Best Synack Attack Surface Discovery Alternatives & Competitors in 2026

Mandiant Attack Surface Management

Discovers and monitors external internet assets for exposures and vulnerabilities

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

Assetnote ASM

External attack surface management platform with continuous asset discovery

Censys Internet Map

Internet intelligence platform for asset discovery and attack surface mapping

Risksurface

SaaS platform for attack surface management and vulnerability detection

QuimeraX External Attack Surface Management

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

RiskXchange Attack Surface Management

Attack surface management platform for monitoring vulnerabilities and breaches

Censys Internet Intelligence Platform

Internet intelligence platform for asset discovery and threat analysis

Akamai DNS Posture Management

DNS security posture management across multicloud and on-prem environments

Anomali Attack Surface Management

External attack surface management platform for asset discovery and vuln mgmt

Axur Unified EASM + CTI

EASM platform with integrated CTI for asset discovery and vulnerability mgmt

Cytrusst Cyber Attack Surface Management

Attack surface management platform with dark web & brand monitoring capabilities

DarknetSearch Attack Surface Discovery

Attack surface discovery platform monitoring digital assets and data exposures

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

Check Point Attack Surface Management

Continuously maps digital footprint, identifies exposures & validates exploitability

CyCraft XCockpit EASM

External attack surface management platform with AI-powered risk assessment

UpGuard Breach Risk

External attack surface monitoring with threat intel and brand protection

TacitRed Tactical Attack Surface Intelligence

EASM platform providing curated threat intelligence for external attack surfaces

Aleph Search Clear

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

Coinnect EASM Platform

EASM platform for continuous external attack surface discovery and risk mgmt.

Salience xASM

xASM platform covering external, internal, and API attack surfaces.

KYND

Cyber risk mgmt platform for external scanning, monitoring & exposure mgmt.

KYND Attack Surface Management

External attack surface mgmt with CVE scanning & continuous monitoring.

LocateRisk

Non-invasive IT risk analysis & third-party cyber risk monitoring platform.

Attaxion

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

Cyber Exposure Manager

Cyber Exposure Manager: continuous visibility and remediation for external risk

StrikeOne Attack Surfa

AI-powered attack surface management platform for cybersecurity monitoring

Hadrian Agentic AI

AI-powered platform for continuous attack surface discovery and pentesting

Microsoft Defender EASM

Discovers and monitors external-facing assets and vulnerabilities

ThingsRecon Supply Chain Intelligence

Supply chain intelligence platform mapping digital ecosystems & proximity risks

Intruder Attack Surface Management

Attack surface mgmt platform with vuln scanning and cloud security features

Pentera Surface

External attack surface mgmt with automated pentesting and validation

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.

Matos Automated Attack Surface Management

Automated ASM tool for multi-cloud environments with continuous asset discovery

Palo Alto Networks Cortex Xpanse

Active attack surface mgmt solution for discovering & remediating unknown risks

Censys AI-Driven Solutions

AI-driven internet scanning platform for asset discovery and threat hunting

Team Cymru RADAR

Passive asset discovery platform using Netflow data for attack surface mapping

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

Detectify Platform

Platform for external attack surface management and application security testing

Detectify Surface Monitoring

Monitors internet-facing subdomains for vulnerabilities and misconfigurations

GoSecure Titan® Attack Surface Management

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

Halo Security External Attack Surface Management

External attack surface management platform for asset discovery and monitoring

watchTowr Platform

External attack surface management with continuous security testing