Cybersecurity Rating
by ImmuniWeb® CyberScore™

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  • Website Security Rating
  • Website Privacy Rating
  • Encryption Security Rating
  • Email Security Rating
  • GenAI Exposure Rating
  • Dark Web Exposure
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63,079 organizations tested
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667
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Cybersecurity Rating of a1.com

Website
Security Rating: A-
Website
Privacy Rating: In Progress
SSL
Security Rating: A
Email
Security Rating: A
GenAI
Exposure Rating: A+
Tested on November 9th, 2026 15:27 GMT+0
Website Security:Tests Finished
Website Privacy:11 In ProgressIn Progress
SSL Security:Tests Finished
Email Security:Test Finished
GenAI Exposure:Test Finished
Test in Progress...
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The test is currently in progress. The PDF download will be available once the test is finished.

Website Security Rating | Overview

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The total number of subdomains is capped at 50.

HostnameURLGradeTested on
a1.comhttps://a1.com/ANovember 9th, 2026 15:34
www.a1.comhttps://a1.com/A-November 9th, 2026 15:52
weihnachten.a1.comhttps://weihnachten.a1.net/ANovember 9th, 2026 15:41
jobs.a1.comhttps://jobs.a1.com/ANovember 9th, 2026 15:42
newsroom.a1.comhttps://newsroom.a1.com/CNovember 9th, 2026 15:42
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Website Privacy Rating | Overview

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The total number of subdomains is capped at 50.

HostnameURLGradeTested on
a1.comhttps://a1.com Test In Progress In Progress
www.a1.comhttps://www.a1.com Test In Progress In Progress
weihnachten.a1.comhttps://weihnachten.a1.com Test In Progress In Progress
jobs.a1.comhttps://jobs.a1.com Test In Progress In Progress
newsroom.a1.comhttps://newsroom.a1.com Test In Progress In Progress
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SSL Security Rating | Overview

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The total number of subdomains is capped at 50.

HostnameURLProtocolGradeTested on
a1.comhttps://a1.com
194.182.187.127:443		HTTPSA+November 9th, 2026 15:29
www.a1.comhttps://www.a1.com
194.182.187.127:443		HTTPSA+November 9th, 2026 15:40
weihnachten.a1.comhttps://weihnachten.a1.com
185.158.133.1:443		HTTPSA+November 9th, 2026 15:40
jobs.a1.comhttps://jobs.a1.com
194.182.187.222:443		HTTPSA+November 9th, 2026 15:41
newsroom.a1.comhttps://newsroom.a1.com
80.245.195.216:443		HTTPSA+November 9th, 2026 15:40
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Email Security Rating | Overview

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HostnameGradeTested on
a1.comANovember 9th, 2026 15:31
  • Email Server Security Report
    A total of 4 email servers were analyzed. Open relay was not detected, SMTP enumeration was not detected, a secure authentication was enforced across all tested servers, and PTR records were properly configured. The average response latency was approximately 0.082s.
  • Email SSL/TLS Encryption Report
    SSL/TLS security testing was completed for 4 email servers. Server grade is B+.
  • Email Server DNS Security Report
    SPF is set properly, DKIM is set properly, and DMARC is set properly. MTA-STS is not configured for this domain. A and MX DNS records are fully validated.
  • Email Server Black and Spam Lists Report
    No email servers were found on blacklists.
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GenAI Exposure Rating

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  • No vibe-coded or AI-created code patterns detected across 11 websites.
  • No leaks of AI tokens or other AI-related and sensitive data detected on the Dark Web.
  • No leaks of AI tokens or other AI-related and sensitive data detected across 11 websites.

Dark Web and Threat Exposure Rating | Overview

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HostnameTested on
a1.comNovember 9th, 2026 15:28
  • Dark Web Exposure Report
    A total of 409 dark web incidents detected, containing 3174 mentions of the domain. 378 out of 409 incidents originate from Compromised Databases. Out of all detected Compromised Credentials, 131 are considered to be of High risk. Mentions in Leaked Databases represent the most common source of compromised information, accounting for 3114 of the 3174 detected domain mentions on the Dark Web.
  • Unprotected Cloud Storage Report
    No cloud storage buckets found.
  • Phishing Websites Report
    No potential phishing websites found.
  • Cybersquatting Domains Report
    No potential cybersquatting domains found.
  • Typosquatting Domains Report
    No potential typosquatting domains found.
  • Fake Accounts in Social Media Report
    No squatted social network accounts found.
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