onesto GmbH · Transportation · Germany
onesto GmbH operates a specialized Order Management System and Internet Booking Engine designed for corporate travel management. Their platform connects organizations with travel agencies and service providers such as airlines, rail, hotels, and car rentals, offering real-time, worldwide booking capabilities. The company emphasizes secure, certified data protection and PCI DSS compliance, positioning itself as a trusted provider in the transportation sector. Their product suite includes flight, rail, car, hotel bookings, and a mobile app for travel management, targeting corporate clients and business travelers primarily in Germany. Technically, the website is built on WordPress with common libraries like jQuery and Slick Carousel, hosted by Schlund Technologies. The site demonstrates moderate performance and good mobile optimization, though accessibility and SEO could be improved. Security certifications such as ISO 27001 and PCI DSS are prominently displayed, indicating a mature security posture. However, the absence of explicit security headers and cookie consent mechanisms suggests areas for enhancement. The security posture is solid with HTTPS enforced and certified frameworks in place, but lacks published incident response or vulnerability disclosure policies. No WAF or blocking mechanisms were detected, and no vulnerabilities or exposed sensitive data were found in the analysis. Contact information is complete and transparent, supporting business credibility. Overall, onesto GmbH presents a professional, secure, and trustworthy online presence suitable for its B2B business travel management market. Strategic improvements in privacy compliance and security transparency would further strengthen their position and reduce risk.
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.
4 findings rated critical or high. Fix these first.
These are the privacy signals visitors and data protection authorities look for under GDPR.
EU businesses are subject to strict GDPR requirements
What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures
GDPR requires clear information about cookie usage
What to do: Add a dedicated cookie policy explaining cookie usage and purposes
GDPR requires explicit consent for non-essential cookies
What to do: Implement a cookie consent banner that appears on first visit
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
Need hands-on remediation? Email guard@offseq.com
This scan found 19 issues across 5 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 onesto.de, from OffSeq Breach.
17 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 onesto.de.
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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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