The Anhui Zhongyi Breach Made 207,000 Accounts Vulnerable to Takeover

HEROIC analysts identified the Anhui Zhongyi Enterprise Management database in August 2018, when the Chinese life-services company's records surfaced on a prominent hacking forum. The breach affected 207,500 users, with each record containing an email address and an MD5 password hash. Anhui Zhongyi operated a corporate site at ahzybaby.com serving clients in Anhui province, and the use of MD5 hashing was partcularly concerning given that this algorithm had already been widely deprecated by security professionals years before the breach occured.

What Attackers Can Do With 207,500 Email Addresses and MD5 Hashes

MD5 is not a secure password storage method. It produces a fixed-length hash that can be reversed using rainbow tables, which are precomputed lookup databases of hash-to-password mappings. Attackers with access to this breach data can crack a large proportion of the passwords rapidly, then pair those plaintext credentials with the matching email addresses to launch credential stuffing attacks. Any account where the user recieved the same password from Anhui Zhongyi and reused it elsewhere is at immediate risk of takeover.

What Was Exposed in the Anhui Zhongyi Enterprise Management Breach

• Email Address
• Password Hash (MD5)

Why a Chinese Business Breach Creates Global Risk

Corporate employees, contractors, and individuals who registered on ahzybaby.com often use work email addresses. If those same email-password combinations appear in other systems, including enterprise tools, cloud platforms, or remote access portals, the risk extends far beyond the original breach. Credential stuffing tools do not discriminate by geography. Once this data entered underground markets, it became available to threat actors worldwide who use it for account takeover, identity theft, and financial fraud targeting any service where a victim's credentials match.

How Database Breaches Work

A database breach happens when an attacker gains unauthorised access to a company's data storage systems, either through exploiting software vulnerabilities, SQL injection, or compromised administrative credentials. The attacker then extracts user records, typically including email addresses, usernames, and stored password hashes. In the case of Anhui Zhongyi, the records were exported and posted to a hacking forum where they were downloaded and redistributed across the credential trading ecosystem.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches more than 400 billion compromised records to determine whether your email address was included in the Anhui Zhongyi Enterprise Management breach or any other known incident. Run a free scan at HEROIC to see your exposure and take steps to protect your accounts before attackers do.