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Security report for dayoneapp.com

Day One Journal App · Technology · N/a

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

69/100

Risk levelMedium

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

Day One Journal App is a well-established journaling application founded in 2011 and currently owned by Automattic. It offers a multi-platform journaling solution with strong security features such as passcode protection, biometric security, and end-to-end encryption. The app enjoys a strong market position with multiple awards and extensive positive user feedback. The website is professionally designed, mobile-optimized, and SEO-friendly, reflecting a mature digital presence. Technically, the site is built on WordPress with modern libraries and analytics tools integrated. Security posture is good with HTTPS enforced and encryption practices in place, though explicit security policies and incident response contacts are not publicly detailed. Privacy compliance is well addressed with clear privacy and cookie policies and consent mechanisms. Overall, the site and business demonstrate high credibility and trustworthiness.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
73/ 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

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 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. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  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
    • 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 dayoneapp.com

This scan found 22 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
42
Security headers
30
Email security
85
DNS health
85
Network security
100
GDPR outside view
73
Average
69

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

The company operates in the technology sector, targeting general consumers interested in journaling and personal diary solutions. Its freemium business model leverages a free app with premium subscription upgrades. The brand is supported by strong trust indicators including awards, media coverage, and social proof. The parent company Automattic provides additional credibility and resources. The company maintains a broad platform presence including iOS, Android, Mac, Windows, and web. Marketing and analytics are implemented with transparency and moderate user tracking. The partnership ecosystem includes major app stores and web domains. Growth is supported by continuous feature updates and community engagement.

Security posture

The security maturity level is good, with HTTPS and encryption implemented for user data protection. The app emphasizes user data ownership and security features. However, the website lacks a dedicated security policy page and explicit incident response contacts, which are recommended best practices. No vulnerabilities or exposed sensitive data were detected in the analysis. GDPR compliance is indicated via privacy policies and cookie consent. The absence of DNSSEC is a minor gap. Overall, the security culture appears mature but could benefit from enhanced transparency and formal vulnerability disclosure mechanisms.

Recommendations

  1. Enable DNSSEC on the domain to strengthen DNS security.
  2. Publish a dedicated security policy and incident response page with clear contact channels.
  3. Implement and advertise security headers such as Content-Security-Policy and X-Frame-Options.
  4. Consider publishing a vulnerability disclosure or security.txt file to encourage responsible reporting.
  5. Maintain transparency on data retention policies and enhance privacy compliance disclosures.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Day One Journal App
Description
The award-winning journal app for capturing life as you live it. Free to download on iPhone, Android, iPad, and Mac. Now available on the web.
Key services
Journaling app for iOS, Android, Mac, Windows, and Web, Passcode and biometric security, End-to-end encryption, Automatic backups and data export, Multimedia journal entries (photos, videos, audio, drawings), On This Day feature for revisiting past entries
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, WooCommerce, Jetpack, Google Tag Manager, React, jQuery, Moment.js
Frameworks
WordPress
Platforms
Web, iOS, Android, Mac, Windows
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of passcode and biometric security in app
  • End-to-end encryption for user data
  • Automatic backups and data export options

Analytics and tracking

Services
Jetpack Stats, Google Tag Manager, Gauges
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Gauges, Jetpack Stats
Marketing tools
ConvertFlow
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 no blocking or WAF challenges.
  2. Content is rich, professional, and well-structured.
  3. Strong brand presence with multiple awards and media mentions.
  4. Good privacy and cookie policies with consent mechanisms.
  5. No explicit security policy or incident response contact found.
  6. Use of modern web technologies and CMS (WordPress).
  7. HTTPS and encryption practices are in place.
  8. No suspicious or malicious external links detected.
  9. Social media presence is strong and consistent.
  10. No adult or questionable content detected.
Technical notes

Notes

The website is built on a modern WordPress CMS platform with WooCommerce for e-commerce capabilities. It uses React and jQuery libraries, Google Tag Manager for analytics, and Jetpack for performance and security enhancements. Hosting appears to be on AWS infrastructure, indicated by DNS servers. The site is mobile-optimized, fast loading, and SEO-friendly with comprehensive metadata and structured data. Technical debt appears low with up-to-date libraries and no visible errors. Opportunities exist to improve security headers and formalize security documentation. Overall, the technical infrastructure supports a robust 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

Earlier scans of this domain

  1. 69/100 +2Medium30 findingsView report
  2. 67/100Medium26 findingsView report
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