HEAD-TO-HEAD · FACTS ONLY
IONIX vs Defender EASM: exposure management facts side by side
SHORT ANSWER
IONIX describes 5 of the five tool types on the pages we read and Defender EASM describes 2; they differ on exposure validation, exposure management platforms and WAF posture. On proof, IONIX describes safe checks but not attack-style testing and Defender EASM does not describe exploit testing on the pages we read. We do not score either; the right choice depends on your estate, current platform, WAFs and capacity to fix.
By The Exposure Desk · Exposure Management Finder · Published 2026-10-11
Desk research from public vendor pages read in September 2026, updated 2026-10-11. Profiles follow our published method; we did not run the products.
How do their shapes compare?
- IONIX
- Microsoft Defender EASM
- Outer point: described on the vendor's pages we read
- Inner point: not in our sources (it may exist; we did not find it)
What are the facts, side by side?
| Fact | IONIX | Microsoft Defender EASM |
|---|---|---|
| Positioning | An ASM and exposure management platform that maps subsidiaries and the digital supply chain, validates exploitability with non-intrusive tests, and invokes compensating controls such as WAF rules, with humans approving what agents do. | Microsoft's external attack surface management service, run as an Azure resource, with a prebuilt inventory, recursive discovery from seeds and billing on the Azure bill. |
| Deployment | SaaS with a customer portal at portal.ionix.io; discovery uses 13 techniques and reaches third- and fourth-party assets. Source: IONIX attack surface discovery · Read 27 Sep 2026 | An Azure resource. Cross-tenant resource access, including Azure Lighthouse, is not supported. Source: Microsoft Learn: Defender EASM overview · Read 27 Sep 2026 |
| EASM discovery | Described Discovery with 13 techniques, including third- and fourth-party assets in the digital supply chain. Source: IONIX attack surface discovery · Read 27 Sep 2026 | Described A prebuilt inventory for many organisations plus recursive discovery from seeds you supply. Source: Microsoft Learn: what is discovery · Read 27 Sep 2026 |
| Exposure validationDiffers | Described Non-disruptive active exploitability testing; for new CVEs, safe, non-intrusive validation tests built from public proof-of-concept exploits. Source: IONIX Live Exposure Defense · Read 11 Oct 2026 | Not in our sources |
| Exposure management platformsDiffers | Described Describes a six-stage workflow for external exposure; internal vulnerability or identity data are not described on the pages we read. Source: IONIX homepage · Read 27 Sep 2026 | Not in our sources |
| CTEM programme support | Described Describes a six-stage workflow (discovery, inventory, assessment, validation, prioritization, remediation) and a CTEM use case "that detects and acts in real time". Source: IONIX homepage (re-read) · Read 11 Oct 2026 | Described Covers discovery and inventory with dashboards for vulnerabilities, compliance and hygiene; remediation happens downstream through Log Analytics and Azure Data Explorer. Source: Microsoft Learn: data connections · Read 27 Sep 2026 |
| WAF postureDiffers | Described WAF Posture Management identifies WAFs across Akamai, Cloudflare, AWS, Azure, Imperva, Barracuda, Fortinet, Palo Alto Networks, Fastly and 50+ others, and turns a CVE into a deployable WAF rule within 12 hours of publication. Source: IONIX WAF Posture Management · Read 27 Sep 2026 | Not in our sources |
| Subsidiary and owner attributionDiffers | Matches Describes agentic corporate, subsidiary and brand discovery and attributes each asset to a subsidiary or business owner, including assets that arrive through M&A. Source: IONIX homepage (re-read) · Read 11 Oct 2026 | Partly Every asset carries a state (Approved Inventory, Dependency, Monitor Only, Candidate, Requires Investigation) based on connection strength and confidence; cross-tenant access is not supported. Source: Microsoft Learn: what is discovery · Read 27 Sep 2026 |
| Internal as well as external assets | Not in our sources | Not in our sources |
| Cloud connections namedDiffers | Matches Names Wiz and Palo Alto Prisma Cloud among its integrations. Source: IONIX exposure validation · Read 27 Sep 2026 | Partly Runs as an Azure resource; connections to other clouds are not described. Source: Microsoft Learn: data connections · Read 27 Sep 2026 |
| Exploitability checkedDiffers | Matches Non-intrusive exploit simulations. Source: IONIX exposure validation · Read 27 Sep 2026 | Not in our sources |
| Attack-style testingDiffers | Partly Validation uses safe, non-intrusive tests built from public proof-of-concept exploits; attack-agent or red-team style testing is not described. Source: IONIX Live Exposure Defense · Read 11 Oct 2026 | Not in our sources |
| Works through your WAF or edgeDiffers | Matches Delivers WAF rules for new CVEs into remediation workflows. Source: IONIX WAF Posture Management · Read 27 Sep 2026 | Not in our sources |
| WAF coverage across several vendorsDiffers | Matches Finds unprotected assets, checks enforcement status and detects configuration drift across WAF deployments from 50+ vendors. Source: IONIX blog: WAF Posture Management launch · Read 27 Sep 2026 | Not in our sources |
| Retests after a fixDiffers | Matches IONIX's homepage lists "Instant re-validation of remediated items". Source: IONIX homepage (re-read) · Read 11 Oct 2026 | Not in our sources |
| Routes findings to owners and ticketsDiffers | Matches Integrations with Jira, ServiceNow, Slack, Splunk and Cortex XSOAR. Source: IONIX exposure validation · Read 27 Sep 2026 | Partly Data connectors to Log Analytics and Azure Data Explorer trigger remediation actions downstream. Source: Microsoft Learn: data connections · Read 27 Sep 2026 |
