The PromSnab123 Breach Happened in 2018. 17,124 Passwords Leaked.
HEROIC analysts identified a database breach affecting PromSnab123, a now-defunct Russian industrial classifieds board. The breach is dated to August 24, 2018, and exposed 17,124 records, including email addresses and plaintext passwords, which surfaced on a hacking forum.
Why a Breach From 2018 Still Matters Today
The data is years old, but the passwords inside it were never protected in the first place. Because they were stored in plaintext, anyone holding this dataset can read and use them exactly as written, with no cracking or extra effort required. Time does not make an exposed password safer, it only means more chances for someone to find and use it.
What Was Exposed in the PromSnab123 Breach
- Email addresses
- Plaintext passwords
Why This Matters
Old breaches like this one continue to fuel credential stuffing attacks, where attackers test leaked email and password pairs against banking, email, and other accounts. If someone tied to PromSnab123 reused the same password on another site, even years later, that account is still exposed to takeover, identity theft, or fraud.
How a Database and Combolist Breach Keeps Spreading
This incident is classified as a database and combolist breach. The original data was pulled from PromSnab123's systems and repackaged into combolists, files pairing emails with passwords that circulate and get reused on hacking forums long after the original breach date.
Check If You Are Affected
Use HEROIC's free breach scanner to see if your email appears in the PromSnab123 breach or any other leak, old or new. It checks your information against a database of more than 400 billion leaked records.
Breach Breakdown
17,124 passwords exposed. Is yours one of them?
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