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Z-library.sk Suspicious Website

June 23, 2026 at 11:41 PM
Suspicious Website
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Checked by Website Reputation Checker
Table of Contents
Danger Zone
Risky Territory
Caution Advised
Trusted but Verify
Safe & Secure

Z-library → Safety Check

First checked May 28, 2025 at 8:36 PM
Website content and technical signals analyzed
Method: automated checks.
Every website owner can claim their profile for free and engage with reviewers.
Suspicious Website This site is classified as Suspicious Website based on multiple risk signals, including 4 blacklist detections and no established public user-review history. These risks are driven by active warning signals despite the site's longer domain history.
Trust signal radar Normalized trust signals for z-library.sk Domain Maturity: 898 days Domain Maturity Warning Cleanliness: 3 detections Warning Cleanliness Safety Level: 2 negative tags, 1 warning signal Safety Level Positive Signals: 2 positive signals Positive Signals Popularity: Tranco rank 18,403 Popularity Trust Zone: .sk Trust Zone Operational Signals: 1 detected services Operational Signals Location Credibility: Hosting country CH Location Credibility
Figure 1. Trust signal radar for z-library.sk. Larger shaded area indicates stronger trust signals.

How we scored z-library.sk

On-page mentions:
Books, Sports
Tech signals:
Web Application
Positive signals:
  • popular site
  • an active SSL certificate (3 months)
  • multi-language support
  • a domain age of 2.5 years
Negative signals:
  • security-provider warnings
  • multiple malware or phishing blacklist detections (2)
  • a low third-party reputation score
Context signals:
  • content related to sports
35 /100
Trust Score
2.5 years
Domain Age
CH
Location
4
Provider warnings
Last checked June 23, 2026 at 11:41 PM by Gridinsoft Trust Model v2.4.8

What is Z-library?

Our system marks Z-library.sk as suspicious. The decision is based on a cluster of weak trust signals, not one isolated event.

Examples we frequently observe in this group: ownership data that cannot be verified, support pages with no workable contacts, reused template content, and redirects/scripts that do not match the visible site purpose. Each item alone may be explainable. Together, they increase user risk.

Z-library.sk
Figure 2. Website screenshot for Z-library.sk. 2026-06-24 02:41:43

Recommended handling: treat this domain as untrusted. View pages only, avoid sign-in, avoid payments, and do not download files unless the source can be independently confirmed.

This domain was registered 2 years ago through the company IMLI-0001 and ownership information is not publicly available. Complaint contact not found.

Is z-library.sk safe?

— Unfortunately, not likely.

🚨 Gridinsoft blocks this website because it was classified as suspicious website.

z-library.sk has a blacklist warning and a 35/100 trust score. Verify the site identity before use and avoid sending sensitive or payment data.

Why is z-library.sk marked "Suspicious Website"?

Gridinsoft evaluates z-library.sk, focusing on suspicious content indicators (Blacklisted, Low Scamadviser Score), hosting technology and infrastructure, SSL certificate status, website reputation across multiple databases, customer reviews from various independent platforms. We weigh these indicators to calculate the trust score.

Note: Automated systems are not perfect — while the evidence suggests risk, there is still a chance the site is legitimate. We recommend you check the website using detailed analysis or by contacting the company directly through verified channels.

Z-library Digital Footprints

A structured view of the site's detected themes, page signals, and related online footprint elements.

Deals
Books
Sports
Web Application

This site is configured as an installable web application (PWA-style behavior) with app-like interaction patterns.

AI-generated Text

This site contains text patterns consistent with machine-generated or AI-assisted content production.

Multilanguage

The website provides multi-language support, demonstrating international accessibility and commitment to diverse user populations. Multi-language implementation typically indicates professional development standards and global operational scope, representing a positive trust indicator.

Popular Site

This site shows elevated traffic signals relative to similar domains; this is generally positive but does not by itself prove legitimacy.

Blacklisted

Gridinsoft Internet Security classified this site as unsafe. As a VirusTotal partner, our detections contribute to broader protection across tools and browsers.

Low Scamadviser Score

Independent security assessment from Scamadviser indicates z-library.sk has received a low trust rating, suggesting potential security risks or operational concerns requiring user caution.

