The Best Attack Surface Management UK
The best attack surface management providers for UK organisations in 2026 span two different models: managed services that discover, triage, and act on exposures, and enterprise software platforms built for large, complex estates. This guide compares 7 providers: Precursor Security (EdgeProtect), Intruder, Detectify, Palo Alto Networks Cortex Xpanse, CyCognito, Bitsight, and Rapid7 (Command), on criteria any buyer can check independently.
Seven attack surface management providers serving UK organisations, compared on the criteria that actually matter: whether findings are triaged and actioned or just listed, whether the model is a managed service or software you run yourself, pricing you can see, and where each provider genuinely fits.
We are Precursor Security, and we have ranked ourselves first on this list.
We are also the only managed service on it. Three of the seven providers below are enterprise ASM software platforms built for a different scale of buyer than the UK mid-market organisations we serve; we say so plainly rather than pretending we compete head-on with a global exposure management platform. What we publish here is the selection criteria in full, a fair description of every provider, and where possible a link to the pricing page so you can check our working yourself.
Seven providers, side by side
| Provider | HQ / ownership | Pricing published | From |
|---|---|---|---|
| 1. Precursor Security (EdgeProtect)Managed ASM service | UK (Leeds); privately owned, CREST-accredited | Model published | Free trial scan |
| 2. IntruderSelf-serve SaaS platform | UK; privately held | Yes | Published, tiered per-target |
| 3. DetectifySelf-serve SaaS platform | Stockholm, Sweden; privately held, venture-backed | Yes | From €302/month |
| 4. Palo Alto Networks Cortex XpanseEnterprise ASM software platform | Santa Clara, California, US (Palo Alto Networks, Nasdaq: PANW) | No | On application |
| 5. CyCognitoEnterprise ASM software platform | Palo Alto, California, US; privately held, venture-backed | No | On application |
| 6. BitsightEnterprise risk platform with ASM | Cambridge, Massachusetts, US; privately held, venture-backed | No | On application |
| 7. Rapid7 (Command / Exposure Command)Enterprise exposure management platform | Boston, Massachusetts, US; publicly traded (Nasdaq: RPD) | Yes | Published, per-asset |
Verified against each provider's public website, August 2026. "Model published" means the deployment options are described publicly but the final rate is confirmed at scoping; "No" means we could not find pricing publicly stated.
The 7 best attack surface
management providers in 2026
1. Precursor Security (EdgeProtect)
EdgeProtect is Precursor Security's managed attack surface management service: continuous external asset discovery, exposed service and vulnerable software detection, DNS and email configuration analysis, and credential exposure monitoring from public data breaches. Findings are scored against real-world exploitation data (EPSS) rather than CVSS alone, and can be actioned by Precursor's UK-based SOC or fed directly into a penetration testing engagement, closing the loop between what is discovered and what gets fixed and validated. Available on-demand (self-service scanning, free trial available) or as a fully managed service Precursor configures and triages on your behalf.
Trade-off: A managed service built for the mid-market, not an enterprise ASM software platform. Organisations wanting to run their own global-scale discovery engine across thousands of subsidiaries should look at the enterprise platforms further down this list.
2. Intruder
Intruder is a UK-based, self-serve vulnerability and attack surface management platform. Its Continuous Attack Surface Monitoring product automatically scans newly discovered cloud assets and internet-facing services as they appear, and pricing is published as a base platform fee plus a per-target charge across four tiers (Essential, Cloud, Pro, and a custom Vanguard tier for larger estates).
Trade-off: A software platform you run yourself. Triage, prioritisation against your specific risk tolerance, and remediation follow-through are left to your own team unless you buy Intruder's higher-touch options.
3. Detectify
Detectify, headquartered in Stockholm, pairs external attack surface monitoring with payload-based application scanning, sourcing new test cases from a vetted crowdsourced ethical hacker community. Surface Monitoring continuously discovers domains, subdomains, IPs, open ports, and running technologies, and pricing is published on the company's site: annual platform fee bands from €0 to €15,000, with Surface Monitoring listed from €302 per month.
Trade-off: A self-serve software platform, not a managed service. Findings still need an internal team, or a third party, to triage and act on them.
4. Palo Alto Networks Cortex Xpanse
Cortex Xpanse is Palo Alto Networks' external attack surface management product, built for continuous global discovery of internet-facing assets across large, distributed organisations and integrated into the wider Cortex security operations portfolio. It is an enterprise software platform, sold and deployed at the scale of a global security programme.
Trade-off: Pricing is not published; engagement is sales-led. Built for enterprise-scale estates rather than a single mid-market UK organisation's external footprint, and it is a discovery and reduction tool, not a UK SOC that triages findings for you.
5. CyCognito
CyCognito is a Palo Alto, California-based, venture-backed exposure management platform that discovers an organisation's external footprint, including subsidiaries, cloud, SaaS, APIs, and third parties, from minimal starting information, then runs automated tests to validate which exposures are actually exploitable.
Trade-off: No published pricing; access starts with a free scan and a sales conversation. Built for security teams running an enterprise exposure management programme, not a bundled service with a UK SOC attached.
6. Bitsight
Bitsight, headquartered in Cambridge, Massachusetts, built its name on security ratings and third-party risk management, and has extended into external attack surface management through its Attack Surface Intelligence and EASM products. It suits organisations that already buy Bitsight for vendor risk scoring and want attack surface visibility on the same platform.
Trade-off: Pricing is not published. Its core strength is ratings and third-party risk, with ASM as an extension, so a buyer whose primary need is external asset discovery is not its core use case.
