OWASP ASVS Level 2
Level 3 testing
Business-logic abuse
Auth
CybersecurityPenetration Testing
Penetration testing where the report is the runbook
CREST CRT and OSCP-credentialled offensive security engagements for regulated estates. Web, mobile, network, cloud, and full red-team, written by the engineers who found the issue, for the engineers who will fix it.
0%Critical findings remediated in SLA
0dMedian time to first fix
0Regulator-rejected reports (24 mo)
Offensive security disciplines
Every kind of penetration test we deliver
From a single web application to a full adversary-emulation red team. Each discipline is staffed by senior testers credentialled against the relevant standard, and assigned by name before the engagement begins.
- ExternalInternal network testing: lat…AD attack pathsPrivilege escalation
- IOSAndroid against OWASP MASVS:Biometric flowsJailbreak root behaviour
- AWSAzureGCP CSPM-grade review plusKMS sprawl
- Continuous scanning paired wi…Severity normalisationRemediation prioritisation by…
- Multi-stage adversary emulati…RansomwareFraud-rail abuse)Measured by detection
- Phishing simulations with mea…Baited credential captureVishing against named teamsPre-coordinated with HR
- SAST DAST plus manualPaymentsCryptoMulti-tenant isolation
- Hardware extractionFirmware analysisRF Bluetooth attack surfaceEmbedded-device protocol fuzz…
How a pen-test runs
Our Penetration Testing Methodology
Six phases from kickoff to remediation review. Standard application or infrastructure engagements complete in two weeks; red-team programmes run four to eight depending on goals.
- Phase 01Reconnaissance
Reconnaissance & Intelligence
Passive and active intelligence gathering against the in-scope estate: public OSINT, DNS / subdomain enumeration, technology fingerprinting, exposed credential review, and dark-web exposure checks.
- Attack-surface inventory
- OSINT exposure brief
- Technology fingerprint map
- Phase 02Scoping
Scoping & Rules of Engagement
Asset confirmation, in-scope / out-of-scope definition, escalation criteria, and named-tester assignment. Rules of engagement are signed before any traffic is generated against client systems.
- Signed RoE document
- Communication channel set up
- Tester nameplate issued
- Phase 03Vulnerability
Vulnerability Analysis
Authenticated and unauthenticated discovery: automated scanning paired with manual verification. Every finding is triaged for false positives and chained against business-logic context before it ever lands in a report.
- Verified finding register
- CVSS-scored severity matrix
- Exploit-chain hypothesis map
- Phase 04Exploitation
Exploitation & Lateral Movement
Human-led exploitation of confirmed vulnerabilities. Daily check-ins; critical findings escalated within four working hours. Lateral-movement chains are pursued to demonstrate true business impact, not theoretical risk.
- Exploit evidence captures
- Chained-finding analysis
- Daily progress digests
- Phase 05Post-Exploitation
Post-Exploitation & Impact
Demonstrate data-exfiltration, persistence, and privilege-escalation outcomes. Detection and response timings logged when blue-team coordination is in scope, so SOC effectiveness becomes a measurable artefact.
- Impact demonstration video
- Detection-time telemetry
- Sanitised exploit artefacts
- Phase 06Reporting
Reporting & Remediation Review
Written report within five working days of test end: every finding with reproduction steps, business-impact framing, and a code-level or config-level fix. Live debrief plus a thirty-day remediation-review window.
- PDF + Markdown report
- Executive + technical debrief
- 30-day remediation review
The difference we bring
Coverage built for every layer of your estate
Partner with offensive engineers who think like attackers and report like architects.
We team senior pen-testers with CREST CRT, OSCP, OSCE, and OSEP credentials against your full attack surface: apps, networks, cloud, identity, and people. The output is not scanner exhaust dressed as findings; it is a remediation runbook your engineers can execute against, mapped to the regulatory frame you are answering to.
- Senior-only testers, named on every engagement
- Reports mapped to FCA, PRA, HIPAA, and PCI DSS
- 30-day post-report remediation advisory included
360°
Attack surface coverage
Web · API · Mobile
Application-layer testing
Internal + External
Network & infra reach
AWS · Azure · GCP
Cloud configuration depth
Our engagement workflow
Seven stages from first call to ongoing support
Every engagement walks the same path, sized to your problem, but with the same verification gates baked in.
Phase 01Discovery
Two-week paid sprint. Architect-led. Output: regulator map, costed roadmap, signed scope.
Phase 02Planning
Pod composition, sequenced milestones, change-control governance, and risk register.
Phase 03Design
Reference architecture, threat model, design system, and acceptance criteria locked.
Phase 04Development
Weekly demos, trunk-based, CI/CD from day one. Code reviewed against spec at every gate.
Phase 05Testing
Unit, integration, e2e, security, performance, and accessibility, automated and gated.
Phase 06Deployment
Blue-green or canary, observability live before launch, rollback rehearsed.
Phase 07Support
Managed services or hypercare hand-off. Defined SLOs, named on-call, monthly reviews.
Success stories
Programmes we have shipped
3 critical
Fintech
Red-team engagement against a fintech app
Found and helped close three account-takeover paths before a fintech's launch.
