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high severity May 29, 2023 · 3 min read

Polish Credentials Data Breach (2023)

If you are a customer of Polish Credentials, here’s what’s now in circulation.

In May 2023, a credential stuffing list of 6.3M Polish email address and password pairs appeared on a local forum. Likely obtained by malware running on victims' machines, each record included an email address and plain text password alongside the website the credentials were used on. The data included 1.2M unique email addresses.

Polish Credentials Data Breach (2023)

On May 29, 2023, 1.2 million unique Polish email addresses paired with plaintext passwords appeared in a credential-stuffing list posted to a local forum. The dataset, totaling 6.3 million records, contained email-password pairs alongside the specific websites where those credentials had been used. The breach notification on Have I Been Pwned confirmed the exposure and attributed the likely initial access method to malware running on victims’ own machines.

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What's Publicly Reported from the Disclosure

The primary listing on Have I Been Pwned states that the compromised data set includes email addresses and passwords for 1.2 million distinct accounts. Each record also notes the website or service the credential pair was observed on. The disclosure does not specify the exact malware family responsible, nor does it name any ransomware group. It confirms the data first surfaced publicly on a Polish forum on May 29, 2023. The passwords were stored and leaked in plaintext, removing any need for cracking.

Why This Matters for You and Your Family

If any of your email addresses or those of your family members end in .pl or were used on Polish-language services, your credentials may be among the 1.2 million exposed records. Because the passwords are plaintext, anyone who obtains the list can immediately attempt to log in to those accounts and any others where the same password was reused. This type of breach frequently cascades beyond the original Polish services into email, banking, and social-media accounts. Children’s accounts are especially vulnerable because families often share similar password patterns or reuse credentials across gaming platforms and school logins.

The Doxxing and Identity-Chain Implications

Plaintext credential leaks like this one accelerate doxxing chains. An attacker who gains access to one email account can reset passwords elsewhere, harvest personal documents, and link your online handles to your real identity. The forum posting makes the data freely available to script kiddies and more sophisticated threat actors alike. Once an initial account takeover occurs, attackers can map additional data points such as phone numbers, addresses, and family relationships. Gaming accounts tied to the same email become entry points for further harassment or extortion, especially when children’s usernames and chat logs are exposed.

What to Do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, with cleanup handled by Warden specialists.
  • Rotate the password used on any Polish or .pl-linked service anywhere it is reused, and immediately enable 2FA through an authenticator app rather than SMS.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next credential leak that touches you or your family is caught in hours, not months.
  • Cover the household with DoxxScan family coverage that extends to dependents and children’s gaming accounts that often chain back to the same email address or physical location.
  • Let remediation specialists handle ongoing takedown requests for any personal data that surfaces on forums or data-broker sites following this exposure.

The incident underscores how quickly credential leaks turn into persistent identity risks that do not expire when the initial forum post fades. One decisive step now can break the chain before attackers link your data across multiple platforms. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, and hands-on remediation by specialists, with household coverage that includes children’s gaming accounts. Start your DoxxScan trial today to gain visibility and control over what has already leaked and what may surface next.

What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo
value redacted in this samplephone, household, property recordsBeenVerified
value redacted in this sample582 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach
unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Were you a Polish Credentials customer?
Polish Credentials is one listing. Your email is probably in others.
1.2M accounts were exposed here. Check whether yours is one — and find every other leak tied to the same address, in about 15 seconds. No account, no card.

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Report details & sourcing

Severity High
Disclosed May 29, 2023
Last reviewed July 22, 2026
Affected 1.2M
Data exposed Email addressesPasswords
Editorial & sourcing policy
GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.
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