Color Guide
  • Requires special attention Marks high-risk findings that should be reviewed first.
  • Exercise caution Highlights areas involving user data, payments, or permissions.
  • Positive indicators Shows trust signals that support the site's reliability.
  • Neutral General context that does not increase or reduce risk on its own.

Provider warnings: 4/29 Suspicious Website

This section shows what trusted security sources say about this site.

A warning appears when one or more sources report malware, phishing, abuse, or other safety concerns. Each row shows the source and its verdict.

If no source reports a warning, the site is shown as clear in this section.

Gridinsoft Threat List
Warned
Chong Lua Dao
Malicious
Scamadviser
Warned
alphaMountain.ai
Not recommended
BitDefender
Clean
Kaspersky
Clean
ESET
Clean
Sophos
Clean
Google Safebrowsing
Clean
Fortinet
Clean
G-Data
Clean
Webroot
Clean
Dr.Web
Clean
Forcepoint ThreatSeeker
Clean
CyRadar
Clean
Lionic
Clean
Quick Heal
Clean
Phishing Database
Clean
Phishtank
Clean
OpenPhish
Clean
Netcraft
Clean
Sucuri SiteCheck
Clean
Criminal IP
Clean
URLhaus
Clean
Emsisoft
Clean
Spam404
Clean
Trustwave
Clean
VX Vault
Clean
Quttera
Clean

Z-library.sk blocked? Check the provider verdict report created on June 24, 2026

Domain Information

Created January 7, 2024 at 10:00 PM Updated: November 8, 2025 at 10:00 PM
Domain Age 2.5 years
Registrar IMLI-0001
Domain Status Client Transfer Prohibited
Top Level Domain .sk Country Code TLD

Technical Details

HTTP status 503
IP Address 31.7.58.178
Hostname hostedby.privatelayer.com
Hosting Provider AS51852 Private Layer INC Bellinzona, Ticino, CH
SSL Certificate R13 TLS 1.3 · Valid for: 3 months · from May 15, 2026 at 11:57 AM · to August 13, 2026 at 11:57 AM
Name Servers geneva.flat2float.la
kishinev.flat2float.gy

Content Analysis

Website title Z-Library – the world’s largest e-book library. Your gateway to knowledge and culture.
Website description Z-Library is an online library dedicated to enhancing global education through easy access to books. Recognizing books as a valuable source of knowledge throughout history, we aim to provide free literature access to ...
Available languages
Mentioned hosts (41)
ru.z-library.sk bn.z-library.sk te.z-library.sk www.change.org it.z-library.sk fr.z-library.sk th.z-library.sk zh.z-library.sk mastodon.social de.z-library.sk az.z-library.sk counter.yadro.ru uk.z-library.sk covers.z-library.sk id.z-library.sk and 26 more

Security Analysis

Detection Signatures These signatures are used to generate the security fingerprint below.
Deals Books Sports Web Application
Verified Services This domain has been verified by the following legitimate services and organizations, confirming authentic ownership and proper email security configuration.
Google Verification Domain ownership verified by Google.
Security Fingerprint Unique identifier based on site analysis
potato-harry-april-hot

How to block Z-library.sk?

Our Anti-Malware can automatically block access to z-library.sk if it is flagged as malicious.

  1. Install and run the protection.
  2. The program will block flagged domains and remove related threats.

Exclusion

If you believe z-library.sk is safe, you can add it to the exclusion list:

  1. Open Gridinsoft Anti-Malware → Tools → Ignore List.
  2. Go to the Internet tab and add z-library.sk.

See detailed instructions for more options.

Are You the Owner?

If you own Z-library.sk and want to challenge the trust score, please submit a review request via portal.gridinsoft.com. There you can claim your profile and add verified company/contact details. If you cannot access the portal, email legal(at)gridinsoft.com with proof of legitimacy and contact details. We never charge website owners for reviews or reconsideration requests. For more information, please review our Disclaimer.

Leave a review

Share your real experience with z-library.sk. Is it a trustworthy site, or did you encounter any issues? The more detail you provide, the more helpful your review is for others!

Publication Tip

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Your score for z-library.sk

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