Where the work is concentrated.
Seven sectors where Yinkozi's depth has compounded over thirteen years. Multi-year engagements with tier-1 customers across Africa, the Middle East, Europe, and North America.
Banking
Tier-1 banks and full-stack security audits.
Multi-year engagements with tier-1 banks across Africa, Europe, and North America. Hardware-to-process security audits, runtime instrumentation, application security at portfolio scale, threat-model facilitation. Where security teams operate at organisation-wide scope, we operate as the embedded specialist team.
- — Continuous offensive security across the customer's full surface
- — Architecture review for new platforms and migrations
- — Source code review of security-critical paths
- — Hardware-bound identity and signing infrastructure
Payments
Acquirers, processors, mobile money, agent banking.
Continent-scale mobile-money platforms, acquirer and scheme-adjacent infrastructure, payment-terminal fleets, agent-banking networks. The systems where security failure has settlement consequences and the threat surface includes operator-staff insiders, agent collusion, and customer-side overlay attack.
- — Full-platform mobile-money pentest
- — Payment-network end-to-end assessment
- — Terminal and POS hardware-lab review
- — Agent-banking threat modelling
Government
Sovereign deployments, voting, identity, citizen services.
National-scale identity systems, voting infrastructure, sovereign-deployment-only environments. Where cloud SaaS cannot fit, where the threat model includes other sovereign actors, and where the procurement cycle assumes an engineering vendor — not a body-shop pentest firm.
- — DevSecOps engineering at national scale
- — Voting and election-infrastructure assessment
- — National-identity and KYC platform review
- — Sovereign cryptographic-protocol design
Energy
Oil & gas, generation, refining, pipeline operators.
Critical-infrastructure operators with SCADA, ICS, and vendor-supplied control systems. Where active-scanning is forbidden, where lab replication is required, and where the cost of being wrong is measured in physical damage.
- — Single-site OT assessment with hardware-lab replication
- — Portfolio-wide review across multi-site operators
- — IT/OT boundary architecture review
- — Vendor and supply-chain integrity review
Telecommunications
Mobile network operators, mobile money, agent networks.
MNOs running mobile money at scale, agent-network security, signalling and core-infrastructure surfaces, device-fleet management. Sub-Saharan and Middle East regional concentration, with cross-border partner integrations.
- — Mobile-money platform security
- — Agent-network and KYC pipeline review
- — Core-infrastructure and signalling pentest
- — Fleet-scale device management security
Blockchain
Smart contracts, bridges, validator sets, consensus clients.
Layer-1 chains, layer-2 rollups, DeFi protocols, cross-chain bridges, threshold-signature custody, sovereign-issued tokenisation. Where the security boundary is part-cryptographic, part-economic, and part-protocol — and where the cost of getting it wrong is settlement-final.
- — Smart-contract review across Solidity / Vyper / Move / ink!
- — Bridge and oracle security analysis
- — Validator-set and consensus-client review
- — Economic-model and game-theoretic review
Software companies
Fintech, dev-tools, AI platforms, SaaS at scale.
Software companies whose own product is the system under test — fintech platforms, developer-tools and infrastructure-SaaS, AI / LLM platforms, identity providers. Where the customer is also the engineering team and the engagement model is embedded review alongside their security organisation.
- — Continuing security review embedded with engineering
- — AI / LLM platform security assessment
- — API and developer-platform security
- — Customer-facing SDK and library audit