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Seznam – najdu tam, co neznám
Nejnavštěvovanější český internetový portál nabízející vyhledávač, e-mail, aktuální zprávy, předpověď počasí a odkazy, které se mohou hodit.
IndustryOriginGlobal rankRank in Czechia
Updated at The higher the score, the more externally observable protections the system has recorded. This page does not certify that the website is reputable, legitimate, or completely free of vulnerabilities.
As of August 22, 2026 at 09:03, www.seznam.cz has a security score of 90.6/100 (grade A – “Excellent”). CyStack’s automated assessment recorded 8 issues to review after completing 100% of applicable checks. The website owner should address “Allowed browser content (CSP)” first, then review the remaining items in order of impact.
At assessment time, CyStack did not find www.seznam.cz or related infrastructure on any scam, phishing, or malware warning list after checking 5 online reputation sources. This result reflects external observations; it does not guarantee absolute safety or verify the organization’s legal status or reputation.
Addresses, servers and services that are visible from the Internet.
Frequently asked questions
A valid SSL certificate still does not prove that www.seznam.cz is safe, legitimate, or free of scam signals. For a more complete assessment, this report also checks phishing and malware, exposed email records, IPs and open ports, subdomains, technologies, and CVEs that may apply to observed versions.
www.seznam.cz used a valid SSL certificate at assessment time, valid until October 30, 2026. This status may change when the certificate expires or the server configuration changes.
Review HTTPS and certificateData sources
CyStack compiles scan results from its internal cybersecurity monitoring systems, including CyStack VulnScan and CyStack Threat Intelligence, together with publicly available Internet data. The assessment only observes and analyzes information already available; it does not attempt unauthorized access, test passwords, send exploit code, or change or disrupt the assessed system.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the enterprise.
These 3 failed checks or warnings have the greatest impact on the result for www.seznam.cz.
Why it matters
Content Security Policy (CSP) limits where scripts, styles, frames, and other browser content may come from. A strong policy reduces the impact if an attacker manages to inject content into a page.
What to do
Define only the sources the application needs, test the policy before activating it, and avoid broad wildcard (*) rules, unsafe-inline, and unsafe-eval where possible.
Scope of this check
This check only evaluates the homepage response and content that the scanner could reach. Other pages and sign-in flows may use different settings.
Evidence and check scope
References
Why it matters
A policy of quarantine or reject tells receiving services to move suspicious mail to spam or refuse it. A monitoring-only policy (p=none) records the problem but does not ask receivers to stop spoofed mail.
What to do
After every legitimate sender passes DMARC, move gradually to quarantine and then reject, covering 100% of messages.
Evidence and check scope
Why it matters
Without the nosniff setting, a browser may guess a file's type and treat harmless-looking content as executable code. This can turn an incorrect Content-Type into a security issue.
What to do
Send X-Content-Type-Options: nosniff on every response and return an accurate Content-Type.
Scope of this check
Each public IP is grouped with its open services, identified products and any CVEs that may apply to the observed version.
77.75.77.222www.seznam.cz
EnvoyEnvoyVersion not visible77.75.79.222www.seznam.cz2a02:598:2::1222www.seznam.czNo open service was observed on this address in the ports checked.
2a02:598:a::79:222www.seznam.czNo open service was observed on this address in the ports checked.
There are currently 10,000+ exposed email records matching the seznam.cz domain. These records may be old or already resolved. The website owner should verify them before resetting passwords or locking related accounts.
Review exposed email recordsThe assessment identified 1 technologies on www.seznam.cz, but no version was reliable enough for accurate CVE matching.
Review technologies and CVEsThe assessment observed 4 public IPs and 4 open ports for www.seznam.cz. An open port is not the same as a vulnerability, but the website owner should keep every public service updated and appropriately restrict access.
Review IPs and open portsThe assessment observed 1,450+ public subdomains of seznam.cz. This list can reveal additional entry points such as APIs, administration systems, or test environments, but it does not mean that every subdomain is risky.
Review discovered subdomainsReferences
This check only evaluates the homepage response and content that the scanner could reach. Other pages and sign-in flows may use different settings.
Evidence and check scope
References
Product not identified
EnvoyEnvoyVersion not visibleProduct not identified
Recently completed assessments, prioritizing websites with a similar sector, country or security grade for easier comparison.
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