Protect your data, reputation, and operations
without building an in-house security team.
Your organization relies on Microsoft 365 every day. Outlook, Teams, SharePoint, and OneDrive keep your staff connected, support collaboration, and store critical business information.
Unfortunately, these same tools are common targets for cybercriminals. Businesses and nonprofits are often targeted because they typically don’t have dedicated cybersecurity staff monitoring their environment around the clock.
Our service ‘Managed Detection and Response (MDR) for Microsoft 365’ provides continuous security monitoring by experienced cybersecurity professionals.
While you focus on serving clients, growing your business, or supporting your community, we monitor your Microsoft 365 environment 24/7 and respond to suspicious activity before it becomes a security incident. Whether you manage a law firm in Minneapolis, a nonprofit in St. Paul, or a growing business anywhere in the Twin Cities, our team helps protect the Microsoft 365 tools your organization relies on every day.

What Does MDR Service Do?
Think of a traditional antivirus as a strong lock on your office door. It’s an important first line of defense, but if a burglar picks the lock or steals the key (your account password), the lock can’t tell the difference and will let them in.
Managed Detection and Response (MDR) for Microsoft 365 is like having a trained security guard monitoring your surveillance cameras 24/7. They immediately spot suspicious activity, intervene in real time, and remove the intruder before they can cause serious damage.
Microsoft 365 Built-in Protection Has Limits
Microsoft includes built-in security tools, but technology alone doesn’t stop cyberattacks. Security tools can generate alerts, but someone still has to investigate them, determine whether they’re legitimate, and respond quickly when a real threat appears.
Cyberattacks don’t happen during business hours, many occur overnight, on weekends, or during holidays, when no one is actively monitoring your systems. Many organizations simply don’t have the time or internal resources to review hundreds of security notifications every minute. Meanwhile, attackers use stolen credentials, compromised email accounts, and sophisticated phishing campaigns that often appear completely legitimate.

Think of MDR Like Having a Security Team on Duty 24/7
Microsoft security tools are like having strong locks on your office doors. Our MDR service adds experienced security professionals watching those doors around the clock. If someone attempts to use a stolen key—or behaves suspiciously after entering—we notice it immediately, investigate the activity, and take action before the situation escalates.
How CSI Tech Corp Protects Microsoft 365
With MDR 365 Service
Our team doesn’t simply notify you when something looks suspicious—we actively investigate and respond.
Account Compromise Protection
If someone attempts to access an employee’s Microsoft 365 account from an unusual location or in a suspicious manner, we investigate immediately and can block access before additional damage occurs.
Unauthorized Email Activity
We look for suspicious activity within compromised mailboxes, such as unusual forwarding rules or unexpected email activity, and investigate before ot can cause further harm.
Advanced Phishing Protection
We detect and contain phishing attacks designed to steal passwords, redirect payments, or impersonate employees and executives.
Microsoft 365 Data Protection
We monitor unusual access to sensitive files and help protect confidential business information, donor records, financial documents, and other critical data.
Real Twin Cities Case
Before working with CSI Tech Corp, one of our clients experienced a Microsoft 365 security incident. They opened a phishing email without knowing it and the compromised account began to send fake invoices out to their clients. This led to lots of questions, stalled business and could have cost real people real money.
With Managed Detection and Response (MDR) service for Microsoft 365 in place, our security team could identify suspicious activity like this sooner, allowing to respond quickly and help limit the business impact.
We help meet Microsoft 365 security and compliance expectations while protecting donor information, grant-related data, and the trust your supporters place in your organization.
What's Included in Our Microsoft MDR service
Our MDR service combines 24/7 monitoring, expert investigation, and rapid response to suspicious activity across your Microsoft 365 environment. From detecting unusual behavior to taking action when a threat is found, our security team handles the critical work behind the scenes.

Keep Microsoft 365 Protected
Without Managing Security Yourself
You don’t need to replace Microsoft 365 or hire a dedicated cybersecurity team. CSI experts will deploy continuous monitoring across your Microsoft 365 accounts with minimal disruption to your daily operations.
Start with a complimentary Microsoft 365 security assessment or with a 15-minute call with our cybersecurity specialists.
Your Questions, Answered
What is Microsoft 365 Managed Detection & Response (MDR)?
Microsoft 365 MDR is a managed cybersecurity service that continuously monitors your Microsoft 365 environment for suspicious activity. Security experts investigate alerts, respond to threats, and help protect your organization from account compromise, phishing attacks, ransomware, and data breaches.
How is MDR different from Microsoft Defender?
Microsoft Defender provides powerful security tools, but someone still needs to monitor alerts, investigate suspicious activity, and respond to incidents. MDR combines Microsoft’s security technology with a team of cybersecurity professionals who actively monitor and manage your environment 24/7.
Do small businesses really need MDR?
Yes. Small businesses are increasingly targeted because attackers know many organizations have limited cybersecurity resources. MDR provides enterprise-level monitoring and response without the cost of hiring an in-house security team.
Is MDR only for Microsoft 365?
This service focuses on protecting Microsoft 365 services, including Outlook, Exchange Online, Teams, SharePoint, OneDrive, and user identities. Depending on your needs, it can also be integrated with endpoint protection and other Microsoft security solutions.
How quickly are threats investigated?
Our team continuously monitors your Microsoft 365 environment and begins investigating suspicious activity as soon as it’s detected. Fast response helps reduce the risk of data loss and business disruption.
Can MDR help protect nonprofit organizations?
Absolutely. Many nonprofits store sensitive donor information, financial records, and grant-related data in Microsoft 365. MDR helps protect that information while supporting your organization’s security and compliance goals.
Will MDR interrupt our employees’ work?
No. Deployment is designed to minimize disruption. In most cases, employees continue using Microsoft 365 as usual while monitoring runs in the background.
Do we need to replace Microsoft 365?
No. MDR is built specifically to enhance the security of your existing Microsoft 365 environment.
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