Best ThreatDefence Integrated ASM Alternatives & Competitors in 2026

Detectify Surface Monitoring

Monitors internet-facing subdomains for vulnerabilities and misconfigurations

Guardz External Footprint

External attack surface monitoring with dark web intelligence and scanning

Vulneri ASM

ASM platform for continuous discovery and risk validation of internet-exposed assets.

Cylana EASM

AI-powered EASM platform for digital asset discovery and monitoring.

ExposeLens

Domain exposure monitoring tool for leaked creds, subdomains & dark web data.

crt.sh

Bash script for subdomain enumeration via crt.sh certificate transparency logs.

SOC Radar Attack Surface Management

SOCRadar Attack Surface Management is an EASM platform that continuously discovers, monitors, and assesses internet-facing digital assets for vulnerabilities and security risks.

Cytrusst Cyber Attack Surface Management

Attack surface management platform with dark web & brand monitoring capabilities

Detectify Platform

Platform for external attack surface management and application security testing

Intruder Discover Attack Surface

Attack surface management platform for discovering and securing exposed assets

Edgescan Attack Surface Management (ASM)

External attack surface management platform for asset discovery and monitoring

Aleph Search Clear

OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web.

Muscope|Risk - Attack Perimeter

Maps external attack surface including assets, dark web exposure, and leaks.

crt.guru

External TLS cert monitoring with expiry alerts, vuln scanning & compliance reports.

Attaxion

Agentless EASM platform for asset discovery, exposure mgmt & risk reduction.

Threat Surface - Attack Surface Management

EASM platform for continuous discovery and risk assessment of external assets.

FestIn

FestIn discovers open S3 buckets associated with a domain using crawling and DNS reconnaissance techniques.

Amass

Amass is an open-source OWASP tool for comprehensive attack surface mapping and asset discovery through domain reconnaissance and subdomain enumeration.

domfind

Python utility for testing the existence of domain names under different TLDs to find malicious subdomains.

findmytakeover

A multi-cloud DNS security tool that detects dangling DNS records and potential subdomain takeover vulnerabilities by scanning cloud infrastructure and DNS zones.

Projectdiscovery.io | Chaos

A powerful enumeration tool for discovering assets and subdomains.

censys-enumeration

A script to extract subdomains/emails for a given domain using SSL/TLS certificate dataset on Censys.

ScanCannon

A Python-based tool for external attack surface discovery and reconnaissance across large-scale networks, focusing on IP address and subdomain enumeration.

autoSubTakeover

A tool to identify potential subdomain takeovers by checking if a CNAME record resolves to the scope address.

cnames

A tool for taking a list of resolved subdomains and outputting any corresponding CNAMES en masse.

ImmuniWeb® Discovery

ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web.

Assetnote Attack Surface Management Tool

ASM platform that scans external attack surfaces hourly for vulnerabilities

Outpost24 External Attack Surface Management

Cloud platform for continuous visibility & mgmt of external attack surfaces

Halo Security Attack Surface Management

External attack surface mgmt platform for discovering & monitoring assets

CloudSEK Attack Surface Management

External attack surface management platform for discovering digital assets

QuimeraX External Attack Surface Management

EASM platform for continuous monitoring of internet-exposed assets & vulnerabilities

Zerofox External Attack Surface Management

Discovers and manages internet-facing assets with vulnerability prioritization

SOC Radar DNS Monitoring

SOCRadar DNS Monitoring provides real-time monitoring of DNS infrastructure with automated discovery, record change alerts, and detection of DNS-based security threats.

Akamai DNS Posture Management

DNS security posture management across multicloud and on-prem environments

Siemba EASM

AI-driven EASM platform for discovering and monitoring external-facing assets

CyberXTron ShadowSpot

External attack surface management platform for asset discovery and risk detection

DarknetSearch Attack Surface Discovery

Attack surface discovery platform monitoring digital assets and data exposures

GoSecure Titan® Attack Surface Management

Discovers, monitors, and assesses external attack surface assets continuously.

Halo Security Attack Surface Discovery

Discovers and inventories internet-facing assets including subdomains, IPs, and apps.

NetSPI External Attack Surface Management (EASM)

Continuous discovery, monitoring, and testing of external assets and exposures

Orpheus External Attack Surface Management

EASM platform with continuous asset discovery and threat intelligence context

Trickest ASM - Attack Surface Management

Customizable ASM platform for asset discovery, monitoring, and enrichment

MokN Lantern

EASM platform for continuous external attack surface monitoring and detection

Strobes Attack Surface Management

Platform for continuous attack surface discovery, monitoring, and remediation

Outpost24 CyberFlex

EASM platform combined with PTaaS for web app discovery and testing

Ceeyu Digital Footprint Monitoring

Automated digital asset discovery and monitoring for external attack surface

CyCraft XCockpit EASM

External attack surface management platform with AI-powered risk assessment

SecurityScorecard Attack Surface Intelligence

Attack surface intelligence platform for threat hunting and asset discovery