One Dark Web Listing. 29,477 Crypto Accounts From BitsCircle.

HEROIC analysts identified the BitsCircle breach while reviewing a Telegram channel known for distributing older cryptocurrency platform data. The data, which occured on December 30, 2016, covered 29,477 user accounts from bitscircle.com, a now-defunct Bitcoin and cryptocurrency social networking platform based in the United States. The dataset appeared as a structured database export, complete and organized in a way that indicated a direct backend extraction. What made this find partcularly significant was the platform's context: users of cryptocurrency services tend to reuse credentials across financial platforms, wallets, and exchanges, making this breach a high-value asset for attackers even years after the fact.

Crypto Account Credentials From BitsCircle Are Fuel for Financial Fraud

BitsCircle was a cryptocurrency-focused platform, which means its users were likely also active on Bitcoin exchanges, digital wallets, and other financial services. Attackers who recieved this data understand that crypto users are high-value targets. Even with bcrypt-hashed passwords, credential stuffing tools combined with wordlists and known password patterns can identify matches. Any account where the same email and password combination was reused on an exchange or wallet is at direct risk of financial theft, with no chargebacks or recovery options once cryptocurrency moves.

What Was Exposed in the BitsCircle Breach

• User account records (29,477 total)
• Password hashes (bcrypt format)
• Account data tied to bitscircle.com cryptocurrency profiles
• User identifiers potentially linkable to other crypto platforms

Why Cryptocurrency Breaches Carry Outsized Financial Risk

Unlike standard account takeover, a compromised crypto account can result in permanent, irreversible financial loss. Credential stuffing attacks using BitsCircle data could give attackers a foothold into exchanges, hot wallets, and DeFi platforms. Identity theft risk is also elevated because many cryptocurrency services require identity verification documents. If attackers can piece together user identities from breach data, they can attempt account recovery fraud on financial platforms. The real-world impact of this breach is not limited to BitsCircle itself but extends to every financial service those 29,477 users ever accessed with the same credentials.

How Database Breaches Work

A database breach happens when an unauthorized party extracts records from a company's backend storage system. For platforms like BitsCircle, this often means the attacker exploited a vulnerability in the web application, used stolen admin credentials, or found an exposed database server. Once the data is copied, it can be sold, traded, or published on dark web forums and Telegram channels. The original company may shut down entirely, as BitsCircle did, but the data continues to circulate and pose risk to former users indefinitely.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches more than 400 billion records to determine whether your email or credentials appear in known breach datasets, including the BitsCircle incident. If you ever used bitscircle.com or reused those credentials on any financial or crypto platform, run a free scan at HEROIC.com right now to see exactly where your data has surfaced.