to the attacker's server. The attacker then bundles multiple logs together into batches, which is likely what the "299PCS" label refers to here, 299 individual endpoint logs packaged as one collection.

These packages are then traded, sold, or shared freely on platforms like Telegram, where the CRYPTON_LOGS 299PCS file was uploaded. Each batch represents dozens or hundreds of compromised machines, and the people behind them rarely stop at one upload.

Check If You Were Affected

The best way to know if your details ended up in CRYPTON_LOGS 299PCS or any other breach is to run your email through HEROIC's free breach checker at heroic.com. It covers thousands of known data leaks and stealer log collections, and it takes only seconds to find out whether your accounts need immediate attention.