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Security report for heroku.com

Heroku · Technology · United States

Low risk. 2 critical or high findings in GDPR outside view and SSL/TLS.

Security score

84/100

Risk levelLow

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

Heroku is a leading AI Platform as a Service (AI PaaS) provider enabling developers and enterprises to build, deploy, and scale cloud applications with integrated AI capabilities. As a Salesforce subsidiary, Heroku holds a strong market position with a comprehensive ecosystem including managed data services, AI agents, and an extensive add-ons marketplace. The platform targets developers and businesses seeking simplified cloud infrastructure with advanced AI integration. Technically, the website is built on WordPress with Elementor and leverages modern JavaScript libraries and SEO tools, delivering fast performance and excellent mobile optimization. Security posture is robust with HTTPS, security headers, and secure forms, although explicit incident response and vulnerability disclosure policies are not publicly detailed. Overall, Heroku presents a professional, trustworthy, and mature digital presence aligned with enterprise standards.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 100 · Medium
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

2 findings rated critical or high. Fix these first.

  1. 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

  2. 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

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

Keep watching heroku.com

This scan found 14 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

€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
68
Average
84

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 focusing on cloud PaaS with AI enhancements. Its business model revolves around subscription-based platform services, enterprise solutions, and a marketplace for add-ons and integrations. The company benefits from Salesforce's backing, enhancing its credibility and market reach. Customer stories and community engagement indicate strong adoption across industries such as healthcare, fintech, and retail. The platform's AI capabilities and developer-centric tools provide competitive advantages. Strategic partnerships, including Salesforce integrations, further strengthen its ecosystem. Growth indicators include continuous product updates, compliance certifications, and active marketing through blogs and events.

Security posture

Heroku demonstrates a mature security posture with enforced HTTPS, use of Google reCAPTCHA, and presence of security headers. Compliance with ISO 27001, SOC 2, and PCI DSS standards is indicated, reflecting strong governance. However, the absence of publicly available incident response contacts or vulnerability disclosure programs suggests room for improvement in transparency and community engagement on security matters. No vulnerabilities or exposed sensitive data were detected in the website content. Privacy compliance is well addressed with clear policies and cookie consent mechanisms. Overall, the security culture appears strong but could benefit from enhanced disclosure and incident readiness communication.

Recommendations

  1. Publish a dedicated incident response and vulnerability disclosure page including security contact emails.
  2. Implement and publish a security.txt file to facilitate responsible vulnerability reporting.
  3. Enhance transparency on data retention and privacy practices to strengthen GDPR compliance.
  4. Regularly audit third-party scripts and dependencies to mitigate supply chain risks.
  5. Maintain and communicate continuous security training and awareness programs for developers and users.

Contact details published on the site

Addresses
Legal name
Heroku
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
Heroku Platform, Heroku AI, Managed Data Services, Enterprise Solutions, Add-ons Marketplace
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery, Google Tag Manager, Yoast SEO, WordPress, Max Mega Menu, PrismJS
Frameworks
WordPress, Elementor
Platforms
Heroku PaaS
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of Google reCAPTCHA
  • No exposed sensitive data in HTML
  • Secure login and signup forms

Analytics and tracking

Services
Google Analytics (via Google Tag Manager), Parsely
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Parsely
Marketing tools
Yoast SEO
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 navigation
  2. Strong branding consistent with Salesforce ownership
  3. Comprehensive AI PaaS platform offerings
  4. Good security posture with HTTPS and security headers
  5. Privacy and compliance information prominently available
  6. No signs of adult or questionable content
  7. WHOIS data unavailable, which is unusual but not critical given other trust signals
Technical notes

Notes

The website uses a modern and well-supported technology stack including WordPress CMS with Elementor page builder, jQuery, Google Tag Manager, and PrismJS for code highlighting. The site is hosted on Heroku's own platform, ensuring alignment with their service offerings. Performance is optimized with preconnects, DNS prefetching, and asynchronous script loading. SEO is enhanced by Yoast SEO Premium plugin and comprehensive meta tags including Open Graph and Twitter Cards. Accessibility features such as skip links and ARIA roles are present, contributing to good user experience. The technical implementation reflects a mature, scalable, and maintainable infrastructure suitable for enterprise-grade applications.
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. 81/100 −6Low21 findingsView report
  2. 87/100Low18 findingsView report
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