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Security report for delta.app

Delta · Finance · N/a

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

Security score

80/100

Risk levelLow

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

Delta by eToro is a leading investment tracking platform that consolidates multiple asset classes including stocks, cryptocurrencies, ETFs, commodities, indices, and forex into a single, user-friendly app. With over 5 million users and recognition as the Best Portfolio Tracker of 2024 by Benzinga, Delta offers real-time insights, personalized alerts, and seamless integration with wallets, exchanges, and brokerages. The platform supports multiple operating systems including iOS, Android, Windows, Mac, and web, reflecting a mature and versatile technical infrastructure. The website is built on Webflow with modern libraries such as jQuery and Swiper.js, and employs advanced bot protection mechanisms including Google reCAPTCHA v3 and Cloudflare Turnstile.

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

3 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 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. 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
    • 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 delta.app

This scan found 15 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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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
57
Security headers
65
Email security
87
DNS health
90
Network security
100
GDPR outside view
83
Average
80

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

Delta holds a strong market position as a trusted portfolio tracker with a large user base and industry recognition. Its business model includes free and PRO subscription tiers, targeting retail and professional investors seeking comprehensive portfolio management tools. The company benefits from its association with eToro, a well-known financial services provider, enhancing credibility and market reach. The website's affiliate program and extensive social media presence support marketing and user acquisition strategies. The platform's ability to connect with numerous brokerages and exchanges positions it competitively in the fintech space.

Security posture

The website demonstrates a solid security posture with enforced HTTPS, use of CAPTCHA technologies to prevent automated abuse, and no visible exposure of sensitive data. However, explicit security policies and incident response information are not publicly available, representing an area for improvement. The absence of a security.txt file and direct security contact channels limits transparency for vulnerability reporting. Overall, the site follows best practices for web security but could enhance trust by publishing detailed security documentation.

Recommendations

  1. Publish a dedicated security policy and incident response plan accessible from the website footer.
  2. Implement and expose a security.txt file to facilitate responsible vulnerability disclosure.
  3. Add explicit security headers such as Content-Security-Policy and X-Content-Type-Options and document them.
  4. Provide direct security contact channels (e.g., security@delta.app) for incident reporting.
  5. Regularly audit third-party scripts and dependencies to ensure no vulnerabilities are introduced.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Delta
Description
Delta is a leading investment tracker or portfolio app that allows users to track various assets including stocks, cryptocurrencies, and more. Receive custom alerts based on your portfolio. Offering real-time insights and personalized portfolio management.
Key services
Portfolio tracking for stocks, crypto, ETFs, commodities, indices, forex, Custom alerts and notifications, Account linking to wallets, exchanges, and brokerages, Real-time insights and analytics
Content quality
excellent
Branding
consistent

Technology

Stack
Webflow CMS, jQuery 3.5.1, Swiper.js, Google Tag Manager, Facebook Pixel, Google reCAPTCHA v3, Cloudflare Turnstile Captcha
Frameworks
Webflow
Platforms
iOS, Android, Windows, Mac, Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of Google reCAPTCHA v3 and Cloudflare Turnstile for bot protection
  • No exposed sensitive data in HTML
  • Secure forms with CAPTCHA
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Tag Manager, Facebook Pixel
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Facebook Pixel
Marketing tools
Facebook Pixel, Cookie Consent by Finsweet
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 brand presence with consistent logos and messaging
  3. Multiple platform support including mobile and web
  4. Robust privacy and cookie policies with consent mechanisms
  5. Use of modern security and anti-bot technologies
  6. Active user engagement via newsletter and support channels
  7. No suspicious or malicious content detected
Technical notes

Notes

The website leverages a modern tech stack centered on Webflow CMS, enhanced with jQuery and Swiper.js for interactivity and responsive design. Hosting appears to be via Cloudflare, providing CDN and security benefits. Performance is optimized with responsive images, lazy loading, and efficient script loading. Accessibility features such as focus-visible outlines and semantic HTML are present, contributing to a good user experience. SEO is supported by comprehensive meta tags, Open Graph data, and structured JSON-LD schema. The site is mobile-optimized and supports multiple platforms, reflecting a mature digital infrastructure suitable for a large user base.
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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