Cybersecurity · ITDR
Stop stolen logins with identity threat detection and response
Someone has an employee's password, or a stolen login session, and is signing in to Microsoft 365 as them. Identity threat detection and response (ITDR) spots that kind of sign-in and shuts it down: HTL 365 watches for suspicious logins, mailbox rules and MFA abuse, then revokes the session and locks the account before the attacker reads client files or sends a fake wire request.
- MBE certifiedNMSDC
- i-SIGMA memberSecure data destruction
- CSDS-ledCertified Secure Data Specialist
- NIST SP 800-88 Rev. 2Aligned media sanitization
What you get
Suspicious sign-ins caught
Logins from unusual places, impossible travel, and repeated MFA prompts are flagged and reviewed.
Hijacked sessions shut down
Stolen session tokens can skip MFA. We revoke sessions and force a fresh, verified login.
Mailbox tampering found
Hidden forwarding and delete rules, a common sign of a compromised account, are detected and removed.
Logins hardened
Phishing-resistant MFA and conditional access make stolen passwords far less useful.
How it works
- 01
Detect
Microsoft 365 and Entra ID sign-ins and account changes are monitored for signs of a takeover.
- 02
Respond
The account is locked, sessions are revoked and the password is reset.
- 03
Recover
We check what the attacker touched, remove what they set up and tell you what happened in plain English.
Find your gaps before an auditor does
A free IT & security assessment: we review your devices, Microsoft 365, backups and policies, then give you a plain-English action list.
Frequently asked questions
What is ITDR?
Identity threat detection and response monitors user accounts, such as Microsoft 365 logins, for signs of takeover and responds by locking the account and revoking access.
Doesn't MFA already stop stolen passwords?
MFA stops most password-only attacks, but attackers now steal login sessions, trick users into approving prompts or phish MFA codes. ITDR catches what gets past MFA.
How is ITDR different from MDR?
MDR watches devices, such as laptops and servers. ITDR watches identities, such as Microsoft 365 accounts. A stolen login can be used from the attacker's own computer, so device monitoring alone won't see it.
How common is credential theft?
Very. In the 2026 Verizon Data Breach Investigations Report, half of ransomware victims that had a prior credential leak were attacked within 95 days of it. Stolen logins remain one of the top ways attackers get in.
Related
Find your gaps before an auditor does
A free IT & security assessment: we review your devices, Microsoft 365, backups and policies, then give you a plain-English action list.