Sigma InfoSec was founded in 2017 to provide enterprise-class security to small and mid-sized organizations. Sigma Shield unifies endpoint, cloud identity, email, and DNS security into a single managed platform, monitored 24/7 by agentic AI agents and human analysts. You only hear from us when a real threat demands action.
Most MDR services stop at the endpoint. Sigma Shield goes further — unifying endpoint EDR, Microsoft 365 & Entra protection, DNS filtering, vulnerability management, threat hunting, external attack surface monitoring, dark web monitoring, SIEM, and penetration testing. An agentic AI SOC and expert human analysts operate the entire stack 24/7/365, investigating, containing, and remediating threats before they become incidents.
Our agentic AI investigates every alert, gathering context across your endpoints, identities, email, and DNS. This empowers our human analysts to quickly and accurately triage alerts and contain true positives. Every alert is reviewed by an experienced human analyst who validates the finding, executes containment, and escalates to you only when action is required.
What’s in Sigma Shield:
- Endpoint Protection + EDR: SentinelOne Complete agents deployed and managed on every workstation and server.
- Microsoft 365 & Entra Security: Continuous monitoring for risky sign-ins, impossible travel, MFA tampering, inbox forwarding rules, OAuth app abuse, privilege escalation, and more.
- DNS Security: Every DNS query inspected before a connection is made, blocking command-and-control callbacks, phishing domains, and malicious destinations at the network edge.
- Vulnerability Management: Continuous, agent-based discovery of OS and third-party application vulnerabilities across Windows, Mac, and Linux, prioritized by real-world exploitability.
- External Attack Surface Monitoring: Continuous scanning of external IPs, domains, and cloud assets to uncover exposed services, forgotten subdomains, and misconfigurations.
- Proactive Threat Hunting: Hypothesis-driven hunts across endpoint, identity, email, and DNS telemetry.
- Managed SIEM: Compliance mapping, threat detection, and audit evidence generation.
- Dark Web Monitoring: Ingests recaptured criminal intelligence to identify stolen credentials and active session cookies
- Penetration Testing: Fully managed periodic or continuous penetration testing.
- Incident Response: Full containment, eradication, and recovery included at no extra cost — no retainers, no hourly fees.
- Collective Intelligence: When a threat targets one of our customers, every customer gets shielded immediately.
