Blackfire · Technology · France
Medium risk. 3 critical or high findings in Security headers and SSL/TLS.
Blackfire is a European-based technology company specializing in continuous observability and performance profiling solutions for PHP and Python applications. Positioned as a leading Web Observability platform in Europe, Blackfire offers SaaS tools that empower developers to identify and resolve performance bottlenecks proactively, enhancing application speed, stability, and efficiency. The company is trusted by over 1,000 engineering teams worldwide and operates under the parent company Platform.sh, which broadens its mission to provide comprehensive actionable observability. Technically, Blackfire's website is built on modern frameworks such as Gatsby and React, delivering fast performance, excellent mobile optimization, and good accessibility. The site employs strong security practices including HTTPS enforcement and multiple security headers, reflecting a mature security posture. Privacy compliance is well addressed with comprehensive privacy and cookie policies, including consent mechanisms aligned with GDPR. Security-wise, while the site demonstrates good baseline protections, it lacks explicit public security policies, incident response contacts, and vulnerability disclosure mechanisms, which are recommended for enhanced trust and transparency. The absence of WHOIS data due to privacy protection is justified given the business type and does not detract from the overall legitimacy of the company. Overall, Blackfire presents a professional, trustworthy, and technically sound online presence that aligns with its market positioning as a developer-focused performance observability solution. Strategic improvements in security transparency and contact availability would further strengthen its security posture and user 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
SSL certificate uses 256-bit key, which is considered weak
What to do: Use at least 2048-bit RSA or 256-bit ECC key
Need hands-on remediation? Email guard@offseq.com
This scan found 20 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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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.
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 blackfire.io, from OffSeq Breach.
1 subdomain 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 blackfire.io.
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Breach keeps ingesting new leaks, so these numbers can grow between scans.
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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