See your attack surface the way attackers do — then shrink it.
WoneShield Surface is external attack surface management (EASM): continuously discover internet-facing assets, shadow IT, exposures and leaked credentials — mapped as a live attack-path graph, with proactive blocking of hostile sources.
Built for security teams · the outside-in view of your estate
Why EASM
Most breaches start on an asset you forgot you had.
You can't defend what you can't see
Forgotten subdomains, shadow-IT apps and dev servers spun up and never shut down — attackers find them before you do.
Your perimeter changes every day
New cloud assets, certificates and DNS records appear constantly. A one-time pen test is stale the moment it ends.
Leaked credentials open the front door
Employee passwords surface in breaches and paste sites daily — and quietly become someone else's way in.
The visibility gap
You probably know about a fraction of your estate.
Continuous discovery
Find the shadow IT before an attacker does.
Surface maps every internet-facing asset from your seed domains — including the subdomains, cloud resources and forgotten servers no one's tracking — and re-discovers continuously as your perimeter changes.
- ✓Domains, subdomains, IPs, cloud, certificates
- ✓Shadow-IT and subsidiary discovery
- ✓Continuous — new exposure caught in hours
How Surface works
Discover. Assess. Prioritize. Shrink.
From seed domains to a prioritized, ever-current exposure picture.
- 1
Discover
Map every internet-facing asset from your seeds — domains, subdomains, IPs, cloud, certificates, and the shadow IT you forgot.
- 2
Assess
Test each for exposures, weak/expired TLS, DNS/DNSSEC issues, and check breach and paste sources for leaked credentials.
- 3
Prioritize
Score risk and lay out the attack paths — so you fix what an attacker would actually reach first.
- 4
Shrink & block
Guide remediation, and proactively block hostile networks (ASN-aware) at the edge with Aegis before they probe further.
Architecture
From outside-in discovery to edge blocking.
Outside-in, agentless discovery; self-hostable for full data residency of your surface data.
Capabilities
The attacker's view — continuously.
How it compares
Pen tests expire. Scanners need a list. Surface finds the unknown.
| Pen test | Vuln scanner | WoneShield Surface | |
|---|---|---|---|
| Discovers unknown / shadow assets | Point-in-time | — | ✓ |
| Continuous (not one-off) | — | Scheduled | ✓ |
| Leaked-credential intelligence | — | — | ✓ |
| Attack-path graph | Manual | — | ✓ |
| Proactively blocks hostile sources | — | — | ✓ |
| Self-host / data sovereignty | N/A | Rare | ✓ |
Integrations
Plugs into your edge and your workflows.
Why Surface
EASM that blocks, not just lists.
See what attackers see
Surface maps your estate from the outside in — the same view an adversary builds before they strike.
Continuous, not a snapshot
Your perimeter changes daily; Surface re-discovers and re-scores continuously, so new exposure is caught fast.
From finding to blocking
It doesn't just report exposure — paired with Aegis it blocks hostile sources at the edge, proactively.
Part of one platform
External exposure becomes Signals in the core, correlated by Argus and remediated through Respond.
See it in action
Watch Surface map an estate in two minutes.
Enter a seed domain and watch Surface discover assets, flag exposures and leaked credentials, draw the attack paths, and block a hostile source — outside-in, live.
- ✓Discovery from a single seed domain
- ✓Exposures + leaked-credential intel
- ✓ASN-aware edge blocking
By design
Less exposed, every day.
Return on investment
The exposures you never knew about cost the most.
Catching one exposed asset or leaked credential before it's abused typically pays for Surface many times over.
Better together
External intel that the platform acts on.
Surface is the outside-in eyes of WoneShield:
Use cases
What Surface uncovers.
“Surface found 230 unknown internet-facing assets in the first scan — including an exposed admin panel and leaked exec credentials. We shrank our attack surface 64% in a month.”
What security teams say
Seeing what they couldn't before.
“Surface found 230 internet-facing assets we didn't know existed — including a forgotten admin panel wide open to the world.”
Daniel RobertsHead of Security · SaaS“It flagged leaked credentials for three executives hours after a third-party breach. We reset before anyone tried them.”
Nadia HassanCISO · Fintech“The attack-path graph showed exactly how a subdomain takeover could chain into our cloud. We closed it in a day.”
Liam O'ConnorSecurity Architect · Retail“Continuous discovery caught a shadow-IT app spun up by marketing before it became an incident.”
Priyanka RaoSecOps Lead · Healthcare“ASN-aware blocking shut down recon traffic from a hostile network automatically. Find-and-block, not just find.”
