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Security report for personio.com

Personio · Technology · Germany

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

75/100

Risk levelMedium

0–100, higher is better. How it is calculated

Personio is a leading European HR software provider offering an all-in-one SaaS platform tailored for small to medium-sized enterprises and mid-sized companies. Their platform integrates core HR functions such as payroll, recruiting, time tracking, and employee engagement, serving over 1 million users globally. The company demonstrates a strong market position with a comprehensive suite of HR tools and a professional digital presence. Technically, Personio employs modern web technologies including React and Next.js, hosted likely on Vercel, ensuring fast performance and excellent mobile optimization. Their use of advanced consent management and analytics tools reflects a mature digital infrastructure. Security-wise, Personio maintains a robust posture with ISO 27001 and SOC 2 Type II certifications, HTTPS enforcement, and comprehensive security policies. No critical vulnerabilities or exposed sensitive data were detected. However, the absence of publicly available WHOIS registration data slightly reduces domain trustworthiness, though this is mitigated by other trust signals. Overall, Personio presents as a credible, secure, and well-managed HR technology provider.

Scanned

This is an earlier scan of personio.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
85/ 100 · Low
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

4 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…
  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

Need hands-on remediation? Email guard@offseq.com

Keep watching personio.com

This scan found 20 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
72
Security headers
30
Email security
85
DNS health
80
Network security
100
GDPR outside view
85
Average
75

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention personio.com, from OffSeq Breach.

Total records
339
Employees
0
Customers
339
Third parties
0
Weak passwords
3%

49 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for personio.com.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Personio operates in the technology sector, focusing on HR SaaS solutions for companies with 10 to 5,000 employees. Their business model revolves around subscription-based software services with a strong emphasis on integration and automation. The company targets SMEs and mid-sized enterprises across multiple European countries, supported by localized websites and multilingual content. Their ecosystem includes a marketplace for integrations and a learning academy, enhancing customer engagement and retention. Strategic certifications and a professional support infrastructure underpin their competitive advantage. The company shows signs of growth and market leadership in the HR software domain, with a clear focus on compliance and customer success.

Security posture

Personio exhibits a high level of security maturity, evidenced by their ISO 27001 and SOC 2 certifications and detailed security policies. The website enforces HTTPS with strong SSL configurations and implements multiple security headers to mitigate common web vulnerabilities. Cookie consent is managed via Usercentrics CMP, supporting GDPR compliance. Incident response contacts are provided, though visibility could be improved. No vulnerable libraries or exposed sensitive information were found. The company maintains a vulnerability disclosure process, though a security.txt file is not present. Overall, Personio's security posture is strong, with recommendations to enhance transparency and maintain continuous monitoring.

Recommendations

  1. Implement a security.txt file to facilitate vulnerability reporting and improve transparency.
  2. Increase visibility and accessibility of incident response contacts on the website.
  3. Regularly audit and update third-party scripts and libraries to mitigate emerging vulnerabilities.
  4. Enhance cookie consent mechanisms to ensure ongoing compliance with evolving privacy regulations.
  5. Conduct periodic penetration testing and security awareness training to sustain a strong security culture.

Contact details published on the site

Addresses
Legal name
Personio GmbH
VAT number
DE 815 273 610
Registration number
HRB 208 312
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Personio
Description
Personio is an all-in-one HR software solution for companies from 10-5,000 employees, powering over 1 million people worldwide.
Key services
Core HR, Payroll, Recruiting, Time Tracking, Absence Management, People Analytics, Workflow Automation, Documents & E-Signature, Talent Management, Employee Engagement
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Usercentrics CMP, Google Tag Manager, Visual Website Optimizer (VWO), Lottie animations, WebP images
Frameworks
Next.js
Platforms
Vercel (likely hosting)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of CSP
  • No exposed sensitive data in HTML
  • Secure cookie consent mechanism
  • No vulnerable libraries detected

Analytics and tracking

Services
Google Tag Manager, Visual Website Optimizer
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Adsense
Tracking pixels
Visual Website Optimizer
Marketing tools
Usercentrics CMP, Visual Website Optimizer
Transparency
good

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is professionally designed and well-structured.
  2. Comprehensive HR platform targeting SMEs and mid-sized companies.
  3. Strong security posture with ISO 27001 and SOC 2 certifications.
  4. Good privacy and cookie compliance with consent management.
  5. WHOIS data unavailable, which slightly impacts trust but not critical given other trust signals.
  6. No signs of WAF blocking or content restrictions.
  7. Multiple language support and localized domains available.
  8. Use of modern web technologies and performance optimizations.
Technical notes

Notes

The website is built on a modern tech stack featuring React and Next.js, optimized for performance and mobile responsiveness. Hosting appears to be on Vercel, leveraging CDN and serverless capabilities for fast content delivery. The site uses advanced front-end techniques such as Lottie animations and WebP images for enhanced user experience. SEO and accessibility best practices are well implemented, with proper meta tags, structured data (JSON-LD), and ARIA attributes. The integration of Usercentrics CMP and Google Tag Manager indicates a mature approach to privacy and analytics. Technical risks are minimal, with no detected outdated or vulnerable components. Opportunities exist to further improve security transparency and incident response readiness.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 68/100 −16Medium21 findingsView report
  2. 84/100Low24 findingsView report
  3. 84/100Low24 findingsView report
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