API & Application Security
APIs are the front door to your organisation, which makes them the most attractive target. We secure that surface end to end — identity, threat protection, runtime posture and secure delivery — so you can be open without being vulnerable.
What this means in practice
As data moves to the cloud and more of your consumers and producers become automated, the attack surface stops being your perimeter and becomes your APIs. Securing them is not a single product purchase — it is identity done correctly, threat protection at runtime, continuous discovery of the APIs you forgot you had, and security built into how APIs are delivered.
We implement OAuth 2.0, OpenID Connect, JWT and mutual TLS the way the standards intend — including the hard parts: token exchange (RFC 8693), FAPI profiles for financial-grade APIs, and the cache, fault and claim-handling edge cases that turn a 'working' auth flow into a quiet breach. We deploy and tune dedicated API-security platforms such as Salt Security for behavioural threat detection across both APIs and event streams.
For payments and regulated workloads we bring hands-on experience with the security controls that actually get audited: HMAC request signing and the UTF-8/encoding pitfalls that break it, message-level integrity, and PCI-DSS-aligned design.
What we deliver
Six concrete workstreams. Engage the whole capability or just the piece you need — every one ships documented and handed over.
API threat protection
Schema enforcement, rate-limiting and quota strategy, injection and abuse protection, and bot/credential-stuffing defence at the gateway and runtime.
Identity & access
OAuth 2.0, OIDC, JWT and mTLS done to spec — including token exchange, FAPI, and consent and scope models for partner and open-API programmes.
API discovery & posture
Continuous discovery of shadow and zombie APIs, posture scoring against OWASP API Security Top 10, and prioritised remediation.
Runtime threat detection
Behavioural API-security platforms (e.g. Salt) tuned to your traffic, extending protection to event streams as well as request/response APIs.
Payments-grade integrity
HMAC signing, message-level integrity, and the encoding/serialisation discipline that keeps signatures valid across systems.
Secure delivery (DevSecOps)
Threat modelling, secrets management, SAST/DAST in the pipeline, and security review gates that don't stall delivery.
What you walk away with
OWASP-aligned
Posture measured against the OWASP API Security Top 10, not vibes.
Runtime detection
Behavioural threat detection across APIs and event streams.
-ready by design
Payments-grade integrity controls that survive a real assessment.
Get a free API & AI attack-surface review.
See your estate the way an attacker does. In a 45-minute working session with our principal engineers, we map your integration estate and threat surface and leave you with a prioritised, costed next step — whether or not you engage us.
- Your API, AI and event-stream surface mapped
- Top risks ranked against OWASP API & LLM Top 10
- A costed 90-day remediation & build plan