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Security report for ren.pt

REN - Redes Energéticas Nacionais · Energy · Portugal

Medium risk. 1 critical or high finding in SSL/TLS.

Security score

72/100

Risk levelMedium

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

REN - Redes Energéticas Nacionais is a leading Portuguese company responsible for the transmission of electricity and natural gas at very high voltages and pressures, managing the national electric and gas systems. The company serves a broad audience including investors, suppliers, and the general public, positioning itself as a key player in Portugal's energy infrastructure sector. The website reflects a mature digital presence with comprehensive information on services, sustainability, innovation, and corporate governance. Technically, the site uses modern web technologies including jQuery, Highcharts, Cookiebot for consent management, and Umbraco CMS, delivering a responsive and accessible user experience. Security posture is strong with HTTPS enforced, anti-CSRF cookies, and cookie consent mechanisms, though some security headers could be improved. Privacy compliance is robust with clear GDPR-aligned policies and consent dialogs. Overall, REN's website demonstrates high professionalism, trustworthiness, and alignment with its business stature.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 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

1 finding rated critical or high. Fix these first.

  1. 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

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

Keep watching ren.pt

This scan found 10 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.

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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
0
Security headers
90
Email security
72
DNS health
85
Network security
100
GDPR outside view
83
Average
72

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 ren.pt, from OffSeq Breach.

Total records
454
Employees
32
Customers
321
Third parties
101
Weak passwords
11%

Latest record dated 2026-06-17 · 47 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 ren.pt.

Select it in the checkout above.

Masked preview

  • –adfs.ren.pt2026-06-17
  • –adfs.ren.pt2026-06-05
  • –ssp.ren.pt2026-06-05
  • –adfs.ren.pt2026-03-16
  • –adfs.ren.pt2026-02-16

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

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

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

Business context

Business profile

REN operates in the energy and transport sectors, focusing on electricity and gas transmission infrastructure. It maintains a strong market position as Portugal's national operator with subsidiaries such as Transemel, Electrogas, and Cahora Bassa. The business model centers on infrastructure management, system operation, and related services including telecommunications and consulting. The company targets investors, suppliers, employees, and the general public, emphasizing sustainability and innovation. The website supports investor relations and corporate transparency, indicating a mature partnership ecosystem and strategic market presence.

Security posture

The website exhibits a solid security foundation with HTTPS, cookie consent management, and anti-CSRF protections. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of some recommended security headers like Content-Security-Policy and X-Frame-Options suggests room for enhancement. There is no publicly visible security policy or incident response contact information, which could improve transparency and readiness. Overall, the security posture is good but could benefit from formalizing incident response and vulnerability disclosure mechanisms.

Recommendations

  1. Implement additional security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection against common web attacks.
  2. Publish a dedicated security policy page including incident response procedures and contact channels to improve transparency and trust.
  3. Consider adding a security.txt file or vulnerability disclosure program to encourage responsible reporting of security issues.
  4. Enhance monitoring and periodic review of third-party scripts and libraries to avoid potential vulnerabilities.
  5. Maintain and regularly update privacy and cookie policies to ensure ongoing GDPR compliance and user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
REN - Redes Energéticas Nacionais
Description
A REN é responsável por garantir o transporte de eletricidade em muito alta tensão e de gás em muito alta pressão, e pela gestão dos Sistemas Elétrico e de Gás
Key services
Electricity transmission, Gas transmission, System management, Telecommunications and IT services, Consulting, Metrology laboratory, Renewable gases, Energy guarantees of origin
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, jQuery 3.6.3, Highcharts, Cookiebot, ReadSpeaker webReader
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with granular controls
  • Anti-CSRF cookies (.AspNetCore.Antiforgery.#)
  • Session management cookies

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Cookiebot, Google (rc::a and rc::c cookies)
Marketing tools
Cookiebot
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges
  2. Comprehensive cookie consent and privacy mechanisms implemented
  3. Strong corporate branding and consistent navigation structure
  4. Use of modern web technologies and accessibility features
  5. No exposed sensitive data or security vulnerabilities detected in HTML content
  6. WHOIS data supports legitimacy and trustworthiness of the domain
Technical notes

Notes

The website is built on a modern technology stack including jQuery, Highcharts for data visualization, Cookiebot for consent management, and Umbraco CMS. It uses responsive design principles and accessibility features to provide a good user experience across devices. Performance is moderate with caching headers set but could be optimized further. The site integrates external services such as Google Fonts and ReadSpeaker for accessibility. The technical infrastructure supports the company's digital maturity but could improve in performance optimization and security header implementation.
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

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