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Semperis Purple Knight is a free vulnerability assessment tool by Semperis. RoboShadow Vulnerability Scanner is a free vulnerability assessment tool by RoboShadow. Compare features, ratings, integrations, and community reviews side by side to find the best vulnerability assessment fit for your security stack.
CST VerdictBased on our analysis of core features, integrations, here is our conclusion:
Identity and access teams responsible for Active Directory or Entra ID hygiene should start with Purple Knight because it scans 185+ misconfigurations and risky admin patterns that your existing tools are likely missing, then delivers prioritized fixes instead of just a list of problems. The free model means no budget negotiation to run periodic scans across AD, Entra ID, and Okta simultaneously, making it genuinely low friction for gap assessment. Skip this if you need continuous runtime detection of lateral movement or persistence techniques; Purple Knight is a periodic scanner, not a monitor.
RoboShadow Vulnerability Scanner
Small to mid-market teams without dedicated vulnerability management staff should start here; RoboShadow Vulnerability Scanner's free pricing and automated daily scanning mean you get continuous coverage of both internal Windows apps and external attack surface with near-zero onboarding friction. The 65,535 port range and OWASP Top 10 web scanning handle the scan breadth most organizations actually need, not theoretical completeness. Skip this if you're running hybrid cloud infrastructure or need native integration with your existing SIEM; RoboShadow is built for teams doing straightforward network assessment, not orchestration across multiple environments.
Free AD, Entra ID, and Okta security assessment tool for vulnerability scanning
Vulnerability scanner for internal & external network security assessment
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Common questions about comparing Semperis Purple Knight vs RoboShadow Vulnerability Scanner for your vulnerability assessment needs.
Semperis Purple Knight: Free AD, Entra ID, and Okta security assessment tool for vulnerability scanning. built by Semperis. headquartered in United States. Core capabilities include Scans for 185+ indicators of exposure and indicators of compromise, Security assessment for Active Directory, Entra ID, and Okta, Security report card with scores across five categories..
RoboShadow Vulnerability Scanner: Vulnerability scanner for internal & external network security assessment. built by RoboShadow. headquartered in United Kingdom. Core capabilities include External vulnerability scanning with 65,535 port scanning, Internal Windows application vulnerability monitoring, CVE vulnerability reporting with PDF reports..
Both serve the Vulnerability Assessment market but differ in approach, feature depth, and target audience.
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