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Security report for sharethis.com

ShareThis · Technology · United States

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

71/100

Risk levelMedium

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

ShareThis is a technology company specializing in digital behavioral data solutions and website engagement tools. Their platform offers free website tools to grow and engage audiences, alongside paid data products for media planning, targeting, and analytics. The company targets publishers, marketers, and businesses seeking to leverage real-time behavioral data for smarter decision-making. The website is professionally designed, content-rich, and supports multiple languages, reflecting a mature digital presence. Technically, the website is built on WordPress and integrates various modern marketing and analytics technologies such as Google Tag Manager, Google Analytics, Mixpanel, and Osano for consent management. Hosting is provided via Amazon AWS infrastructure. However, the website suffers from slow load times and a large page size, which could impact user experience. Mobile optimization is good, but accessibility features are basic. From a security perspective, the site has critical issues including an invalid or missing SSL certificate and lack of enabled TLS protocols, which significantly reduce the security posture. While HSTS is enabled, other best practices like OCSP stapling and session resumption are missing. Privacy compliance is strong with a comprehensive privacy policy, cookie consent banner, and GDPR compliance indicators. Business credibility is supported by clear company branding, social media presence, and trust seals. Overall, the site is functional and professional but requires urgent remediation of SSL and TLS issues to ensure secure user interactions. Strategic improvements in performance and accessibility would further enhance the digital maturity and user trust.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
43/ 100 · High
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

4 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"

  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

    • 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

  3. 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.

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

Keep watching sharethis.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

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
87
Security headers
55
Email security
60
DNS health
80
Network security
100
GDPR outside view
43
Average
71

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 sharethis.com, from OffSeq Breach.

Total records
89,016
Employees
22
Customers
88,925
Third parties
69
Weak passwords
43%

Latest record dated 2026-05-26 · 30 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 sharethis.com.

Select it in the checkout above.

Masked preview

  • –sharethis.com2026-05-26
  • –sharethis.com2026-05-26
  • –sharethis.com2026-05-26
  • –sharethis.com2026-04-13
  • –sharethis.com2026-02-26

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

ShareThis holds a strong position in the digital data and social sharing market, offering a freemium model with free website tools and premium data solutions. Their competitive advantage lies in real-time behavioral data and a broad suite of engagement tools. The company serves a global audience with multi-language support and targets digital marketers, publishers, and advertisers. Their partnership ecosystem includes major analytics and consent management providers. Growth indicators include active marketing, extensive social media presence, and continuous content updates. The business model leverages data monetization and SaaS tools, positioning ShareThis as a key player in digital audience engagement and data-driven marketing.

Security posture

The current security maturity level is low due to critical SSL/TLS misconfigurations. The absence of a valid SSL certificate and disabled TLS protocols expose users to potential interception and downgrade attacks. While HSTS is enabled, lack of OCSP stapling and session resumption reduces resilience. Privacy practices are robust with GDPR compliance and consent management via Osano CMP. No incident response or vulnerability disclosure policies are publicly found, indicating room for improvement in security governance. The company should prioritize fixing SSL issues, enhancing security headers, and publishing clear incident response contacts to improve security culture and readiness.

Recommendations

  1. Immediately fix and maintain a valid SSL certificate and enable TLS 1.2 or higher.
  2. Implement OCSP stapling and session resumption to improve SSL performance and security.
  3. Publish a clear security policy and incident response contact information on the website.
  4. Conduct regular security audits and vulnerability assessments to identify and remediate risks.
  5. Enhance accessibility features and optimize website performance to improve user experience and SEO.
Technical notes

Notes

The website uses a modern WordPress CMS with integrations for analytics (Google Analytics, Mixpanel), tag management (Google Tag Manager), consent management (Osano), and translation (Weglot). Hosting is on AWS infrastructure with DNS managed by AWS nameservers. Despite modern technologies, the site suffers from slow load times (15.9 seconds) and a large page size (~451 KB), indicating potential optimization opportunities. The site is mobile optimized and SEO friendly with proper meta tags and structured data. Technical risks include outdated or missing SSL configuration and lack of advanced security features, which could impact business operations and user trust.
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. 73/100Medium29 findingsView report
  2. 73/100Medium29 findingsView report
  3. 73/100Medium29 findingsView report
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