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80

seznam.cz

fair · Cyber Exposure Score · Technology

Redirect found: seznam.cz sends visitors to www.seznam.cz — both are analysed below (“Also analysed”).

Monitored since 24 Sep 2026 · last checked 26 Oct 2026

40
Email auth
100
DNS
100
TLS
100
Exposure
60
Breach history

The Cyber Exposure Score is a published 0–100 formula built only from publicly observable signals. How this is calculated.

This domain scores better than 55% of the 357 Technology organisations we track (cohort median 79). The sample is seeded from public incident data, not a random cross-section of the sector.

Posture summary

Email authentication

SPF ✓ ?all DMARC none DKIM ✗ DNSSEC ✓

DNS hygiene

2 nameservers single DNS provider CAA ✓ IPv6 ✓

Web & transport hygiene

HTTPS redirect ✓ HSTS ✓ HSTS preloaded CSP ✓ security.txt ✓

TLS / certificate

TLS TLSv1.3 64d to expiry

Internet exposure

2 open ports 0 KEV

Breach metadata

0 public breaches on medusalocker leak site

Domain & hosting

404 public hostnames registered 1996 AS43037 · SEZNAM- no blocklist hits

Also analysed: www.seznam.cz

seznam.cz sends visitors to www.seznam.cz. Same registered domain, so the mail, DNS, lookalike and breach findings above apply to it unchanged; these are its own website checks.

score 80/100 · fair TLS TLSv1.3 64d to expiry HTTPS redirect ✓ HSTS ✓ CSP ✓ 2 open ports 0 KEV

Ransomware leak-site listings (1)

This domain is named on the public leak site of a ransomware group. A leak-site post is a claim published by the group — not a verified fact, and not a statement by this organization. Groups list victims who did not pay, overstate what they hold, and occasionally name the wrong company. What is certain is that the listing itself is public.

GroupListedSector
medusalocker 2026-09-23 Technology

Leak-site postings are collected here from 2026-07-30 onwards; an earlier listing would not appear above.

Source: Ransomware.live

Public attack surface (404 hostnames in Certificate Transparency)

Hostnames this organization published in public TLS certificates. Passive OSINT — nothing was scanned; a wildcard certificate is in use, so the real footprint may be larger.

The hostname inventory — which forgotten hosts exist and where — is part of the complete audit for this domain.

Lookalike domains (49 registered of 89 checked)

Registered permutations of this domain. Existence is a fact, not an accusation — ownership and intent are not assessed. Those able to receive mail are the ones usable for invoice fraud and phishing. The Risk score (0–100) is a published formula weighing mail capability, registration age, spelling, what the homepage shows and phishing-feed hits, reduced when a name looks brand-owned (same registrar/nameservers, a redirect to this domain) or merely parked. How this is calculated.

DomainTypeMail-capableRegisteredRisk
sezam.cz omission yes 1998-01-28 (10498d) 73 critical
seznam.app tld yes 2026-04-29 (180d) 66 high
sseznam.cz repetition yes 2025-10-18 (373d) 66 high

46 further registered lookalike(s), 36 of them able to receive mail. The full list, with mail capability for each, is part of the complete audit.

Recommendations

Sources: Ransomware.live · Have I Been Pwned (CC BY 4.0) · Shodan InternetDB

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All information is aggregated from public sources for awareness only and does not constitute an accusation or a security assessment. No personal data or credentials are published.