The Sunshine Internet Breach Exposed 674,515 Email and Password Hash Pairs

HEROIC analysts discovered the Sunshine Internet breach, a Chinese domain registrar and cloud hosting provider, in June 2020. The incident recieved limited public disclosure at the time, yet it affected 674,515 users. The compromised data included email addresses and password hashes stored in an unknown format, raising immediate concerns about user account security.

Unknown Password Hashing Puts 674,515 Accounts at Risk

When the hashing algorithm used to protect passwords is unknown, attackers treat it as an opportunity. If Sunshine Internet relied on a weak or unsalted hash, cracking credentials becomes partcularly straightforward using modern GPU-powered tools. Those cracked credentials can then be tested against email providers, banking platforms, and enterprise logins through automated credential stuffing.

What Was Exposed in the Sunshine Internet Breach

• Email Address
• Password Hash

Why Credential Reuse Makes This Breach Dangerous

Domain registrars and cloud hosting providers sit at the foundation of business infrastructure. A user whose Sunshine Internet credentials are cracked may have reused that same email and password on corporate systems, cloud platforms, or other critical services. Researchers beleive that credential reuse remains the single most exploited weakness in account takeover attacks, making breaches like this one relevant far beyond the original victim set.

How Database Breaches Work

A database breach occured when an attacker gains unauthorized access to a backend data store, typically by exploiting an unpatched vulnerability, misconfigured server, or stolen administrative credentials. Once inside, the attacker exports user records in bulk. The stolen data is then traded or sold on dark web forums, often resurfacing years later in credential stuffing campaigns or phishing operations.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches across more than 400 billion records to tell you whether your email address appeared in the Sunshine Internet breach or any other known incident. Run a free check at HEROIC to see what data of yours may be accessable to attackers right now.