Malicious links blocked at the moment of click. Even after delivery.
Attackers activate malicious payloads after emails pass initial scans. IP Four rewrites every link and checks it at click time against live threat intelligence, blocking malicious URLs whether they were dangerous at delivery or became dangerous afterwards.
Every link checked, every click protected, every time.
From URL rewriting to retroactive remediation, our link scanning capability closes the gap that delivery-time scanning leaves open.
URL Rewriting and Click-Time Scanning
Every link in every inbound email is rewritten through our secure proxy. At the moment of click, the destination URL is checked against live threat intelligence. If it has turned malicious since delivery, the click is blocked.
Live Threat Intelligence Integration
URL reputation is checked against multiple live threat intelligence feeds updated in real time. Known malicious domains, newly registered phishing sites, and compromised legitimate sites are all covered.
Deep URL Inspection and Redirect Following
Shortened URLs, redirect chains, and obfuscated links are fully unwound before reputation checking. Attackers cannot hide malicious destinations behind multiple redirect hops or URL shorteners.
Credential Harvesting Page Detection
Landing pages are rendered and analysed for credential harvesting characteristics. Fake Microsoft 365, banking, and corporate login pages are identified and blocked before credentials are entered.
URL Click Analytics and Reporting
Full visibility into which users are clicking which links, when, and from which devices. Identifies users who regularly engage with suspicious content and need additional awareness training.
Retroactive URL Remediation
When a URL is identified as malicious after delivery, all emails containing that link across your entire organisation are retroactively remediated. The link is neutralised in every mailbox simultaneously.
From integration to continuous link protection.
Email Flow Integration
URL scanning is integrated into your email flow at the gateway level. All inbound messages pass through URL rewriting before delivery. No changes required to end-user email clients.
Threat Intelligence Configuration
Threat intelligence feeds are configured and tuned to your sector and risk profile. Custom block lists for known attacker infrastructure relevant to your industry are applied from day one.
User Experience Optimisation
URL rewriting is configured to be transparent to users for legitimate links. Warning pages for suspicious links are customised with your branding and clear guidance on what to do next.
Analytics Dashboard Setup
Click analytics dashboards are configured for your IT team and management. Reports show blocked clicks, user engagement with suspicious content, and trend data over time.
Retroactive Remediation Testing
Retroactive remediation capability is tested against historical email samples. Response time from threat identification to organisation-wide link neutralisation is validated and documented.
Ongoing Policy Management
URL scanning policies are reviewed quarterly and updated as new attack techniques emerge. Custom allow lists for business-critical applications are maintained to prevent false positive disruption.
How we have blocked malicious links for UK organisations.
Delayed Activation Phishing Campaign
A Sheffield logistics company received emails with links that appeared legitimate at delivery time. The attacker activated the malicious payload 24 hours after delivery, after initial scans had cleared the links.
Click-time scanning blocked the link when a staff member clicked 36 hours after delivery. Retroactive remediation neutralised the link in all other mailboxes. No credentials compromised.
Credential Harvesting via Shortened URL
A Newcastle accountancy firm received emails containing shortened URLs that redirected through three hops to a convincing fake Microsoft 365 login page designed to harvest credentials.
Redirect chain following unwound all three hops and identified the credential harvesting page. Link blocked at click time. Staff member warned. No credentials entered.
Compromised Legitimate Website Used as Relay
A Cardiff healthcare organisation received emails linking to a legitimate charity website that had been compromised and was serving malware to visitors from specific IP ranges.
Page rendering analysis identified the malicious payload despite the legitimate domain reputation. Link blocked. Charity notified of compromise. No malware delivered.
Find out how many malicious links are reaching your organisation right now.
Our free URL security assessment analyses your current email flow, tests your link scanning capability, and identifies gaps in your click-time protection. Results delivered within 48 hours.