Attack Surface Ranked

REVIEW · SCORED SEPTEMBER 2026 · CROWDSTRIKE EASM ADDED 13 OCTOBER 2026

Censys ASM review: internet-scan attack surface management, scored

Quick answer

Censys ASM ranks tenth of ten at 5.85 out of 10. Its internet scan data and integration list are strong, but discovery starts from seeds you supply and findings arrive without exploit proof or mitigation. It suits threat hunting teams more than teams that need exposures closed.

Scored September 2026 · CrowdStrike EASM added 13 October 2026 · Drawn from vendor product pages, docs and public pricing

What does Censys ASM do?

Censys runs first-party internet scanning across all 65K ports, which it says finds services on nonstandard ports, hosts with self-signed certificates and hosts in residential networks. Its ASM product continuously measures a customer's external attack surface from the outside and flags changes such as new hosts, ports, certificates and services.

Discovery starts from seeds: known public-facing assets the customer adds through the console or API. Censys then identifies connected assets, shown under a 'Found by Censys' tab. Risk detection uses EPSS, KEV and other scoring, with rapid response alerts for critical exposures or active exploitation, and Censys says teams can confirm reachability in seconds.

Integrations are the longest named list in the set: Jira, ServiceNow ITSM and CMDB, Tenable VM, Google Security Operations, Microsoft Sentinel, Axonius, Brinqa, Slack and Cisco Webex, plus AWS, Google Cloud and Azure.

What does a finding arrive with in Censys ASM?

  • Owner or subsidiary attributedNot documented
  • Exploitability provenPartial
  • Ticket or workflow createdDocumented
  • Compensating control appliedNot documented
  • Fix retestedNot documented

Censys proof: reachability confirmation and EPSS/KEV scoring, not exploitation.

A Censys finding arrives with fresh scan evidence and can open a ticket. Reachability is confirmed, but exploitation is not tested, and no owner attribution, mitigation or retest is documented.

How does Censys ASM score on each criterion?

DIS Discovery of unknown assets and subsidiaries

First-party scanning across all 65K ports finds services on nonstandard ports and hosts with self-signed certificates; discovery expands from seeds the customer supplies.

20% · 7 / 10

ATT Attribution accuracy and false-positive handling

Assets found beyond the seeds appear under a "Found by Censys" tab; attribution logic is not described in detail.

15% · 6 / 10

VAL Exploitability validation

Confirms reachability and applies EPSS and KEV scoring; no active exploitation testing is documented.

15% · 5 / 10

REM Remediation and mitigation support

Auto-creates, routes and tracks remediation tasks through ticketing; no mitigation is documented.

20% · 5 / 10

INT Integrations and platform reach

Jira, ServiceNow ITSM and CMDB, Tenable VM, Google Security Operations, Microsoft Sentinel, Axonius, Brinqa, Slack, Webex, plus AWS, Google Cloud and Azure.

10% · 8 / 10

TTV Time to value

Needs seeds before discovery starts.

10% · 6 / 10

PRC Pricing transparency

A free Censys platform account exists; ASM itself is contact sales.

10% · 4 / 10

Where is Censys ASM strongest?

  • Quality and freshness of internet scan evidence.
  • Integration list, including CMDB sync.
  • Value for threat hunting and incident response teams.

What should buyers check before choosing Censys ASM?

  • Seeds are required.
  • No exploit validation or mitigation.
  • ASM price not published.

How much does Censys ASM cost?

ASM is contact sales. Censys offers a free platform account with basic visibility into standard ports and services, and credits from $100 as an add-on.

Who should shortlist Censys ASM?

Security operations and CTI teams that want internet evidence, and organizations that already run Censys for threat hunting.

Frequently asked questions

Does Censys ASM need seeds?

Yes. Customers add seeds, known public-facing assets, and Censys discovers connected assets from them.

Is Censys free?

A free Censys platform account exists; the ASM product is contact sales.

How does Censys compare with CyCognito?

CyCognito scores 7.60 to Censys's 5.85, mainly on discovery without seeds, validation and remediation. See CyCognito vs Censys ASM.

What are the alternatives?

Sources: External exposure management, Pricing, Integrations, ASM get started, Seed your attack surface · Reviewed September 2026