Browser Security Service
Most modern cyber attacks don’t break through a firewall, they happen directly inside the browser.
Phishing pages, fake Microsoft 365 logins, malicious scripts and uncontrolled AI usage all sit within everyday web sessions. Traditional security tools were never designed to control behaviour at that level.
Closing the Security Gap Inside the Browser
Optimising IT’s Browser Security Service, powered by DefensX, introduces a secure enterprise browser layer that protects users where today’s threats operate. By applying Remote Browser Isolation and Zero Trust browser security directly within the browser, the platform prevents credential theft, isolates risky activity and provides visibility over emerging risks such as Shadow AI usage and unsafe AI prompts.
The result is a secure browser workspace designed for modern organisations, strengthening your existing cyber security controls without disrupting how your team works.
Why Browser-Level Security Is Needed
You may already have firewalls, endpoint protection, email security and DNS filtering in place – and while these still remain essential, attackers have adapted.
Modern phishing attacks replicate legitimate login pages almost perfectly. Session hijacking and SaaS-based attacks bypass traditional domain filtering. At the same time, employees are increasingly using public AI tools without visibility or governance.
If your protection stops at the network or device, then there is a gap.
A secure browser security platform closes that gap by analysing behaviour inside the browsing session itself – not just blocking known malicious websites.
Secure Enterprise Browser Protection
Not every organisation operates within a fully secured Microsoft Modern Workplace environment with advanced licensing and identity controls.
Many businesses rely on standard Microsoft 365, traditional web filtering and endpoint antivirus. While effective, these controls do not provide behaviour-based protection inside the browser session.
DefensX delivers advanced browser security without requiring a complete overhaul of your security stack. It integrates with the browsers your team already use and strengthens protection where today’s threats operate.
Phishing-Resistant Protection
Credential theft remains one of the most common causes of breaches.
DefensX introduces a phishing defence browser service that analyses login behaviour before credentials are submitted. If an authentication flow appears suspicious, even when the website looks legitimate, it is blocked. This significantly reduces the risk of compromised Microsoft 365 accounts, business email compromise and lateral movement within your cloud environment.
It protects the point attackers now target most aggressively: the login page.
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B Corp IT SupportSee DefensX in Action
DefensX offers a short five-minute demo that clearly shows how the platform prevents phishing, isolates risky browsing sessions and provides visibility into AI usage.
If you would like to understand how browser-level protection could strengthen your security posture, speak to our team and we’ll guide you through whether it’s the right fit for your environment.
Remote Browser Isolation
Some web content is simply too risky to trust. DefensX can execute high-risk browsing sessions in a secure cloud container, ensuring malicious code never reaches the device.
Users continue working as normal, but the threat remains isolated. It’s protection without friction.
CEO and finance team impersonation
Supplier payment redirection
Lateral phishing within your organisation
This is critical for reducing the financial and reputational impact of any email-based attacks.
Shadow AI Detection and Control
AI adoption is accelerating across every sector.
Without oversight, sensitive information can be uploaded into public AI platforms, creating compliance and data protection risks. DefensX provides visibility over AI tool usage and allows policy-based restrictions where necessary.
This enables businesses to adopt AI productively, without losing control of their data.
Designed to Strengthen Your Existing Security
Our secure browser security service does not replace your current tools, it works alongside Microsoft 365 security, endpoint protection, firewalls and email controls to protect the browser session itself.
We introduced DefensX because clients were asking for stronger phishing-resistant browsing, better web protection for hybrid teams and a way to address Shadow AI risk. It provides a practical, deployable solution without adding unnecessary complexity.
The result is a managed browser security service that enhances protection without adding unnecessary complexity to your environment.
FAQs
FAQs
What is a browser security service?
A browser security service protects users directly within their web browser, analysing behaviour and interactions rather than relying solely on network filtering. This allows organisations to detect phishing attacks, isolate risky content and prevent data exposure during web sessions.