7. Rapid7 (Command / Exposure Command)
Rapid7, a publicly traded company (Nasdaq: RPD) headquartered in Boston, folds attack surface visibility into its Command Platform alongside Exposure Command and InsightVM. It unifies external (EASM) and internal (CAASM-style) asset visibility, risk-based prioritisation, and remediation workflows into a single enterprise exposure management platform, and publishes per-asset pricing on its site.
Trade-off: Priced and packaged as part of a broader exposure management platform, which suits organisations already consolidating on Rapid7 rather than a buyer who wants a standalone, mid-market ASM service.
How we ranked them
Six criteria, each something a buyer should care about and can largely verify without taking anyone's word for it. Weighting is ours; the underlying facts are checkable. Read more on our approach to closed-loop security.
Whether the external asset inventory is monitored around the clock and updated as new subdomains, cloud instances, and services appear, versus a one-off audit that goes stale the day after delivery.
Whether a human, ideally a SOC, reviews new findings against your risk tolerance and acts on the critical ones, or whether the platform hands you a raw list and leaves prioritisation entirely to your own team.
Whether ASM findings feed into a manual testing engagement that validates and exploits the exposures that matter most, closing the loop between discovery and proof of impact, rather than sitting in a dashboard nobody revisits.
Whether the service checks public data breaches and leaked-credential sources for compromised employee accounts, one of the most common initial access vectors, alongside asset and service exposure.
Whether findings are contextualised and validated before they reach you, so your team spends its time on genuine exposures rather than triaging noise generated by an automated scanner.
Whether the provider delivers to a UK organisation with UK data handling and support, and whether you can see how pricing works before a sales call, rather than discovering only that it is quoted on application.
Red flags when choosing
an ASM provider
Whichever provider you choose, including us, walk away if you see these.
A tool that dumps assets with no triage
A long list of discovered subdomains and open ports is not a security programme. Ask who reviews the findings, how often, and against what risk criteria, before you buy.
Discovery with no response
Finding an exposed service is only useful if something happens next. If the answer to "then what?" is "you get an alert," check that your own team has the capacity to act on it before every finding.
Enterprise pricing for a mid-market need
Several ASM platforms are built and priced for organisations running global, multi-subsidiary estates. A single-region UK mid-market business buying that scale of platform is paying for capacity it will never use.
No link into testing or remediation
A finding that never gets validated by manual testing, or verified as fixed, is a finding you cannot prove is closed to an auditor or an insurer. Ask whether ASM output connects to a retest or a penetration testing engagement.
Unverifiable coverage claims
Claims about the number of assets, domains, or nodes monitored should be checkable against the provider's own published material. If a claim only appears in a sales deck, ask for the source.
Lock-in with no exit path
Check what happens to your asset inventory, historical findings, and monitoring configuration if you switch providers. A platform that makes your own data hard to export is optimising for retention, not for your security.
Discovery is the start, not the finish
Attack surface management earns its keep when a finding leads somewhere: a SOC analyst triaging it against your environment, a penetration tester validating whether it is genuinely exploitable, or a remediation ticket that gets tracked to closure. Precursor built EdgeProtect on that principle, feeding discovery straight into penetration testing and 24/7 SOC monitoring rather than leaving a dashboard for your team to interpret alone.
Read about closed-loop securityCompare us against anyone on this list.
A free trial scan, discovery findings triaged by our UK SOC, and a direct line into penetration testing when it matters.
Choosing an ASM provider
The questions buyers ask most when comparing attack surface management options.
Attack surface management is the continuous discovery, monitoring, and prioritisation of an organisation's internet-facing assets and exposures: domains, subdomains, IP ranges, exposed services, vulnerable software, email configuration, and credentials leaked in public data breaches. The goal is to find and fix exposures before an attacker does, rather than relying on a single point-in-time snapshot.
It depends heavily on whether you are buying a self-serve platform or a managed service, and on the size of your external estate. Self-serve platforms such as Intruder and Detectify publish tiered pricing from roughly a few hundred pounds or euros per month for smaller estates. Enterprise platforms such as Cortex Xpanse, CyCognito, and Bitsight do not publish pricing and are quoted through a sales process. Managed services vary by scope and whether triage and remediation guidance are included; Precursor offers a free trial scan and a fixed quote once scope is confirmed.
A vulnerability scan checks a known list of assets against a database of known software weaknesses. Attack surface management starts a step earlier: it discovers the assets in the first place, including forgotten subdomains, shadow cloud instances, and expired domains you may not know you own, then monitors that inventory continuously and scans it for exposures, misconfigurations, and leaked credentials. A vulnerability scan needs a target list; ASM builds and maintains that list for you.
Yes, and the two are complementary rather than substitutes. A penetration test is a manual, point-in-time assessment, typically annual, where testers actively exploit weaknesses to prove real business impact. Attack surface management is continuous discovery and monitoring that fills the gap between tests, catching new exposures, forgotten assets, and leaked credentials as they appear rather than at the next scheduled engagement. Most UK organisations benefit from both: ASM for continuous visibility, penetration testing for depth and validation.
Organisations serving UK buyers include Precursor Security (EdgeProtect, a managed ASM service), Intruder (a UK-based self-serve platform), Detectify (a Swedish self-serve EASM and DAST platform), Palo Alto Networks Cortex Xpanse, CyCognito, Bitsight, and Rapid7 (Command), all enterprise software platforms. The right choice depends on whether you want a managed service with triage included or a platform your own team runs.