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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIT & CommunicationIT Consulting & ServicesSt. GallenBlackbox 51 GmbH
Blackbox 51 GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of B51 Informatiklösungen is the development and provision of IT security solutions and services, including: IT support and consulting, protection against malicious email attachments, phishing simulation and training, web hosting and domain purchase, and IT security tools and services. The company focuses on developing innovative solutions to IT security problems and offers its customers a range of services and tools to protect and secure their IT systems.

AI-generated
Offering

Products & services

Industry:IT Consulting & Services
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3.8/5

Blackbox 51 GmbH

✓ Offered5
Building Secure IT Infrastructures
Planning, implementation and documentation of IT environments according to current security standards, including network architecture, network security, firewall concepts, Zero Trust as well as VPN and remote access.
Security Check & Vulnerability Assessment
Systematic review of existing IT infrastructures for gaps, with IT audit, risk analysis and a prioritized action plan for immediate action.
Ongoing Support & Monitoring
External ongoing IT security support with monitoring, updates and patching, as well as incident response to update and monitor the systems.
Employee Training & Security Awareness
Hands-on training for teams in IT security and phishing detection, including security awareness, phishing simulations and workshops.
Threatly – Vulnerability Monitoring
Proprietary monitoring tool for CVE monitoring, real-time alerts and threat intelligence, which monitors affected technologies in the tech stack and alerts on security incidents.
Trust & reputation

ranQ Trust Score of Blackbox 51 GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Blackbox 51 GmbH scores 51.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.66.724%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.27.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
Blackbox 51 GmbH scores 77.2 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.86.512%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Blackbox 51 GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Blackbox 51 GmbH scores 4.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.4.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Blackbox 51 GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 2 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle4.52
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Secure profile

Location

Zürcher Strasse 431
9015 St. Gallen
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-382.919.342
Founded
2016 · 10 years
Last commercial register change
June 24, 2020
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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