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Security report for zumo.tech

Zumo · Finance · United Kingdom

Medium risk. 5 critical or high findings in Security headers, Email security and 1 other check.

Security score

60/100

Risk levelMedium

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

Zumo is a UK-based specialist company providing modular, API-first digital asset infrastructure and enablement services tailored for banks, fintechs, exchanges, and crypto businesses aiming to enter or scale in the UK crypto market. Their platform covers custody, trading, onboarding, AML, financial promotions, and fiat integration, complemented by Zumo+, a premium enablement service layer offering regulatory compliance and go-to-market support. The company holds FCA registration and has a strong UK market presence since its founding in 2017. Technically, the website is built on WordPress with modern plugins and hosted on AWS infrastructure. It features good mobile optimization, accessibility, and SEO practices. Security posture is solid with HTTPS enforced and domain transfer protections, though DNSSEC is not enabled and no explicit security.txt or vulnerability disclosure pages were found. Cookie consent and privacy policies are comprehensive and GDPR compliant. Overall, the website demonstrates a high level of professionalism, trustworthiness, and business credibility. No critical security issues or content safety concerns were detected. The domain WHOIS data aligns well with the business claims, supporting legitimacy. The site effectively targets financial and technology sectors within the UK, serving a medium-sized enterprise audience. Strategic recommendations include enabling DNSSEC, adding explicit security policies and incident response information, and implementing Content Security Policy headers to further enhance security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 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

5 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

  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 zumo.tech

This scan found 25 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

Email alerts on material changes and an exportable JSON history of every change.

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Full report

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
15
Email security
60
DNS health
75
Network security
40
GDPR outside view
95
Average
60

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 zumo.tech, from OffSeq Breach.

No leaked records found

Breach holds no records for zumo.tech right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

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

Zumo occupies a niche as a UK market specialist in crypto infrastructure and compliance, targeting regulated financial institutions and crypto businesses. Their modular product approach and solution accelerators provide competitive advantages by enabling rapid UK market entry and regulatory alignment. The business model is B2B SaaS combined with professional services (Zumo+). The company shows growth orientation through ESG initiatives and partnerships. Their ecosystem includes subsidiaries and registered entities in the UK, reinforcing operational legitimacy. Social media and content marketing support brand visibility and customer engagement.

Security posture

The website enforces HTTPS and uses clientTransferProhibited domain status to prevent unauthorized domain transfers. However, DNSSEC is not enabled, which is a recommended best practice for DNS security. No Content Security Policy headers were detected, which could mitigate cross-site scripting risks. The site uses cookie consent mechanisms compliant with GDPR. No exposed sensitive data or vulnerable libraries were identified. Incident response and security policy documents are not publicly available, representing a gap in transparency. Overall, the security posture is good but could be improved with additional controls and disclosures.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Implement a Content Security Policy (CSP) header to reduce XSS and injection risks.
  3. Publish a security policy and incident response plan accessible to users and partners.
  4. Add a vulnerability disclosure or security.txt file to facilitate responsible reporting.
  5. Continue maintaining GDPR compliance and update cookie consent mechanisms as regulations evolve.

Contact details published on the site

Addresses
Legal name
Zumo Financial Services Limited and Zumo Technology Limited
Registration number
Zumo Financial Services Limited (SC583644), Zumo Technologies Limited (13526508), Blockstar Holdings Limited (13277394)
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Zumo
Description
Zumo is the UK market specialist helping businesses launch and scale crypto services with speed and confidence. Their modular, API-first platform delivers everything banks, fintechs, exchanges and VASPS need to support entry and maintain access to the UK crypto market in line with regulatory requirements. They combine technology with a premium enablement layer called Zumo+ for a complete UK go-to-market package blending infrastructure, regulatory compliance and execution support.
Key services
Crypto custody, Trading, Customer onboarding (KYC/KYB), AML monitoring, Financial promotions tracking, Fiat on/off ramp, Non-custodial wallet, Zumo+ enablement services
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, PHP, JavaScript, Smart Slider 3, Fluent Forms, GeneratePress theme, Google Tag Manager
Frameworks
WordPress
Platforms
AWS (inferred from AWS DNS servers)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • Cookie consent banner with opt-in mechanism

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Fluent Forms
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. Strong focus on UK crypto market compliance and enablement
  3. Clear modular product offerings and solution accelerators
  4. Active social media presence on LinkedIn, Twitter, Instagram
  5. Cookie consent and privacy policies implemented with high confidence
  6. No exposed sensitive data or obvious security issues detected
  7. WHOIS data supports legitimacy and business consistency
Technical notes

Notes

The website is built on WordPress CMS using a modern tech stack including PHP, JavaScript, and popular plugins such as Smart Slider 3 and Fluent Forms. Hosting is on AWS infrastructure, inferred from DNS servers. The site demonstrates good mobile responsiveness, accessibility, and SEO optimization with proper meta tags and structured data (JSON-LD). Performance is moderate, with some room for optimization. The use of Google Tag Manager indicates integrated analytics and marketing tools. No critical technical debt or deprecated libraries were detected. Overall, the technical implementation supports a professional and scalable digital presence.
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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