Burp SuiteFridaMobSFOWASP MASVS
Country · UK
61
Healthcare
Penetration test for a hospital estate
Surfaced 61 exploitable paths across a hospital estate, prioritised by patient-safety impact.
ProwlerScoutSuiteCobalt StrikeNessus
Country · UK
74
Retail
Cloud penetration test for a retailer
Surfaced 74 exploitable misconfigurations across a retailer's multi-account cloud estate.
ProwlerScoutSuitePacuAWS
Country · UK
25k
Government & Public
Zero-trust rollout for a government agency
Rolled zero-trust access to 25,000 civil servants without a productivity dip.
OktaZscalerEntra IDTerraform
Country · UK
90%
Manufacturing
Privileged access overhaul for a manufacturer
Cut standing privileged access 90% across a manufacturer's IT and OT estate.
CyberArkEntra PIMTerraform
Country · DE
22%
Wealth Management
Customer identity rebuild for a wealth platform
Passwordless identity cut account-takeover 22% and sign-in friction at a wealth platform.
Auth0WebAuthnFIDO2Node.js
Country · CH
12 weeks
Pharma
GxP and Annex 11 compliance for a pharma manufacturer
Reached validated Annex 11 compliance for a pharma manufacturer in 12 weeks.
GovernanceGAMP 5Annex 11Vanta
Country · CH
first pass
Telemedicine
ISO 27001 and DTAC for a telemedicine platform
Achieved ISO 27001 and NHS DTAC assurance at first assessment for a telemedicine platform.
ISO 27001NHS DTACVantaGovernance
Country · UK
11 weeks
Insurance
DORA readiness for an insurer
Reached DORA operational-resilience readiness in 11 weeks for an insurer.
GovernanceDORAResilience testing
Country · DE
R155
Automotive
Threat modelling a connected vehicle
Mapped and mitigated attack paths for a UNECE R155-regulated connected vehicle.
STRIDEISO 21434UNECE R155Threat modelling
Country · DE
9
Biotech
Threat modelling a biotech lab-data platform
Identified nine design-level risks in a biotech's lab-data platform before build.
STRIDEAttack treesThreat modelling
Country · UK
0 criticals
Logistics
Threat modelling a logistics partner API
Hardened a logistics partner API against abuse before third-party onboarding.
STRIDEOAuth2Threat modelling
Country · NL
Who we are
About usBritonOne Technology is a full-cycle engineering company that builds and operates production software for regulated estates. Since 2017, we have shipped programmes that clear audit on the first pass across banking, insurance, wealth, healthcare, and biotech. Our teams pair deep domain knowledge with disciplined engineering, treating compliance, security, and resilience as first-class deliverables. From architecture through to live operations, we stay accountable for the systems we build, measuring success by uptime, audit outcomes, and defensible business results.
60+Senior engineers across UK and EU
Why choose us
Engineer experience, average9+ yrs
Specialist replacement window48h
Code and IP ownership, day one100%
Surprise invoicesZero
Why teams choose BritonOne Technology
Four reasons enterprise buyers come back
We don't compete on lowest day-rate. We compete on shipped outcomes inside environments that have to clear audit.
Senior-only delivery
Every engineer on every engagement is at least senior, typically eight to fifteen years deep in their craft. No bench rotations, no junior pyramid hidden behind a glossy proposal, no bait-and-switch after contract signature. The architect who scoped your engagement is the same person committing code by week three.
Audit-ready by default
FCA, PRA, EBA, BaFin, FINMA, HIPAA, SOC 2 Type II: every framework we work under is treated as a design constraint from day one, not a final-stage gate. Evidence trails, model-risk packs, change-control artefacts, and pen-test reports ship alongside the code, ready for second-line review without a remediation sprint.
Anti-drift delivery discipline
Small pods of three to seven engineers, each with a named delivery lead who owns scope, schedule, and outcomes from kickoff to hand-off, never a faceless team you have to chase for an answer. Weekly demos run against the signed scope, frequent verification gates catch regressions early, and quarterly outcome reviews measure real progress against the original business case rather than a moving target. Together those rituals catch scope drift before it has any chance to compound, so programmes that should take six months don't quietly stretch into eighteen, budgets stay anchored to what was agreed, and every milestone ships with a written, testable definition of done that both sides sign off before we move on.
Long-tail support beyond hand-off
We don't disappear the moment the engagement closes. Managed services, hypercare windows, named on-call rotations, or quarterly health checks: pick the depth that matches your operational risk profile. About seventy percent of clients return for a second programme, usually because the team that shipped the first one is still on the other end of the page.
Client Satisfaction Reviews
Words from the teams we have shipped with.
Anonymous under MNDA. Each quote is from a senior buyer who owned the engagement end to end across the services catalogue.
One Team Replacing Two Vendors
“BritonOne Technology replaced two of our incumbent vendors with one team. Faster sprints, fewer status meetings, more code shipped per week.”
VP EngineeringTier-1 European retail bank
Common pre-engagement questions
Things buyers ask before picking the first service
