# Application security that's built in, not bolted on > Threat modeling, secure code review, vulnerability assessments, access control and privacy-by-design engineering for PIPEDA and Quebec Law 25. Source: https://npcoding.ca/services/application-security/ Security shouldn't be a final checklist — it's the foundation. We bring a DevSecOps mindset to every project, with threat modeling, secure coding, automated scanning and manual review, so risks are caught before they reach production. Part of the [QA & Release Assurance](https://npcoding.ca/services/qa-testing/) capability. ## Overview Data is often your most valuable asset. We protect it with encryption, least-privilege access, secure authentication and continuous monitoring — and we design with Canadian privacy obligations in mind, including PIPEDA, Quebec's Law 25 and, for health information, provincial laws such as Ontario's PHIPA. Already have an application in production, perhaps one built quickly with AI tools? We run security assessments that combine automated vulnerability scanning with manual review, then prioritize fixes by real business risk and help your team remediate them. It's a transparent, ongoing partnership: we monitor, patch and keep you ready for audits. ## Is this the right service? Choose Application Security when: - You need to know how the software could be attacked or misused, and what to fix first - Customers, auditors or a partner are asking for security evidence - An application built quickly, by any team or tool, is about to handle real data Consider instead: - [QA & Release Assurance](https://npcoding.ca/services/qa-testing/) when the question is whether features work correctly and a release is ready ## What's included in application security - **Threat modeling & secure architecture:** Identify how your system could be attacked and design controls before code is written. - **Secure code review:** Manual and automated review against OWASP guidance, with clear, prioritized findings. - **Vulnerability assessments:** Automated scanning plus manual testing, and support for independent penetration tests. - **Authentication & access control:** SSO, multi-factor authentication and role-based permissions done right. - **Privacy engineering:** Privacy-by-default settings, consent flows, data minimization and breach-readiness for PIPEDA and Law 25. - **Monitoring & incident readiness:** Logging, alerting and response playbooks so incidents are detected and contained fast. ## Findings with evidence, not scanner noise. An illustrative finding from a security review. Each one states the risk in business terms, shows how to reproduce it and is re-tested after the fix. The application and the finding are invented. (Illustrative example.) **Finding · Invoice records readable by other customers**: High risk: fix before release What we found: - Changing the invoice ID in a request returned another customer's invoice - The API checked that the user was signed in, not that the invoice was theirs Why it matters: - Personal and financial data exposed across customers - A reportable privacy incident if exploited Fix: - Authorize every record lookup against the signed-in account - Add an automated test that tries other customers' IDs Verification: - Re-tested after the fix - The new test runs in the pipeline, so the issue can't quietly return ## How AI assists security work. Where AI helps: - Scanning code and dependencies, and grouping related findings - Drafting threat models from architecture documents for review - Suggesting fixes for common vulnerability patterns - Summarizing logs during an incident investigation What our experts own: - Prioritizing findings by real business risk - Manual review and testing of critical paths - Approving every remediation change - Evidence for auditors and customers ## How NPCoding delivers it 1. **Assess:** Review architecture, code, infrastructure and data flows to find real risks. 2. **Prioritize:** Rank findings by likelihood and business impact — not by scanner noise. 3. **Remediate:** Fix issues with your team, or for you, with secure patterns that prevent repeats. 4. **Verify:** Re-test every fix and document the evidence for auditors and customers. 5. **Monitor:** Continuous scanning, dependency updates and alerting keep you protected. ## Connected capabilities - [QA & Release Assurance](https://npcoding.ca/services/qa-testing/): Security checks join the QA suite, so a fixed vulnerability stays fixed in later releases. - [DevOps & Managed Operations](https://npcoding.ca/services/devops-managed-operations/): Secrets management, access reviews and dependency updates are built into the delivery pipeline. ## How we build with AI Security reviews cover code built either way. If AI tools must not process your code at all, choose the private environment. - [Private / Local AI Engineering](https://npcoding.ca/services/private-ai-engineering/): AI-powered software delivery in a controlled processing environment. - [Claude Code & Codex Engineering](https://npcoding.ca/services/claude-code-codex-engineering/): AI-accelerated delivery with Claude Code and OpenAI Codex, directed by experienced engineers. ## Why NPCoding - **Fewer surprises in production:** Vulnerabilities are found in development, where they're cheapest to fix. - **Compliance with confidence:** Technical controls mapped to PIPEDA, Law 25 and industry expectations. - **Long-term partnership:** Ongoing monitoring and patching instead of a one-off report that gathers dust. ## Tools and technologies OWASP ASVS, OWASP API Top 10, SAST / DAST, Dependency scanning, OAuth 2.0 / OIDC, MFA, Encryption at rest & in transit, Cloud security (AWS / GCP) ## Industries - [Finance](https://npcoding.ca/industries/finance/) - [Healthcare](https://npcoding.ca/industries/healthcare/) - [eCommerce](https://npcoding.ca/industries/e-commerce/) - [Startups](https://npcoding.ca/industries/startups/) ## Related work - [OverCat: a Canadian PR company's website with a private media hub for suppliers](https://npcoding.ca/portfolio/overcat/): An English corporate website for OverCat, a PR company located in Canada — with a password-protected Media Hub where each supplier downloads its own images, campaign briefs, products and files. ## Frequently asked questions ### What's the difference between vulnerability scanning and penetration testing? Vulnerability scanning uses automated tools to find known weaknesses quickly and repeatedly. Penetration testing is a manual, goal-driven exercise where a tester chains weaknesses together the way a real attacker would. Most organizations need continuous scanning plus periodic penetration tests. ### Can you help us comply with PIPEDA and Quebec's Law 25? We implement the technical side: privacy-by-default settings, consent capture, access controls, encryption, audit logs, data retention and breach-detection capabilities. For legal interpretation, we work alongside your privacy counsel. ### Can you assess an application another team built? Yes. We regularly review codebases we didn't write. You receive a prioritized report with evidence and remediation guidance, and we can implement the fixes if you'd like. ### Can you review code written with AI tools? Yes, and it gets the same review as any other code: authentication and authorization, input handling, secrets, dependencies and data exposure. Code produced quickly, by people or tools, tends to cut corners in exactly those places. ### What does DevSecOps mean in practice? Security checks run automatically in the delivery pipeline — dependency and code scanning on every change, secrets detection, and security reviews on risky features — so security keeps pace with development instead of slowing it down. Request a security review: https://npcoding.ca/contact/?topic=assess&service=security#enquiry --- NPCoding · AI-powered software & app development · Toronto, Canada · support@npcoding.com · https://npcoding.ca/contact/