Identity Security for Microsoft 365 & Google Workspace

Identity Threat Detection & Response

Protect the identity behind the login.

Cybercriminals don’t always need malware. Increasingly, they target user identities: stealing credentials, hijacking signed-in sessions, abusing OAuth apps and taking over legitimate Microsoft 365 or Google Workspace accounts. Once an attacker signs in, their activity can look just like a real employee’s.

TCI Technologies provides Managed Identity Threat Detection & Response (ITDR) that continuously monitors Microsoft 365 and Google Workspace identities, investigates suspicious behavior, and stops compromised accounts before they become a larger incident.

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What Is ITDR?

Identity Threat Detection & Response (ITDR) is cybersecurity focused on protecting user identities and detecting identity-based attacks. Our managed ITDR monitors Microsoft 365 and Google Workspace around the clock, backed by a 24/7 security operations center (SOC) that investigates suspicious activity, including:

Account takeover

Credential theft

Session hijacking

Suspicious sign-ins

Business email compromise

Rogue OAuth applications

Malicious inbox and forwarding rules

MFA tampering

Risky configuration changes

Unusual location and VPN activity

MFA Is Essential. But It Isn’t the Finish Line.

Multi-factor authentication is one of the most important controls you can deploy, but attackers now work around it by stealing session tokens, compromising OAuth apps and abusing previously stolen credentials. Here’s the difference ITDR makes:

Attack	⚠️ MFA alone	✅ MFA + managed ITDR
Stolen password	✅ Usually blocked	✅ Blocked, and the attempt is flagged
Stolen session token	❌ Attacker skips MFA entirely	✅ Session hijacking detected
Malicious OAuth app	❌ Keeps access after password resets	✅ Rogue app detected
Hidden forwarding rules	❌ Invisible	✅ Flagged as possible BEC
MFA tampering or settings changes	❌ Not monitored	✅ Detected and investigated
Who responds, nights and weekends	No one	A 24/7 security operations center

MFA+Identity Security+Continuous Monitoring+Managed Response

TCI’s Approach to Identity Security

Continuous Identity Monitoring

Your cloud identities are active around the clock. We collect and correlate sign-ins, policy changes and mail-flow activity to spot signs that an attacker has gotten in.

Account Takeover Detection

A compromised account can expose email, company data, applications and business relationships. We look for signals that a trusted identity is under an attacker’s control.

Suspicious Sign-in Detection

Not every successful sign-in can be trusted. We flag unusual authentication, unexpected locations and VPN activity for investigation.

Session Hijacking Detection

Attackers can steal a session token, taking over an already-signed-in session without a password or MFA prompt. That’s why MFA alone isn’t a complete strategy.

Rogue Application Protection

Cloud apps connect to Microsoft 365 and Google Workspace through OAuth permissions. A malicious app can keep access even after a password reset, so we watch for it.

Business Email Compromise Protection

What an Attacker Does Inside a Real Mailbox

BEC is most dangerous after an attacker gets into a legitimate mailbox. From there, they may:

✓Monitor existing conversations
✓Impersonate the account owner
✓Target your customers or vendors
✓Attempt fraudulent payment changes
✓Create hidden inbox rules
✓Hide security notifications
✓Forward messages outside the company
✓Stay inside without drawing attention

Managed ITDR watches for the malicious inbox and forwarding rules that often reveal BEC. Pair it with Email Security and Phishing Protection to stop attacks before they start.

ITDR Isn’t Just for Microsoft 365

Many identity security services stop at Microsoft. Our managed ITDR protects both Microsoft 365 and Google Workspace, so TCI can build the right strategy for your environment, or a combination of both. For Microsoft 365, our core ITDR coverage doesn’t require premium Microsoft licensing.

Microsoft 365	Google Workspace
Managed ITDR monitoring	Managed ITDR monitoring
Microsoft Entra ID and Conditional Access	Unexpected sign-in behavior
Multi-factor authentication	Sign-ins from suspicious infrastructure (e.g., data centers)
Privileged account protection	Malicious Gmail filters
Malicious inbox and forwarding rules	Attempts to hide security or MFA notifications
Email security and Managed EDR	Account takeover detection
Security awareness training and SIEM	Other suspicious identity activity

One provider. Multiple cloud environments.

From Suspicious Sign-in to Response

What happens when something looks wrong with an account:

Step 1MonitorMicrosoft 365 · Google Workspace · Cloud identities

Step 2DetectSuspicious sign-ins · Credential theft · Session hijacking · Rogue apps · Account takeover

Step 3InvestigateSecurity experts analyze and validate the threat

Step 4RespondContain · Remediate · Secure the account

Step 5ImproveMFA · Access controls · Configuration · User security

24/7 Identity Threat Detection

Identity attacks don’t keep business hours. If an account is compromised overnight, on a weekend or while someone is traveling, every hour gives the attacker more time inside. Our managed ITDR is backed by a 24/7 human-led SOC that investigates threats and guides the response.

Security that generates alerts is useful. Security backed by people who investigate them is better.