UK Cyber Security and Resilience Bill — Introduced 2025
24-hour incident reporting. Fines up to £17 million. MSPs regulated for the first time. The Cyber Security and Resilience Bill rewrites the rules for every UK firm handling critical services or digital infrastructure.
DataShielder gives you continuous visibility into the data exposures and vulnerabilities that trigger obligations under the new law—before regulators come knocking.
The Cyber Security and Resilience Bill is the most significant overhaul of UK cyber regulation since the NIS Regulations 2018. With the NCSC reporting a 130% increase in nationally significant incidents and £15 billion lost to cyber attacks annually, Parliament is tightening the rules.
Data Centres • MSPs • Digital Services
The Bill brings data centres, managed service providers, and critical suppliers into regulation for the first time. If you provide IT services to regulated entities, you are now directly in scope.
NCSC • Sectoral Regulators • Customers
Significant cyber incidents must be reported to your regulator and the NCSC within 24 hours. A detailed report follows within 72 hours. Affected customers must be notified as soon as reasonably practicable.
Critical Suppliers • Third-Party Risk
Suppliers critical to regulated services face new designation rules. Operators must demonstrate they manage supply chain cyber risk—yet fewer than 25% of UK firms currently review their supply chain cyber posture.
Proactive Investigations • Cost Recovery
Regulators gain powers to proactively investigate vulnerabilities and supply chain risks. The ICO can now gather information before incidents happen—not just after.
£17M Cap • 4% Turnover • £100K/Day
The most serious breaches face fines up to £17 million or 4% of global turnover. The Secretary of State can impose daily fines of £100,000 for failing to act on threats affecting national security.
Secondary Legislation • Future Sectors
The Secretary of State can add new sectors and update security requirements without new primary legislation. Even if you're out of scope today, you may not be tomorrow.
The Bill significantly widens who falls under cyber security regulation. If your organisation touches any of these areas, you need to prepare now.
Under the new Bill, the moment you become aware of a significant cyber incident, you have just 24 hours to notify your sectoral regulator and the NCSC. A detailed follow-up report must land within 72 hours.
Affected customers must be notified “as soon as reasonably practicable.” You can't report what you can't see. And you can't respond in 24 hours if it takes you 277 days to discover a breach.
Key concern from the cybersecurity community: The 24-hour window is the tightest reporting deadline in UK cyber law. Organisations without continuous monitoring will struggle to meet it—and the penalties for failure are severe.
Clock starts the moment you become aware of a significant incident
Notify your sectoral regulator and the NCSC with an initial report
Submit a comprehensive incident report with scope, impact, and remediation steps
Notify affected customers “as soon as reasonably practicable”
277 days
IBM Cost of a Data Breach Report
<24 hours
From deploy to detection
Security professionals, MSPs, and compliance teams are raising real concerns about the Bill's impact. Here are the biggest challenges—and how DataShielder helps you address them.
Most organisations take months to discover they’ve been compromised. The 24-hour window starts from awareness, but awareness requires visibility. Without continuous monitoring, the first you hear of a breach may be from the NCSC themselves.
Continuous scanning detects data exposures, leaked credentials, and misconfigurations within hours of them appearing. You gain the early warning system needed to discover incidents on your own terms—and meet the 24-hour clock.
The Bill makes operators responsible for their critical suppliers’ cyber resilience. Yet fewer than 25% of large UK businesses review supply chain cyber risk today. Manual assessments are slow, expensive, and outdated by the time they’re completed.
Monitor your suppliers’ external-facing assets for exposed data, vulnerable endpoints, and misconfigurations. Add supplier domains as targets and get continuous visibility into their security posture—no supplier cooperation required.
Around 1,100 MSPs will fall within scope for the first time. MPs have raised concerns that smaller providers lack the resources and expertise for compliance. Yet MSPs are high-value targets—compromise one MSP, and you compromise all their clients.
Deploy in minutes with zero engineering overhead. Register your domains and your clients’ domains, and scanning starts immediately. Audit-ready reports demonstrate due diligence to regulators. No source code access or pipeline changes needed.
The ICO and sectoral regulators gain powers to proactively investigate vulnerabilities and supply chain risks—before any incident occurs. Having no evidence of ongoing monitoring is itself a compliance risk.
Every scan produces timestamped, exportable reports. Build an auditable record of continuous monitoring, demonstrating to regulators that your organisation proactively identifies and mitigates risks—a key factor in penalty reduction.
MPs have criticised the Bill’s broad definition of managed service providers, which risks capturing entities beyond the intended scope. And with the power to expand scope via secondary legislation, any organisation could find itself regulated in future.
Regardless of whether you’re formally in scope today, continuous monitoring is a best practice that protects your business. If the scope expands to include your sector, you’ll already have the monitoring infrastructure and audit trail in place.
Where does your organisation stand when the Bill receives Royal Assent?
No source code access. No pipeline changes. No lengthy procurement. Compliance and security teams can act independently.
Add your organisation's domains and your critical suppliers' domains. We automatically discover all subdomains, endpoints, and web-facing assets.
Our scanners monitor for exposed PII, leaked credentials, misconfigurations, and vulnerabilities—the exact exposures that trigger reporting obligations under the Bill.
Receive detailed, timestamped findings with severity classification and remediation guidance. Export reports for the NCSC, your sectoral regulator, or compliance audits.
"The NCSC reports a 130% increase in nationally significant incidents.
The question isn't if, but when."
"24 hours to report.
277 days to detect.
The maths doesn't work."
"£15 billion lost to cyber attacks annually.
Monitoring costs a fraction of a fine."
Don't wait for Royal Assent. Organisations that build continuous monitoring now will meet the new requirements with minimal disruption—and have the audit trail to prove it.
Disclaimer: This page is provided for informational purposes only and does not constitute legal advice. The Cyber Security and Resilience Bill is subject to amendment as it progresses through Parliament. Always consult with qualified legal counsel for specific compliance requirements applicable to your organisation. Statistics sourced from IBM Cost of a Data Breach Report, NCSC Annual Review, and KPMG research.