George MensahNetwork Security Eng · Telecom“We mapped the attack surface of two acquired subsidiaries in an afternoon — due diligence that used to take weeks.”
Claire DuboisVP Security · Insurance“Surface found 230 internet-facing assets we didn't know existed — including a forgotten admin panel wide open to the world.”
Daniel RobertsHead of Security · SaaS“It flagged leaked credentials for three executives hours after a third-party breach. We reset before anyone tried them.”
Nadia HassanCISO · Fintech“The attack-path graph showed exactly how a subdomain takeover could chain into our cloud. We closed it in a day.”
Liam O'ConnorSecurity Architect · Retail“Continuous discovery caught a shadow-IT app spun up by marketing before it became an incident.”
Priyanka RaoSecOps Lead · Healthcare“ASN-aware blocking shut down recon traffic from a hostile network automatically. Find-and-block, not just find.”
George MensahNetwork Security Eng · Telecom“We mapped the attack surface of two acquired subsidiaries in an afternoon — due diligence that used to take weeks.”
Claire DuboisVP Security · InsuranceThe basics
What is EASM — and why isn't a scanner enough?
External Attack Surface Management (EASM) continuously discovers everything your organization exposes to the internet and assesses it for risk — from the attacker's outside-in perspective.
A vulnerability scanner needs a list of assets to scan. EASM's value is finding the assets that aren't on any list — the shadow IT, forgotten subdomains and acquired-company estate that attackers love.
- EASM vs vulnerability scanning
- Scanning checks known assets; EASM discovers unknown ones first, then assesses them.
- EASM vs pen testing
- A pen test is a point-in-time snapshot; EASM is continuous, so new exposure is caught as it appears.
Resources
Go deeper.
Pricing
Know your exposure before someone else does.
Priced by scope, billed annually. Large, multi-subsidiary, sovereign and MSSP deployments are priced to your environment — talk to sales.
- ✓Internet-facing asset discovery
- ✓DNS / TLS / certificate hygiene
- ✓Exposure detection
- ✓Continuous monitoring
- ✓Standard support
- ✓Everything in Core
- ✓Shadow-IT & subsidiary mapping
- ✓Leaked-credential intelligence
- ✓Attack-path graph & risk scoring
- ✓ASN-aware blocking (with Aegis)
- ✓Feeds Argus (XDR)
- ✓Everything in Pro
- ✓Self-host / data residency
- ✓Supply-chain surface monitoring
- ✓MSSP multi-tenant + white-label
- ✓Dedicated exposure analyst
One exposed asset caught before abuse typically pays for Surface many times over. Volume discounts available at scale.
Free download
The EASM Buyer's Guide (2026)
What real external attack surface management covers, how it differs from scanning, and the discovery questions that expose shadow IT.
Switching is painless
Relying on annual pen tests or a basic scanner?
Surface runs alongside what you have, maps your real external estate in hours, and gives you a continuous, prioritized exposure picture — no agents, no disruption.
FAQ
EASM, answered.
What is EASM (External Attack Surface Management)?+
EASM continuously discovers and monitors everything your organization exposes to the internet — domains, subdomains, IPs, cloud assets, certificates and shadow IT — then finds the exposures attackers could use. It's the outside-in complement to internal vulnerability scanning.
How is Surface different from a vulnerability scanner?+
A vulnerability scanner checks assets you already know about; Surface first discovers the assets you don't know about (shadow IT, forgotten subdomains), then assesses them — and maps the attack paths between them.
Does it detect leaked credentials?+
Yes. Surface monitors breach and paste sources for your domains and surfaces leaked credentials and data exposure so you can force resets before they're abused.
How often does Surface scan?+
Continuously. Discovery and assessment run on an ongoing basis, so new internet-facing assets and exposures are caught as they appear — not at the next audit.
Can it block attackers, not just find them?+
Yes — paired with Aegis, Surface proactively blocks hostile networks (ASN-aware) at the edge, turning external intelligence into active defense.
Can we self-host for data residency?+
Yes — Surface is sovereign by design, self-hostable with configurable data residency.
How much does WoneShield Surface (EASM) cost?+
Surface starts at $500/month (Core) and $1,500/month for Pro (full exposure + leaked-credential intelligence + attack-path graph), with custom Enterprise pricing for large or multi-subsidiary estates.
How long does it take to map our attack surface?+
Initial discovery from your seed domains completes within hours; a prioritized exposure report is ready the same day.
Free attack-surface scan
See your exposure in minutes — free.
We map your external attack surface from your domain and hand you a prioritized exposure report. No credit card, no commitment.
See what attackers already see
Start with a free assessment, or get a guided demo tailored to your stack.