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Security report for heroku.com

Heroku · Technology · United States

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

Security score

87/100

Risk levelLow

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

Heroku is a leading AI platform as a service (AI PaaS) provider that enables developers and enterprises to build, deploy, manage, and scale applications entirely in the cloud. The company positions itself strongly in the cloud technology market with a focus on AI integration, offering a comprehensive suite of services including managed data services and enterprise solutions. The website reflects a mature digital presence with professional design, clear navigation, and extensive content tailored to developers and business customers. Technically, the site is built on WordPress with modern technologies such as jQuery, Google Tag Manager, and reCAPTCHA for security and analytics. The site demonstrates good performance, mobile optimization, and SEO best practices. Security posture is strong with HTTPS enforced, multiple security headers, and recognized certifications like SOC 2 and ISO 27001. Cookie consent mechanisms and GDPR compliance are evident, supporting privacy best practices. However, the WHOIS data for the domain is unavailable, which is unusual for a major enterprise and may indicate privacy protection or registry issues. No explicit incident response or vulnerability disclosure information is found, which could be improved to enhance transparency and security readiness. Overall, the website and business appear legitimate and trustworthy, with a high level of professionalism and security maturity. Strategic recommendations include publishing clear incident response contacts, establishing a vulnerability disclosure program, and maintaining up-to-date third-party components to mitigate risks. These steps will further strengthen Heroku's security posture and trustworthiness in the competitive cloud services market.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
88/ 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.

    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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Keep watching heroku.com

This scan found 12 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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Recommended

€25per month

  • 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
75
Security headers
90
Email security
85
DNS health
85
Network security
100
GDPR outside view
88
Average
87

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 heroku.com, from OffSeq Breach.

Total records
389,261
Employees
4
Customers
389,107
Third parties
150
Weak passwords
7%

Latest record dated 2025-11-04 · 912 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 heroku.com.

Select it in the checkout above.

Masked preview

  • –signup.heroku.com2025-11-04
  • –id.heroku.com2025-07-19
  • –id.heroku.com2025-07-19
  • –id.heroku.com2025-04-19

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

Heroku operates in the technology sector as a PaaS provider with a strong emphasis on AI capabilities. Its business model revolves around subscription and usage-based services targeting developers and enterprises seeking cloud-native application deployment and management. The company enjoys a strong market position supported by recognized security certifications and compliance with GDPR. The website content and structure indicate a focus on developer engagement, enterprise solutions, and community support. Partnerships and integrations with platforms like GitHub and LinkedIn enhance its ecosystem. The absence of WHOIS data is a minor anomaly but does not detract from the company's established presence and brand consistency.

Security posture

Heroku demonstrates a mature security posture with enforced HTTPS, comprehensive security headers, and certifications such as SOC 2 and ISO 27001. The use of reCAPTCHA and cookie consent banners indicates attention to bot mitigation and privacy compliance. However, the lack of publicly available incident response contacts and vulnerability disclosure mechanisms represents a gap in transparency and readiness. No vulnerabilities or exposed sensitive data were detected in the website content. Overall, the security maturity is high, but improvements in incident response communication and vulnerability management disclosure are recommended to align with best practices and regulatory expectations.

Recommendations

  1. Publish explicit incident response contact information on the website to improve transparency and readiness.
  2. Establish and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Regularly audit and update third-party libraries and scripts to mitigate potential vulnerabilities.
  4. Enhance privacy compliance by detailing data retention policies and user data handling practices.
  5. Maintain consistent WHOIS information or clarify privacy protection to avoid trust concerns.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Heroku
Description
Heroku is an AI platform as a service (AI PaaS) that enables developers to build, run, and scale applications entirely in the cloud.
Key services
AI PaaS, Application deployment, Application management, Scaling apps, Managed data services, Enterprise solutions
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery, Google Tag Manager, reCAPTCHA, DataTables, Elementor
Frameworks
Yoast SEO
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of reCAPTCHA for bot protection
  • Cookie consent banner implemented
  • Security certifications displayed

Analytics and tracking

Services
Google Analytics, Parsely
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Parsely
Marketing tools
Parsely
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 rich content and professional design.
  2. Strong focus on AI PaaS and cloud application services.
  3. Comprehensive compliance and security certifications presented.
  4. No WHOIS data available, which is unusual for a large enterprise domain.
  5. Cookie consent and privacy policies are implemented and GDPR compliant.
  6. No explicit security incident response or vulnerability disclosure pages found.
  7. Multiple external trusted domains used for CDN, analytics, and media.
  8. No adult or questionable content detected.
Technical notes

Notes

The website is built on WordPress CMS using modern front-end technologies including jQuery and DataTables for interactive content. Google Tag Manager and Parsely are used for analytics and marketing tracking, with reCAPTCHA implemented for bot protection. The site is well-optimized for SEO with proper meta tags and structured data in JSON-LD format. Performance is moderate with good mobile responsiveness and accessibility features. The technical infrastructure supports a professional and scalable web presence suitable for an enterprise cloud platform provider. Opportunities exist to improve hosting transparency and further optimize performance metrics.
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. 84/100 +3Low20 findingsView report
  2. 81/100Low21 findingsView report
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