What Is Identity Threat Detection and Response (ITDR)?

Identity Threat Detection and Response (ITDR) is the discipline and tooling for detecting and responding to attacks that target identity itself: stolen credentials, account takeover, privilege escalation, and lateral movement. As identity became the primary attack surface, prevention alone stopped being enough, and ITDR fills the runtime gap.

Why prevention is not enough

Strong authentication and least privilege reduce risk, but attackers still get in through phishing, infostealers, and session hijacking. ITDR assumes breach and watches for the behaviors that follow.

What ITDR covers

• Directory protection for Active Directory and Entra ID, including misconfiguration detection and fast recovery.
• Runtime detection of anomalous authentication and account takeover using behavioral analytics (UEBA).
• Attack-path analysis to find how an attacker could escalate or move laterally.
• SaaS identity risk and exposed-credential intelligence.

ITDR vs ISPM vs CIEM

ISPM is the preventive posture side (find risky configurations before attack). CIEM right-sizes cloud entitlements. ITDR is the detection-and-response side at runtime. Mature programs use all three.

Where to start

Browse ITDR vendors, compare Silverfort vs Semperis, and read how to choose an ITDR solution.