The Shift to EASM: Ensuring Continuity After March 31st
On 31 March 2026, the National Cyber Security Centre (NCSC) officially retired two of its staple tools: Web Check and Mail Check. For years, these services provided essential baseline security for UK organisations. However, the threat landscape has evolved, and the NCSC now recommends that organisations adopt External Attack Surface Management (EASM) to manage their digital footprint more effectively.
Why the Change?
The transition to EASM represents a move from "point-in-time" checks to continuous, comprehensive visibility. While the NCSC services provided a great foundation, modern threats require a more dynamic approach to identifying vulnerabilities across domains, IPs, and cloud environments.
ACDS: A Trusted Partner in the EASM Transition
ACDS has been actively involved in this transition. Our platform, ACDS Observatory, was included in the NCSC’s Buyers Guide to EASM in September 2025. We worked closely throughout the NCSC’s consultation and experimental phases to improve their understanding of the industry offerings and customer needs.
Why Choose ACDS Observatory?
Moving to a new security platform can feel like a hurdle, but Observatory is designed for speed and simplicity:
- Instant Onboarding: As a native SaaS offering, we can onboard your organisation and deliver actionable results within minutes.
- Global Visibility: Observatory scans the entire internet every 24 hours. When you search for your domains or IPs, you aren’t looking at old data—you’re seeing your attack surface as it exists right now.
- Size Agnostic: Our platform is built to scale. We provide the same high-level protection to Small and Medium Businesses (SMBs) as we do for global Enterprises and large-scale Public Sector organisations.
Our Commitment: 2 Months Free Trial
We understand that procurement cycles and technical transitions don't always align perfectly with retirement dates. To ensure no organisation is left vulnerable during this pivot, ACDS is offering a 2-month free trial of Observatory for those who have not yet implemented an EASM solution.
Our goal is to ensure that the retirement of Web Check and Mail Check isn't a period of risk, but an opportunity to upgrade your cyber resilience.