DEFENTECH LTD tests, monitors and defends the systems small and mid-sized businesses depend on — so a single exposed port or unpatched server doesn't become the reason the business stops trading.
Every engagement starts by finding out what's actually reachable from the outside — then closing it, watching it, and knowing what to do the day something gets through anyway.
Manual testing of your network, applications and cloud environment, reported in plain language with fixes ranked by real business risk.
Learn more →Continuous monitoring of endpoints and network traffic, with a human analyst — not just an alert — deciding what needs action.
Learn more →A direct line for when something has already happened: containment, investigation, and a plan to get trading again safely.
Learn more →Hands-on support toward Cyber Essentials, Cyber Essentials Plus, and ISO 27001, built around evidence you can actually produce.
Learn more →Hardening for Microsoft 365, Google Workspace and cloud infrastructure — the entry point for most of the incidents we see.
Learn more →Short, practical sessions and simulated phishing that build habits — because most breaches start with a person, not a firewall.
Learn more →An illustrative map of a typical small-business environment — the kind of layer-by-layer view we build for every client, with real findings in place of these examples.
Security isn't a document you file away. We run this cycle continuously so your defences move with your business.
Map every system, device and account that could be an entry point, and rank them by what's actually at stake.
Close the gaps that matter first — misconfigurations, weak access controls, unpatched software — with your team, not around it.
Watch traffic and endpoints around the clock, so unusual activity is caught in minutes, not discovered months later.
When something does happen, contain it fast and feed what we learn straight back into step one.
Findings written for whoever runs the business, not just whoever runs the servers — with cost and risk laid out clearly.
No surprise invoices after an incident. Assessments and monitoring are quoted up front, scoped to your environment.
You speak to the same team who knows your systems, every time — from the first assessment onward.
Illustrative before/after from a typical engagement — not DEFENTECH client data.
Book a no-obligation call, or send details of your setup and we'll come back with next steps.