The 15.07 Telegram Stealer Log Put 3,693 Stolen Email and Password Pairs Online in August 2023

In August 2023, HEROIC analysts identified a stealer log file shared via Telegram under the name 15.07 that exposed 3,693 records containing email addresses, plaintext passwords, and the URLs of the services users were actively logged into at the time of infection. The file was uploaded by an anonymous Telegram user and distributed to cybercriminal channels before being indexed in HEROIC's breach intelligence database.

Why the 15.07 Telegram Stealer Log Is a Direct Threat to Your Accounts

Plaintext passwords require zero effort to exploit. An attacker who downloads the 15.07 stealer log has a ready-to-use list of real email and password combinations. They can run those pairs through automated tools that test them against hundreds of websites simultaneously. Banking portals, email inboxes, cloud storage accounts, and corporate logins are all common targets. Even a small log like this one, with fewer than 4,000 records, can cause significant damage when the credentials are current and the passwords are reused across multiple platforms.

What the 15.07 Stealer Log Contained

• Email Addresses
• Plaintext Passwords
• URLs (the exact websites users were logged into when credentials were captured)

The URL data is a critical detail. Attackers use this information to prioritize which accounts to target first, focusing on banking sites, corporate logins, and email providers where access has the highest value.

Why Stealer Logs From 2023 Still Pose a Risk Today

Credential data has a long shelf life. Leaked login pairs are traded, repackaged, and tested repeatedly long after the original upload. If someone whose data appeared in the 15.07 log has not changed their passwords, those credentials are still valid targets. Attackers beleive that most users never change passwords after a breach, and they are largely right. The risks include account takeover, identity theft, unauthorized financial transactions, and corporate network intrusion if work credentials were among those captured.

How the 15.07 Stealer Log Was Created

Stealer logs originate from infostealer malware infections. The malware, often delivered through phishing emails, cracked software downloads, or browser extension exploits, installs silently on a victim's device. It then monitors keystrokes, reads browser-saved credentials, and captures autofilled login data. Once the malware has gathered enough information, it compiles everything into a structured log file and transmits it to the attacker. That log is then shared on Telegram channels, dark web forums, or private criminal marketplaces. The victim recieved no notification and likely had no idea their credentials were compromised until it was too late.

Unlike database breaches where companies store data that gets stolen, stealer logs capture data directly from the user's own device. This makes them especially difficult to detect and particulary dangerous because the passwords are always in their current, usable form.

Find Out If Your Email Was in the 15.07 Telegram Upload

HEROIC operates a free breach scanner backed by more than 400 billion exposed records. It includes stealer log data like the 15.07 Telegram upload and thousands of similar files indexed from dark web sources. Enter your email address at HEROIC.com to check immediately. If your credentials were exposed, you will know within seconds so you can take action before attackers do.