Red Sift on G-Cloud 14: Your trusted partner for the NCSC Web Check transition

TL;DR:

With NCSC discontinuing Web Check on 31 March 2026, UK public sector organisations need comprehensive attack surface management solutions. Red Sift ASM, available through G-Cloud 14, serves as the ideal Web Check successor.

Red Sift ASM provides continuous attack surface monitoring, automated shadow IT discovery, DNS misconfiguration detection, and integrated certificate management. As a recognised NCSC contributor who supported the ACD's 2024 EASM market research with over 900 hours of trial service, Red Sift understands what organisations need from attack surface management.

For existing Red Sift OnDMARC customers: ASM seamlessly integrates with your current email security platform, providing unified visibility across both email authentication and external attack surface.

For organisations new to Red Sift: While evaluating Web Check alternatives, consider bringing both ASM and OnDMARC under one platform. This unified approach delivers comprehensive protection across email security and attack surface management with a single vendor relationship.

Red Sift maintains a 4.9/5 G2 rating with award-winning customer support. Start your migration now to ensure seamless transition by March 2026.

With the NCSC discontinuing Mail Check and Web Check services on March 31, 2026, UK public sector organisations need to find new solutions for email authentication monitoring and attack surface management. The good news? Red Sift offers comprehensive alternatives available directly through G-Cloud 14, making procurement straightforward while ensuring continuity in your cyber defence posture.

G-Cloud 14 provides a fast, secure way for public sector organisations to procure cloud-based security solutions. Pre-vetted suppliers and compliance-aligned offerings ensure a smooth transition while meeting government cybersecurity standards. For organisations navigating the NCSC service changes, G-Cloud 14 simplifies the procurement process during what could otherwise be a disruptive transition.

Red Sift stands out on G-Cloud 14 as the leading DMARC and Attack Surface Monitoring (ASM) provider offering direct service delivery, ensuring streamlined communication and support straight from our award-winning Customer Success team. While other solutions are only available through resellers, Red Sift gives you the choice of direct access or managed service delivery through experienced partners.

As the NCSC shifts focus from Web Check to concentrate resources where it can provide unique value, Red Sift ASM emerges as the natural successor for comprehensive attack surface monitoring.

• Continuous visibility and discovery: Red Sift ASM provides real-time monitoring of your external attack surface, automatically discovering shadow IT, cloud assets, and internet-facing infrastructure that could become entry points for attackers. The platform continuously scans for misconfigurations, vulnerabilities, and exposed services across your entire digital footprint.
• Security analysis that drives action: Rather than simply identifying issues, Red Sift ASM provides clear, prioritised remediation guidance. The platform detects DNS misconfigurations, outdated software, exposed services, and certificate issues, then presents findings in an intuitive dashboard that makes it easy to understand your risk posture and take action.
• Integrated certificate management: Red Sift Certificates complements ASM by ensuring you never experience the disruption and reputational damage of expired or misconfigured SSL/TLS certificates. With automated discovery and intelligent alerts, you'll have plenty of time to renew before expiration, eliminating the manual tracking that leads to costly outages.
• Why Red Sift ASM is the right choice: As a recognised contributor to NCSC guidance, Red Sift supported the ACD's 2024 exploration into attack surface management, contributing over 900 hours of trial service time. This collaboration informed the NCSC's market research and helped shape their understanding of customer needs in EASM.

The platform delivers exactly what the NCSC buyer's guide emphasizes: comprehensive visibility, actionable security analysis, and supporting functions like dashboards, reporting, and workflow management, all within a single, integrated solution.

While this year’s Mail Check deadline came into force on March 24 2025, for organisations looking for a complete package to both Web Check and Mail Check under one platform, Red Sift OnDMARC provides all the capabilities you've relied on, plus significant enhancements:

Full UK government requirements coverage:

• DMARC, DKIM, and SPF implementation and monitoring
• DMARC aggregate reporting for visibility into domain usage
• MTA-STS implementation for secure email transmission
• TLS reporting to identify and resolve encryption issues

Additional advantages:

• Dynamic SPF management that bypasses the 10-lookup limit without macros
• Integrated BIMI with VMC/CMC provisioning for verified logo display
• DNS Guardian monitoring for subdomain attacks and misconfigurations
• Enhanced forensic reporting with Yahoo's exclusive forensic feed
• Red Sift Radar, our embedded LLM assistant that resolves issues 10x faster

Red Sift OnDMARC is backed by ISO 27001 and Cyber Essentials certifications, with UK data residency ensuring compliance with local data protection regulations. Our customers typically reach full DMARC enforcement in 6-8 weeks, protecting against phishing and spoofing while maintaining email deliverability.

Beyond meeting technical requirements, Red Sift maintains an exceptional 4.9 out of 5 rating on G2, reflecting consistent delivery of outstanding customer experiences. Our Customer Success team provides responsive, knowledgeable support that helps you maximise value from day one, whether you're navigating DMARC deployment or scaling attack surface management across your domain portfolio.

For public sector organisations, we offer flexible support options including email, phone, web chat, and onsite assistance, comprehensive coverage that many G-Cloud 14 alternatives simply don't provide.

With the March 2026 deadline approaching, now is the time to evaluate your options and plan your migration. Red Sift is a trusted provide and advisory for UK organisations needing support and we are ready to help you.