What is Application Security? — UK Software Development Guide
Direct Answer
Application security (AppSec) is the practice of designing, building, and testing software to protect against security threats and vulnerabilities. It encompasses: secure coding practices, security testing (SAST, DAST, penetration testing), threat modelling, access control, encryption, and security code reviews.
Application-security in the UK
Application security has specific UK regulatory significance. UK GDPR Article 32 requires "appropriate technical and organisational measures" — the ICO interprets this as including application-level security controls such as encryption, access controls, and regular security testing. Cyber Essentials covers five baseline technical controls. Cyber Essentials Plus requires external security verification including penetration testing. The NCSC (National Cyber Security Centre) publishes Secure by Design guidance. For regulated sectors: DTAC Domain 3 (HealthTech), FCA operational resilience requirements (FinTech), and GDS security standards (GovTech) all mandate application security practices.
Related Glossary Terms
API
API explained for UK software developers and business owners. An API (Application Programming Interface) is a defined set of rules and protocols that allows different software system... UK context, examples, and related services.
UK GDPR
UK GDPR explained for UK software developers and business owners. UK GDPR (UK General Data Protection Regulation) is the post-Brexit version of EU GDPR, retained into UK law via the Euro... UK context, examples, and related services.
Cyber Essentials
Cyber Essentials explained for UK software developers and business owners. Cyber Essentials is a UK government-backed cybersecurity certification scheme developed by NCSC (National Cyber Security... UK context, examples, and related services.
DEVOPS
DevOps explained for UK software developers and business owners. DevOps is a set of practices, principles, and culture that combines software development (Dev) and IT operations (Ops) t... UK context, examples, and related services.
Penetration-testing
Penetration Testing explained for UK software developers. Penetration testing (pen testing) is a simulated cyber attack against a software system, network, or application to disc... UK context and related services.
Terraform
Terraform explained for UK software developers. Terraform is an open-source Infrastructure as Code (IaC) tool by HashiCorp that allows you to define, provision, and man...
Get Expert Advice on Application-security
Speak with our UK software development experts about Application-security. Free consultation, transparent pricing, no obligation.