Microsoft 365 Security
Comprehensive security monitoring and hardening for your entire Microsoft 365 environment: email, SharePoint, Teams, and Azure AD.
Microsoft 365 security services mean continuously monitoring and hardening your M365 tenant - Exchange Online, SharePoint, OneDrive, Teams, and Entra ID - against the identity and email attacks that make it the most targeted surface most organizations own.
Microsoft 365 is the backbone of modern business productivity - and one of the most targeted attack surfaces. SOClogix provides comprehensive security monitoring and hardening for your entire M365 environment, covering Exchange Online, SharePoint, OneDrive, Teams, and Azure Active Directory to keep your data and users safe.
Email remains the number one attack vector for businesses of every size. Our email security services go beyond built-in Microsoft protections to detect sophisticated phishing campaigns, business email compromise attempts, and malicious attachments before they reach your users. We monitor mailbox rules, forwarding configurations, and delegation changes that often signal an account takeover in progress.
Beyond email, we secure your collaboration platforms by monitoring SharePoint and OneDrive for unauthorized sharing, applying data loss prevention policies, and hardening your Azure AD configuration with conditional access policies, MFA enforcement, and suspicious sign-in detection. Our team continuously monitors for impossible travel events, risky sign-ins, and privilege escalation attempts across your tenant.
What's Included
Attack surface we cover
Exchange Online
Phishing and business email compromise land here first. We watch for malicious inbox rules, hidden forwarding, and delegation changes that quietly move mail to an attacker.
Entra ID (Azure AD)
Account takeover, token and session theft, impossible-travel and risky sign-ins, and privilege escalation into roles the account was never meant to hold.
SharePoint & OneDrive
Over-permissive external sharing, anonymous links that outlive the project that created them, and bulk data exfiltration from sync clients.
Teams
External federation abuse, where an outside tenant chats your users directly, and malicious file sharing through channels most security tooling never inspects.
OAuth & App Consent
Illicit consent grants and rogue third-party apps that hold standing tenant permissions - access that survives a password reset and MFA.
Admin & Conditional Access
Gaps in MFA coverage, standing privileged roles nobody reviews, and conditional access policy designed with exclusions wide enough to walk through.
How we secure your tenant
Tenant Assessment
We audit your tenant configuration end to end: conditional access policy, MFA coverage, external sharing and guest access, admin role assignments, and the existing signs of compromise most reviews skip.
Hardening
We close the gaps the assessment found - conditional access design, MFA enforcement, anti-phishing and anti-spoofing policy, and sharing controls scoped to how your business actually works.
24/7 Monitoring
SOC analysts watch sign-in, mailbox, and sharing telemetry continuously. Alerts are triaged by people, not forwarded to an inbox nobody reads.
Response
When an account is compromised we contain it: disable the account, revoke sessions and tokens, remove attacker persistence, then investigate root cause so it does not recur.
Frequently asked questions
Is Microsoft 365 secure by default?
Microsoft 365 ships with strong security building blocks, but the defaults are permissive. New tenants commonly allow legacy authentication, broad external sharing, and anonymous links, with no conditional access design and incomplete MFA coverage. The platform is not the weak point - configuration is where breaches happen.
Does Microsoft 365 need third-party security monitoring?
Microsoft supplies the telemetry; it does not supply the analysts. Alerts that nobody triages are not detection - they are a record of what you missed. A SOC watches sign-in, mailbox, and sharing telemetry 24/7, separates the real incidents from the noise, and acts on them while the attacker is still in the tenant.
What is business email compromise (BEC)?
BEC is an attack where the adversary gains access to a mailbox or spoofs a trusted sender in order to redirect payments or harvest data. In M365 it usually surfaces as anomalous mailbox rules, silent forwarding to an external address, or impossible-travel sign-ins on an account that has never left the state.
Do we need this if we already have Microsoft E5?
E5 licensing gives you the tooling. This service operates it - tuning the policy, triaging the alerts, and responding when something is real. Licensing is not an operating model, and unconfigured or untriaged E5 features protect nobody.
Can you tell if our tenant is already compromised?
Yes. The tenant assessment reviews mailbox rules, forwarding configurations, OAuth consent grants, admin role assignments, and sign-in history for signs of existing compromise. Attackers frequently sit in a tenant for weeks, and this is often where we find them.
How fast can you respond to a compromised M365 account?
SOClogix operates a contractual 15-minute P1 response SLA. Containment includes disabling the account, revoking active sessions and tokens so stolen credentials stop working immediately, and removing attacker persistence such as inbox rules, forwarding, and consented apps.
Looking for something else?
Trying to get more out of your Microsoft licensing? This page covers our managed M365 security service: continuous monitoring, hardening, and response for your tenant. If what you need is help deploying and tuning the broader Microsoft security stack - Defender, Sentinel, Purview, and Intune - to maximize your E3 or E5 investment, see Microsoft Security Stack Optimization.
Key Benefits
- Protect your most-used productivity platform
- Stop phishing and business email compromise
- Prevent data leakage across cloud services
- Maintain compliance within your M365 tenant
- Get expert management without in-house specialists
Get Started
Talk to our team about securing your Microsoft 365 environment today.
Request a ConsultationCall (443) 409-5426Free Risk Assessment
25 questions across 5 security domains. Get a personalized PDF report emailed to you instantly.
Find Out Where Your M365 Tenant Stands
Free M365 security assessment. We audit your tenant configuration, identify exposure, and give you a prioritized remediation plan - no obligation.
What we check in your tenant:
- Conditional access policy gaps
- MFA coverage and enforcement
- External sharing and guest access settings
- Email security and anti-phishing rules
- Admin role assignments and privileged access
Case Study
Tracing an M365 Account Lockout to a Hidden OneDrive Scheduled Task
Active attacker foothold uncovered through M365 forensics - how our team traced a compromised account back to a persistent backdoor.
Get Microsoft 365 Security Pricing
We scope every engagement to your environment and team size. Get a written quote within one business day - no obligation, no lengthy sales process.
Quote delivered within 1 business day. Annual and monthly terms available.