Check yourself: Did the LLC ONLINEMARKET breach expose your data?

In February 2023, a major data breach occured at LLC ONLINEMARKET, a Ukraine-based call center services provider operating under the brand name Koll-Tsentr. The breach exposed an enormous volume of personal data, with 1,271,078 records compromised in a single database dump. Affected individuals had their email addresses, phone numbers, full names, usernames, and birthdays leaked to threat actors.

Why Exposed Birthdays and Contact Info Put You at Risk

The combination of birthdays, full names, phone numbers, and email addresses leaked in this breach gives criminals everything they need to impersonate victims or answer security questions on other accounts. This data bundle is seperate from passwords but is arguably more dangerous for long-term identity fraud. Attackers can use it to bypass account recovery systems and gain access to banking, email, and social media platforms.

What Was Exposed in the LLC ONLINEMARKET Breach

• Email Address
• Phone Number
• First Name
• Last Name
• Username
• Birthday

Why the LLC ONLINEMARKET Breach Still Matters Today

With over 1.27 million records exposed, this breach represents one of the larger incidents affecting Ukrainian IT service provider customers. The data remains searchable and usable on dark web marketplaces long after the initial exposure. Individuals whose records were leaked continue to face elevated risk of targeted phishing, account takeovers, and identity theft.

How Database Breaches Work

A database breach occurs when an attacker gains unauthorized access to a backend data store, often by exploiting unpatched software vulnerabilities, weak credentials, or misconfigured access controls. Once inside, attackers can extract large volumes of structured user data quickly. The resulting dump is then distributed or sold on underground forums where other criminals can acquire it for follow-on attacks.

Check If Your Data Was Exposed

HEROIC's breach intelligence platform searches across more than 400 billion records to surface exposures you may not know about. If you ever interacted with LLC ONLINEMARKET or its call center services, use HEROIC's free search tool to find out whether your personal data was compromised in this breach or others like it.