Security engineering for systems that hold value.
BitAzure builds and hardens the security of financial and blockchain platforms: secure architecture, authentication and access control, encryption and key management with HSM, KMS and MPC, API and wallet protection, monitoring and detection, secure development practices and preparation for independent audits.
- Secure architecture, API, wallet and smart-contract security
- MFA, SSO, RBAC and encryption at rest and in transit
- Key management with HSM, KMS and MPC
- Threat detection, incident response and audit preparation
What is cybersecurity engineering?
Cybersecurity engineering is the discipline of designing, building and operating systems so that they resist compromise, limit the damage of any breach and produce the evidence needed to detect and investigate attacks. In financial and blockchain systems it spans architecture and threat modelling, identity and access control, cryptographic key management, application and API security, infrastructure hardening, monitoring and incident response, and the secure development practices that keep new code from reintroducing risk.
BitAzure provides security as an engineering service rather than a report. We design secure architectures for exchanges, wallets, custody and payment platforms, implement authentication, authorisation and key management, review and harden smart contracts and APIs, build detection and response capabilities, and prepare organisations for penetration tests and audits against frameworks such as SOC 2 and ISO 27001.
We do not issue certifications or independent audit opinions. Our role is to make systems defensible and well documented so that independent testers and auditors can do their work, and so that your team can respond effectively when something goes wrong.
Cybersecurity capabilities
Services span design, implementation and operations, and can be engaged as a full programme or targeted at a specific system.
Secure Architecture & Threat Modelling
- Secure architecture reviews and reference designs
- Threat modelling with STRIDE-style analysis and attack trees
- Trust boundaries, segmentation and zero-trust network design
- Security requirements for new products and integrations
- Third-party and supply-chain risk assessment
Identity, Access & Authentication
- Authentication with SSO, OpenID Connect and passwordless options
- MFA with hardware keys, TOTP and risk-based step-up
- RBAC and attribute-based authorisation with least privilege
- Session management, device binding and anomaly-based revocation
- Privileged access management for operators
Cryptography & Key Management
- Encryption at rest and in transit with managed key hierarchies
- Key management using HSM, cloud KMS and MPC
- Multisig and threshold signing policies for treasury and custody
- Key rotation, escrow and recovery procedures
- Secrets management and certificate lifecycle
Application, API, Wallet & Contract Security
- API security: signing, scopes, rate limits, input validation and WAF
- Wallet security: hot, warm and cold segregation, withdrawal policies and address controls
- Smart-contract security reviews, invariant testing and audit preparation
- Secure coding standards and framework hardening
- Dependency and secrets scanning across repositories
Monitoring, Detection & Response
- Security monitoring with SIEM integration and correlation rules
- Threat detection for infrastructure, applications and on-chain activity
- Incident response plans, playbooks and tabletop exercises
- Forensic readiness: logging, retention and chain of custody
- On-chain incident tooling: pause, freeze and communication procedures
Secure SDLC & Assurance
- Secure SDLC: design reviews, code review gates and CI security checks
- Penetration-test coordination, scoping and remediation tracking
- Audit preparation and readiness assessments for SOC 2 and ISO 27001
- Policy, control mapping and evidence collection support
- Security training and champions programmes for engineering teams
Reference security architecture
Defence in depth from the edge to the keys: each layer authenticates, authorises and logs independently, while a monitoring lane observes every layer and a secure pipeline governs how code reaches production.
Hover or focus a component to see its role in the architecture.
- Edge Protection (WAF · DDoS · bot control): Filters volumetric and application-layer attacks before traffic reaches the platform.
- Identity Provider (SSO · MFA · device policy): Federated authentication with MFA, risk-based step-up and session policies for users and operators.
- Secure SDLC Pipeline (Review · scan · sign): Threat-model reviews, static and dependency scanning, and signed artifacts gating every release.
- API Gateway (AuthZ · RBAC · rate limits): Validates tokens, enforces RBAC and scopes, applies rate limits and schema validation per endpoint.
- Application Services (Trading · wallet · contracts): Domain logic with secure coding standards, withdrawal policies and contract interaction safeguards.
- Data Stores (Encrypted at rest): Envelope-encrypted databases and storage with field-level encryption for sensitive records.
- Key Management (HSM · KMS · MPC): Signing and encryption keys held in HSM, cloud KMS or MPC infrastructure with policy-controlled use.
- SIEM & Monitoring (Correlation · alerts): Aggregates logs from every layer, correlates events and raises prioritised alerts.
- Incident Response (Playbooks · containment): Defined roles, playbooks and containment actions, rehearsed through tabletop exercises.
Edge & identity
- WAF and DDoS protection
- SSO and MFA
- Device and session policy
Application
- Gateway authorisation and RBAC
- Secure coding and API controls
- Wallet and contract safeguards
Data & keys
- Encryption at rest and in transit
- HSM, KMS and MPC
- Rotation and recovery
Assurance
- SIEM and detection
- Incident response
- Secure SDLC and audit preparation
Where security engineering is applied
Exchange and custody platforms
Hot and cold wallet segregation, withdrawal policies, signing infrastructure and monitoring.
