Cyber Risk & Architecture Advisory
Security retrofitted into a system after design is more expensive, less effective, and more likely to fail than security integrated from the outset. Yet this remains the default pattern: systems are designed for functionality, tested for security later, and then hardened against threats that should have been addressed in the architecture.
London Strategy Centre's cyber risk and architecture advisory services ensure that security is considered throughout the design and operation of digital systems - not appended as a final review.
Retrofitted security creates structural weakness
When security is treated as a testing phase rather than a design principle, the resulting controls are compensatory. They mitigate threats at the surface without addressing architectural vulnerabilities that cannot be easily resolved after deployment. Network segmentation added late, access controls bolted onto an architecture that was not designed for them, encryption layered over data flows that were not mapped, these are symptoms of an approach that treats security as an afterthought. The cost is measurable: in rework, in residual risk, in the ongoing complexity of maintaining controls that the architecture was never designed to support.
Five advisory disciplines for secure system design
LSC's cyber risk and architecture advisory services address security at the design stage and maintain assurance as systems evolve.
Cyber Risk Assessment and Threat Modelling
Analyses potential attack scenarios to identify how systems could be compromised. This is not theoretical - threat models are built against the specific architecture, data flows, and operational context of the system under review. The output identifies realistic attack paths and informs specific design decisions that reduce exposure.
Secure Architecture Reviews
Examine system designs to ensure appropriate security controls are implemented at every layer, network, application, data, and identity. Reviews assess whether the proposed architecture supports the organisation's security requirements and identify structural weaknesses before they are built into production systems.
Cyber Risk Registers and Risk Treatment
provide a structured approach to documenting, prioritising, and managing cyber risks. Risk registers are designed to support governance and decision-making, not to exist as static documents. Each risk is mapped to treatment options, owners, and timelines, creating accountability and visibility for leadership teams.
Security Design Authority
provides independent oversight of security decisions within large programmes or digital platforms. The SDA function ensures that security architecture decisions are consistent, proportionate, and aligned with the organisation's risk appetite, particularly valuable in complex programmes with multiple delivery teams and evolving requirements.
Digital Platform Cyber Assurance
addresses the ongoing security requirements of connected systems and platforms. As systems evolve, through updates, integrations, and scaling - security controls, governance processes, and technical protections must evolve with them. Regular assurance reviews ensure that platform security remains effective as the environment changes.
Designing security in is a decision about cost, risk, and capability
The argument for integrating security into architecture is not ideological. It is economic and operational. Addressing a vulnerability at the design stage costs a fraction of addressing it after deployment. Architectures designed with security in mind require fewer compensatory controls, are easier to maintain, and produce better evidence for compliance and assurance purposes. Organisations building new platforms, migrating to cloud environments, or integrating connected systems face these design decisions now. The choices made at the architecture stage determine the cost and effectiveness of security for the lifetime of the system.
Who this is for
These services are designed for organisations designing or procuring new digital platforms, enterprises migrating to cloud or hybrid environments, programme teams requiring security architecture oversight across complex delivery, digital platform owners managing evolving connected systems, and leadership teams seeking structured cyber risk governance with clear accountability.
Frequently Asked Questions
As early as possible. Security requirements are significantly cheaper to address at the design stage than after a system is built. LSC recommends engaging security advisory during the concept and requirements phase, before architecture decisions are made.
A TRA is a formal analysis of the threats to a system, the likelihood of those threats materialising, and the potential impact. TRAs are typically required at governance gates in defence and government programmes.
Yes. LSC conducts independent secure architecture reviews of existing system designs, identifying security weaknesses and providing structured recommendations for improvement.
Yes. LSC delivers threat modelling workshops and structured threat analysis for software development teams, integrating with agile and DevSecOps environments.