| Applies a compensating controlDiffers | Matches Describes agentic mitigation that "automatically invoke[s] compensating controls": WAF rules deployable via Akamai, Cloudflare or other supported WAF vendors, and Active Protection for dangling assets and DNS hijacking targets. Source: IONIX Live Exposure Defense · Read 11 Oct 2026 | Not in our sources |
| Price or pricing basis publishedDiffers | Matches AWS Marketplace lists Silver, Gold and Platinum plans at $25,000, $35,000 and $45,000 a month on a 1-month contract. Source: AWS Marketplace: IONIX Attack Surface Management · Read 11 Oct 2026 | Partly Billable assets are defined (approved host:IP combinations, domains and IP addresses) and charged on the Azure bill; Microsoft's pricing page showed no rate when we read it. Source: Microsoft Learn: understanding billable assets · Read 27 Sep 2026 |
| Trial or self-serve startDiffers | Not in our sources | Matches A 30-day free trial, then Azure billing. Source: Microsoft Learn: understanding billable assets · Read 27 Sep 2026 |
| Platform it extends | None | Native to Azure, billed on the Azure bill, with a Security Copilot integration in preview. Source: Microsoft Learn: Defender EASM documentation · Read 27 Sep 2026 |
| Integrations | Names Jira, ServiceNow, Splunk, Microsoft Azure Sentinel, Cortex XSOAR, Slack, Wiz and Palo Alto Prisma Cloud, plus an API, on its validation page. No integrations list is published: ionix.io/integrations returned a 404 in September and the partners page lists none. Source: IONIX exposure validation · Read 27 Sep 2026 | Data connections to Log Analytics and Azure Data Explorer, and a Security Copilot integration in preview. Source: Microsoft Learn: data connections · Read 27 Sep 2026 |
| Price | AWS Marketplace, 1-month contract, per month: Silver Plan (monthly monitoring) $25,000; Gold Plan (weekly monitoring) $35,000; Platinum Plan (continuous monitoring) $45,000. 12-, 24- and 36-month contracts are offered, with savings of up to 10% (24 months) and 20% (36 months). Sold as SaaS by IONIX.IO. Source: AWS Marketplace: IONIX Attack Surface Management · Read 11 Oct 2026 | Billed through Azure on billable assets (approved host:IP combinations, domains and IP addresses) after a 30-day free trial. Microsoft's pricing page did not show a rate when we read it; check it for the current figure. Source: Microsoft Learn: understanding billable assets · Read 27 Sep 2026 |
Where do they differ?
- Exposure validation: IONIX describes it; Defender EASM is not in our sources.
- Exposure management platforms: IONIX describes it; Defender EASM is not in our sources.
- WAF posture: IONIX describes it; Defender EASM is not in our sources.
- Subsidiary and owner attribution: IONIX matches; Defender EASM partly matches.
- Cloud connections named: IONIX matches; Defender EASM partly matches.
- Exploitability checked: IONIX matches; Defender EASM is not in our sources.
- Attack-style testing: IONIX partly matches; Defender EASM is not in our sources.
- Works through your WAF or edge: IONIX matches; Defender EASM is not in our sources.
- WAF coverage across several vendors: IONIX matches; Defender EASM is not in our sources.
- Retests after a fix: IONIX matches; Defender EASM is not in our sources.
- Routes findings to owners and tickets: IONIX matches; Defender EASM partly matches.
- Applies a compensating control: IONIX matches; Defender EASM is not in our sources.
- Price or pricing basis published: IONIX matches; Defender EASM partly matches.
- Trial or self-serve start: IONIX is not in our sources; Defender EASM matches.
Choose IONIX if
- You have many subsidiaries or acquisitions and need each asset tied to an owner
- Your fastest fix is usually a WAF rule rather than a patch
Choose Defender EASM if
- You are on Azure and want to start without a sales call
- You want a discovery baseline before buying validation
Which limits should you check?
IONIX
- Validation uses safe, non-intrusive tests; CyCognito, Hadrian and watchTowr describe more aggressive attack-style testing.
- Internal (behind the firewall) assets are not described on the pages we read.
- No integrations list is published, and the lowest AWS Marketplace plan is $25,000 a month.
Defender EASM
- No exploit validation is described.
- No built-in remediation workflow, and no cross-tenant resource access for groups with several Azure tenants.
Questions readers ask
Is IONIX or Defender EASM better?
Neither is scored on this site. IONIX describes 5 of five tool types and Defender EASM 2 on the pages we read, and they differ on 14 recorded facts. Which fits depends on your estate, current platform, need for proof, WAFs and capacity to fix; the finder checks those.
Which of the two proves exploitability?
IONIX: exploitability checked: Matches; attack-style testing: Partly. Defender EASM: exploitability checked: Not in our sources; attack-style testing: Not in our sources.
Do IONIX or Defender EASM publish prices?
IONIX: AWS Marketplace, 1-month contract, per month: Silver Plan (monthly monitoring) $25,000; Gold Plan (weekly monitoring) $35,000; Platinum Plan (continuous monitoring) $45,000. 12-, 24- and 36-month contracts are offered, with savings of up to 10% (24 months) and 20% (36 months). Sold as SaaS by IONIX.IO. Defender EASM: Billed through Azure on billable assets (approved host:IP combinations, domains and IP addresses) after a 30-day free trial. Microsoft's pricing page did not show a rate when we read it; check it for the current figure.