Payment and fintech products
Strong customer authentication, tokenised data and controls designed to support payment-industry requirements.
DeFi protocols and smart contracts
Threat models, invariant tests, audit preparation and on-chain incident procedures.
Public and partner APIs
Signing, scopes, abuse detection and WAF policies for high-value programmatic access.
Enterprise identity and access
SSO, MFA, RBAC and privileged access for internal platforms and operators.
Audit and pen-test readiness
Control mapping, evidence and remediation support ahead of independent assessments.
Why teams engage BitAzure for security
Engineers, not only assessors
Findings come with implementation: we build the controls, not just the recommendations.
Financial and blockchain depth
Experience with custody, signing, contracts and trading systems where mistakes are irreversible.
Defence in depth
Independent controls at edge, identity, application, data and key layers so no single failure is fatal.
Detection you can act on
Correlated alerts with playbooks, tuned to reduce noise and shorten time to containment.
Audit-ready evidence
Controls are documented and logged in ways auditors and testers can verify without rework.
Security in the delivery flow
Reviews, scanning and gates inside CI/CD so security keeps pace with releases.
Technologies we use in security engineering
AWS
InfrastructureEKS, RDS, KMS, CloudHSM and multi-region deployments.
Azure
InfrastructureAKS, Key Vault and enterprise identity integration.
Kubernetes
InfrastructureAutoscaling, rolling deployments and workload isolation.
Terraform
InfrastructureInfrastructure as code with reviewable change plans.
HashiCorp Vault
Prometheus / Grafana
InfrastructureMetrics, dashboards and alerting for every service.
PostgreSQL
DatabaseTransactional ledgers, ledgers-of-record and analytical workloads.
Solidity
BlockchainEVM smart contracts: tokens, DeFi protocols, governance, vesting.
Foundry / Hardhat
BlockchainTesting, fuzzing, gas profiling and deployment pipelines.
Go
BackendConcurrent network services, relayers and infrastructure daemons.
Rust
BackendMemory-safe, low-latency engines, on-chain programs and tooling.
TypeScript
FrontendStrict typing across the entire stack, client to contracts tooling.
How we deliver security engagements
Every engagement follows a documented, milestone-driven path from discovery to continuous development.
- 01
Scoping and threat modelling
Assets, adversaries, trust boundaries and regulatory drivers are mapped to produce a prioritised risk picture.
- 02
Architecture and control design
Identity, key management, network, API and wallet controls are designed with clear ownership and evidence requirements.
- 03
Implementation and hardening
Controls are built or configured, from MFA and RBAC to KMS hierarchies and WAF policies, with automated verification.
- 04
Detection and response build-out
Logging, SIEM rules, alert routing, playbooks and tabletop exercises establish operational readiness.
- 05
Testing and independent assessment
Internal testing, penetration-test coordination and remediation tracking, plus audit preparation where required.
- 06
Continuous security operations
Ongoing reviews, vulnerability management, secure SDLC support and periodic re-assessment.
How we practise security ourselves
Least privilege everywhere
Scoped, time-bound access for our engineers with logged sessions and no shared credentials.
Separation of duties
Design, implementation and review responsibilities are split so no individual can push unchecked changes.
Evidence-based controls
Every control has a test, a log and an owner, so it can be verified rather than assumed.
Confidential handling
Client architecture, keys and findings are handled under strict access, encryption and retention rules.
Responsible disclosure
Vulnerabilities found during engagements are reported privately with remediation guidance and timelines.
No false assurance
We describe what has been tested and what has not, and we never present readiness work as certification.
We coordinate independent third-party audits on request and never claim an audit, certification or compliance status unless it has actually been obtained.
What to decide before a security programme
Threat model first
Controls without a threat model are guesswork; agree who the adversaries are and what they want before choosing tools.
Key custody trade-offs
HSM, MPC and multisig differ in latency, operational burden and failure modes; the right choice depends on transaction patterns and governance.
Usability of MFA and access
Controls that frustrate operators get bypassed. Design authentication and approval flows with real workflows in mind.
Logging scope and cost
Comprehensive logging supports detection and forensics but carries storage, privacy and cost implications that need policy.
Audit versus security
Frameworks such as SOC 2 or ISO 27001 structure controls but do not guarantee safety; engineering rigour must go beyond checklists.
Incident readiness
Assume compromise will happen. Playbooks, communication plans and rehearsals determine the size of the impact.
Cybersecurity questions
No. Certification and attestation are issued by independent auditors. We prepare organisations by designing controls, collecting evidence and closing gaps so that an audit can proceed efficiently, and we describe this work as readiness or audit preparation.
Need to harden a platform that holds value?
Tell us what you run and what worries you. We will propose a threat-model-driven plan with concrete controls and timelines.