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Leonidas is a free Threat Simulation tool. Security professionals most commonly compare it with GoSecure Titan® Adversarial Simulation. All 44 alternatives are matched by shared capabilities, tags, and NIST CSF 2.0 coverage.
A closer look at the 8 most relevant alternatives and competitors to Leonidas, including their key features and shared capabilities.
Human-led adversary emulation service testing detection & response capabilities
Shares 3 capabilities with Leonidas: Red Team, MITRE Attack, Detection Rules
Validates detective security controls through attack simulations and testing
Shares 3 capabilities with Leonidas: Red Team, MITRE Attack, Detection Rules
Cloud attack emulation platform for validating AWS security controls
Shares 3 capabilities with Leonidas: Red Team, MITRE Attack, AWS
SaaS BAS platform automating C2 attacks with AI-driven remediation plans
Exposure validation platform combining BAS and attack path validation (CART)
Automated ransomware attack emulation platform for defense validation
Open-source threat-informed exposure validation platform for attack simulation
Managed adversarial emulation & validation service for continuous security testing.
Human-led adversary emulation service testing detection & response capabilities
Validates detective security controls through attack simulations and testing
Cloud attack emulation platform for validating AWS security controls
SaaS BAS platform automating C2 attacks with AI-driven remediation plans
Exposure validation platform combining BAS and attack path validation (CART)
Automated ransomware attack emulation platform for defense validation
Open-source threat-informed exposure validation platform for attack simulation
Managed adversarial emulation & validation service for continuous security testing.
MITRE Caldera™ is an automated adversary emulation platform built on the MITRE ATT&CK framework that supports red team operations and incident response activities through a modular C2 server and plugin architecture.
Dorothy is a tool to test monitoring and detection capabilities for Okta environments, with modules mapped to MITRE ATT&CK® tactics.
A Python-based framework that generates evidence of MITRE ATT&CK tactics to help blue teams test their detection capabilities against simulated malicious activities.
An open-source platform that builds instrumented environments, simulates attacks, and integrates with Splunk for detection rule development and testing.
A cloud-focused attack simulation framework that provides granular, self-contained offensive techniques mapped to MITRE ATT&CK for red team exercises.
Automated security validation platform for testing attack surfaces continuously
Ransomware attack simulation service to test security defenses and response
Breach and attack simulation platform for testing security controls
Human-led breach and attack simulation service for security control validation
Security validation platform that simulates attacks to test security controls
Automated AI red teaming platform for testing GenAI apps, models & agents
Continuous security control validation platform testing EDR against adversary TTPs.
Adversary emulation tool that validates security control effectiveness via MITRE ATT&CK.
Red/Blue/Purple team & automated breach simulation service by SECNORA.
Cloud BAS tool that continuously simulates attacks to identify exploitable paths.
Continuous AI-based cloud red teaming via digital twin simulation.
Self-service cloud platform for controlled DDoS simulation and resilience testing.
Continuous security control validation platform using adversary emulation
An open-source security tool that simulates network breaches by self-propagating across data centers to test organizational resilience against lateral movement attacks.
A library of adversary emulation plans to evaluate defensive capabilities against real-world threats.
A testing tool that generates suspect actions to validate and test Falco runtime security monitoring rulesets.
Metta is an information security preparedness tool for adversarial simulation.
A collection of scripts and guidance for generating proof-of-concept Amazon GuardDuty findings to help users understand and test AWS security detection capabilities.
Caldera is a cybersecurity framework by MITRE for automated security assessments and adversary emulation.
Continuous DDoS testing platform that validates defenses via nondisruptive sims.
Tests email security gateways by simulating real-world email threats
Breach and attack simulation platform for security validation
Automated platform for testing cybersecurity controls against real threats
Validates EDR detection capabilities through autonomous penetration testing
AI-powered cyber risk emulation platform for insurance & enterprise.
Windows platform for auditing network security defences via custom PCAP replay.
Cloud-based DDoS attack simulation & monitoring platform for defense testing.
APT Simulator is a tool for simulating a compromised system on Windows.
A utility to generate malicious network traffic for security evaluation.
AutoTTP automates complex attack sequences and testing scenarios for regression tests and research using frameworks like Empire, Metasploit, and Cobalt Strike.
Common questions security professionals ask when evaluating alternatives and competitors to Leonidas.
The most popular alternatives to Leonidas include GoSecure Titan® Adversarial Simulation, NetSPI Detective Controls Testing, Mitigant Cloud Attack Emulation, ZAIUX ZAIUX® Evo, and SafeBreach Exposure Validation Platform. These Threat Simulation tools offer similar capabilities and are frequently compared by security professionals evaluating their options.
