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Security report for justcall.io

Justcall · Technology · United States

Medium risk. 3 critical or high findings in SSL/TLS and Security headers.

Security score

63/100

Risk levelMedium

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

JustCall is a cloud-based business communication platform specializing in AI-powered phone systems and SMS solutions tailored for remote sales and customer support teams. Founded in 2016 and headquartered in Palo Alto, California, the company offers a SaaS subscription model with a free trial, positioning itself as a leading provider in the telecommunications technology sector. Their platform supports international phone numbers and integrates with numerous business tools, enhancing sales pipelines and customer support efficiency. Technically, the website leverages modern frameworks such as React and integrates multiple analytics and marketing tools including HubSpot, Google Tag Manager, Facebook Pixel, Amplitude, and Visual Website Optimizer, reflecting a mature digital infrastructure. The site is hosted via NameCheap with HTTPS enforced, ensuring secure communications. Security posture is solid with best practices observed, though there is room for improvement in publishing explicit security policies and enabling DNSSEC. Privacy compliance is basic, with cookie consent mechanisms present but lacking explicit privacy and terms of service pages. Overall, JustCall demonstrates a professional and trustworthy online presence with extensive marketing and analytics capabilities.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 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

3 findings 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

  2. 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';…

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

Keep watching justcall.io

This scan found 20 issues across 5 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
0
Security headers
40
Email security
65
DNS health
70
Network security
100
GDPR outside view
100
Average
63

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

Technical appendix

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

Business context

Business profile

JustCall operates in the competitive SaaS telecommunications market, targeting businesses requiring remote communication solutions. Their competitive advantage lies in AI integration and multi-channel communication capabilities. The business model focuses on subscription revenue with a free trial to attract users. The company maintains a strong partnership ecosystem, evidenced by integrations and social media presence. Growth indicators include a substantial review base and active marketing campaigns. Strategic observations suggest opportunities to enhance transparency and compliance documentation to strengthen customer trust further.

Security posture

The security maturity level of JustCall's website is moderate to good. HTTPS is enforced, and security best practices such as secure link handling and cookie consent are implemented. However, the absence of published security policies, incident response contacts, and vulnerability disclosure mechanisms indicates gaps in transparency and readiness. DNSSEC is not enabled, which could be a potential risk. No vulnerabilities or exposed sensitive data were detected in the analyzed content. Compliance with GDPR is implied but not explicitly documented. The security culture appears focused on standard web security but could benefit from enhanced documentation and proactive disclosure.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service pages accessible from the main site.
  2. Enable DNSSEC to improve domain name system security.
  3. Create and publish a security policy and incident response contact information to enhance transparency.
  4. Implement a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Add additional security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options.

Contact details published on the site

Addresses
Legal name
Justcall
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Justcall
Description
Justcall is a cloud based business phone system for remote sales and customer support teams. Sign up for a free trial to use an international phone number to call customers remotely in seconds.
Key services
Cloud phone system, AI-powered phone systems, SMS solutions, Sales dialer, Customer support tools, International phone numbers
Content quality
good
Branding
consistent

Technology

Stack
React (implied by react-helmet meta tags), HubSpot (analytics, forms, banners), Google Tag Manager, Facebook Pixel, LinkedIn Insight Tag, Amplitude Analytics, Visual Website Optimizer (VWO), Poptin, Smartlook, Slick Carousel
Frameworks
React
Platforms
HubSpot
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Links to external domains open in new tabs with rel='noopener noreferrer'
  • Cookie consent mechanism present

Analytics and tracking

Services
Google Analytics (via GTM), Amplitude, HubSpot Analytics, Visual Website Optimizer, Smartlook
Tracking level
extensive
Privacy practices
basic

Advertising

Ad networks
Facebook Ads, HubSpot Ads
Tracking pixels
Facebook Pixel, LinkedIn Insight Tag, Amplitude, Smartlook, Poptin
Marketing tools
HubSpot, Visual Website Optimizer, Poptin, Smartlook
Transparency
good

Site quality

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

Key observations

  1. Website is a professional SaaS platform for business communication.
  2. Content is rich with marketing and product information.
  3. Multiple analytics and marketing tools are integrated.
  4. No explicit privacy or terms pages found in the provided content.
  5. No direct company contact emails or phone numbers found in HTML.
  6. Physical address is provided in structured data.
  7. Strong social media presence with verified company profiles.
  8. No security.txt or vulnerability disclosure found.
  9. No signs of WAF or content blocking.
Technical notes

Notes

The website is built on a modern technology stack including React and HubSpot CMS, integrated with multiple analytics and marketing platforms such as Google Tag Manager, Amplitude, and Visual Website Optimizer. Performance is moderate with delayed loading of some scripts for optimization. Mobile optimization is good with responsive design and font loading strategies. SEO is well addressed with meta tags, Open Graph, and JSON-LD structured data. Accessibility is basic but could be improved with more explicit ARIA roles and semantic markup. Hosting is via NameCheap with domain registration dating back to 2016, indicating stable infrastructure. Technical risks are minimal but monitoring third-party script dependencies for vulnerabilities is recommended.
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. 74/100Medium26 findingsView report
  2. 74/100Medium25 findingsView report
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