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high severity June 20, 2024 · 3 min read

Z-lib Data Breach (2024)

If you are a customer of Z-lib, here’s what’s now in circulation.

In June 2024, almost 10M user records from Z-lib were discovered exposed online. Now defunct, Z-lib was a malicious clone of Z-Library, a well-known shadow online platform for pirating books and academic papers. The exposed data included usernames, email addresses, countries of residence, Bitcoin and Monero cryptocurrency wallet addresses, purchases and bcrypt password hashes.

Z-lib Data Breach (2024)

On June 20, 2024, 9.7 million Z-lib user records appeared in a public data breach notification, confirming that usernames, email addresses, countries of residence, cryptocurrency wallet addresses, purchase histories, and bcrypt-hashed passwords from the now-defunct shadow library service had been exposed.

Named in this incident?
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A leaked record is where it starts, not where it ends. What turns it into your front door is the look-up sites publishing your address beside your name — and those are what an AI reads when somebody asks about you. The free scan shows you both. We write to 582 companies.
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Reported Details from the Disclosure

The primary listing on Have I Been Pwned states that the breach occurred in June 2024 and affects nearly ten million accounts tied to a malicious clone of the original Z-Library piracy site. The exposed fields explicitly include email addresses, usernames, geographic locations, Bitcoin and Monero wallet addresses, purchase records, and bcrypt password hashes. The disclosure does not specify how the data was initially obtained or whether an extortion demand preceded the leak. Because Z-lib operated as an unauthorized mirror of the well-known book-piracy platform, many users accessed it with credentials they also used on legitimate services, amplifying the risk.

Why This Matters for You and Your Family

If you or anyone in your household ever created an account on a Z-lib domain, your email address and password hash are now public. Even though the passwords are stored as bcrypt hashes, determined attackers can still attempt to crack weaker ones offline. More immediately dangerous are the cryptocurrency wallet addresses and purchase histories that can be tied directly to your identity. A single leaked wallet address lets threat actors trace every transaction on the public blockchain, revealing balances, other addresses you control, and sometimes real-world identities when those wallets interact with exchanges. Geographic location data further narrows the pool of possible victims, making targeted phishing, SIM-swapping, or physical threats more practical.

Children or teenagers in your home who used the same email address for both academic piracy and gaming accounts face compounded risk. A breach like this rarely stays isolated; one set of credentials can unlock multiple services and begin an identity chain that leads straight to your front door.

Doxxing and Identity-Chain Implications

Once an attacker possesses your email, username, password hash, and crypto addresses, the doxxing potential grows quickly. Public blockchain explorers turn wallet addresses into permanent ledgers of financial activity. Cross-referencing purchase records with breached data from other sites can reveal reading habits, research interests, or even political leanings inferred from downloaded material. That information, paired with your country of residence, allows adversaries to craft convincing spear-phishing emails or to sell the full profile on underground markets. Credential leaks of this nature frequently cascade into account takeovers on gaming platforms, email providers, and social media, each new compromise feeding the next. The result is a persistent digital shadow that can surface months or years later in harassment campaigns, identity theft, or extortion attempts.

What to Do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, then use the cleanup to scrub what you can.
  • Rotate the password used on any Z-lib domain anywhere it has been reused and switch to a unique passphrase for every service; enable 2FA through an authenticator app rather than SMS.
  • Enable continuous DoxxScan monitoring across 13.1 billion+ breach records and more than 100 platforms so the next exposure of your data is caught in hours instead of months.
  • Cover the entire household with DoxxScan family protection that extends to dependents and children's gaming accounts, which often chain back to the same email or home address.
  • Let remediation specialists handle ongoing takedown requests across data brokers and leak sites while you focus on securing the accounts you still control.

The Z-lib incident is a reminder that even defunct piracy services continue to haunt users long after the site disappears. Starting today, treat every old account as a potential doorway into your broader digital life. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1B+ breach records and 100+ platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes children's gaming accounts—capabilities that directly counter the cascading takeovers this type of breach fuels.

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 Z-lib customer?
Z-lib is one listing. Your email is probably in others.
9.7M 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 contact details only, none of them permanent
Disclosed June 20, 2024
Last reviewed July 22, 2026
Affected 9.7M
Data exposed Cryptocurrency wallet addressesEmail addressesGeographic locationsPasswordsPurchasesUsernames
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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