Mattecentrum · Education · Sweden
Medium risk. 3 critical or high findings in Security headers, SSL/TLS and 1 other check.
Formelsamlingen.se is a Swedish educational website operated by Mattecentrum, a reputable non-profit organization providing free mathematics support to children and youth in Sweden. The site offers comprehensive formula collections in mathematics, physics, and chemistry, supplemented by links to related educational platforms. The business model is non-profit and focused on educational support, targeting students and learners primarily in Sweden. The website enjoys a strong market position as a trusted free resource in its domain. Technically, the site uses AngularJS, MathJax, PrismJS, and other modern JavaScript libraries, with Umbraco CMS inferred from API paths. The site is mobile-optimized and accessible, with good SEO practices. Performance is moderate, with room for modernization of the AngularJS framework. The site employs HTTPS and cookie consent mechanisms, indicating a baseline security posture. Security-wise, the site benefits from HTTPS and cookie consent but lacks explicit privacy policy and security headers in the provided data. No vulnerabilities or exposed sensitive data were detected. WHOIS data is missing or inconsistent, likely due to querying the subdomain rather than the root domain, which slightly reduces trust but is mitigated by the organization's reputation. Overall, the site is a high-quality, trustworthy educational resource with good technical and security practices. Recommendations include publishing a clear privacy policy, adding security headers, and providing security incident contact information to enhance compliance and trust.
Scanned
NIS2 Art. 21(2)
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.
3 findings rated critical or high. Fix these first.
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.
Controls resources the browser is allowed to load
What to do: Implement a Content-Security-Policy appropriate for your application
TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.
Server supports weak protocols: TLSv1.1
What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions
DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.
SPF record has permissive policy allowing any server to send email
What to do: Use -all or ~all qualifier for better email security
Need hands-on remediation? Email guard@offseq.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.
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Each check with its score, findings and the evidence it collected.
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
Not counted
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.
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
Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.
Leaked records that mention formelsamlingen.se, from OffSeq Breach.
No leaked records found
Breach holds no records for formelsamlingen.se right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.
Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.
Automated reading of the public site. Ratings are indicative.
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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