
Cybersecurity is part of the product
Cybersecurity for web and mobile applications is the set of controls that keep other people’s data and your service intact. SJ Technologies is a UK IT agency. We design those controls into the build: authentication, authorisation, secrets, logging, and the boring configuration that stops the usual breaches.
A pentest is useful when there is a system to test. It is not a substitute for building the app as if someone will try the obvious attacks, because they will.
The failures we see on real briefs
Standing admin accounts, tokens in the repository, APIs that trust the client, file uploads with no type checks, and logs that contain passwords. Cloud defaults left open. Mobile apps that store session material as if the phone were a safe.
OWASP lists are a starting map, not a compliance certificate. We use them to structure the work, then we test the journeys that matter on this product.
Least privilege for people and for services. Secrets in a manager, rotated, never in git. Dependencies updated on a schedule you can staff. An incident path: who is called, what is turned off, who is told.
Web, mobile and the shared backend
Most mobile risk is the API. Most web risk is the same API plus the session in the browser. Treat them as one system. Store listings, certificate pinning and jailbreak detection are extras; they do not help if the backend will hand over another user’s records.
Penetration testing belongs after the controls exist, as an independent check. We can arrange or work alongside that. We will not pretend a scan of a staging site is a security programme.
How we take security work
On a build, security is in the scope. On an existing product, we start with a review of identity, data flows and the obvious holes, then a written list of what to fix first. You keep the findings and the code.
If you need cybersecurity as part of web or mobile delivery, say what data you hold and who can reach it. We will put controls in the software, not in a poster.
Work with SJ Technologies
This article is about cybersecurity. If that is the work you need, we can scope it in writing as a UK IT agency.


