The FB Dump: 5,237 Stolen Email and Password Pairs Shared on Telegram

HEROIC analysts identified a stealer log distributed on Telegram in August 2023 under the name FB, uploaded by an anonymous Telegram user. The file contained 5,237 records collected from compromised endpoint devices, each including an email address, a plaintext password, and a URL identifying the exact website or service where those credentials were used. The data was not sourced from a corporate database but harvested directly from the devices of individuals whose machines were silently infected with infostealer malware before this log was compiled and shared.

Why This Is Dangerous

With 5,237 records containing plaintext passwords, this file gives anyone who accesses it an immediately usable set of login credentials. No cracking, decoding, or guessing is required. Each record pairs an email address with the actual password the victim was using, along with the URL of a real site where that password worked. An attacker can begin testing these logins the moment they open the file, targeting email accounts, financial services, and any other platform listed in the URL data.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs (websites and services actively used by each victim)

Why This Matters

Stealer logs are among the most operationally useful data sets in criminal marketplaces because they require no further processing. For 5,237 individuals, this breach creates immediate risks of credential stuffing, where automated tools use stolen logins to access additional accounts across the web. The majority of people reuse passwords across multiple services, which means one exposed record can give an attacker access to email, banking, shopping, and social media accounts simultaneously. The URLs included in the log make this even more targeted, since attackers know in advance which platforms to prioritize. The consequences range from unauthorized purchases and drained accounts to complete identity theft and long-term financial damage.

How Stealer Logs Work

Information stealers are malware programs built to harvest credentials from infected devices without alerting the user. They are typically installed through phishing emails disguised as legitimate communications, malicious software downloads, or compromised websites that push code to visiting browsers. Once running on the device, the malware locates saved passwords in browsers like Chrome, Firefox, and Edge, along with stored credentials in email clients and other applications. The collected data is bundled into a log file and transmitted to the attacker. Distribution through Telegram channels allows these files to reach large audiences instantly. Because the infection and data collection happen in the background, victims typically have no awareness that their credentials were stolen until they discover unauthorized access to their accounts.

Check If You Are Affected

If your device was compromised in 2023 or you have noticed unusual account activity, your credentials may be part of this file. HEROIC's free breach scanner searches more than 400 billion exposed records, including stealer logs like this one distributed through Telegram and underground forums. Enter your email address to receive an immediate result showing whether your data is circulating in criminal networks. Identifying your exposure now gives you the best chance to change passwords and secure your accounts before further damage occurs.