How Managed IT Services Keep Your Microsoft 365 Tenant including Identity, SharePoint, Exchange and Teams Safe from Today’s Modern Threats

In today’s digital world, Microsoft 365 has become the IT backbone for many small and medium Australian businesses. Businesses rely on Microsoft 365 for email, communications, file storage and sharing, it becomes their single source of truth.

With the convenience provided there are also inherent security risks. Especially around how data is accessed and shared, who can access what data, and what security measures are in place to protect this data.

As a managed service provider, we parter with our clients to guide them through these challenges and provide ongoing collaborative support. Through suring up Microsoft’s own policies and settings, to leveraging solutions such as Backup, Advanced email security and SaaS alerts for real time detection and response. We ensure your business stays protected without overwhelming your team.

 

Critical security challenges we address

SharePoint Permissions

SharePoint, OneDrive, Teams, the Microsoft 365 ecosystem can be a complex beast. The problem becomes complexity, with various permission levels and ways to provide access. Access can be granted at site levels, folder or even file levels. It can be done for individuals or groups and without management and oversight, permissions can become ad hoc and get out of hand quickly.

Even more important with the introduction of AI and CoPilot, you want to ensure your users permission levels are accurate. As the AI has the same level of access as the user themselves. For Instance, long forgotten public company sites can be found by the AI during its discovery for staff.

We aim to streamline site and access levels, using groups and role-based permissions through collaboration with managers and owners.

Sharing Links

Sharing links can add a lot of convenience and benefit to SharePoint and OneDrive.  This can however open one of the biggest security risks, anyone sharing links. Without policy and site restrictions, staff could accidentally expose folders of sensitive data to anyone.

Once your SharePoint structure is decided, you should then work out which sites should allow sharing and to what level. You can further restrict this by only allowing certain groups of users to share from sites. The standard SharePoint sharing levels are:

“Anyone” Links (Anonymous): No authentication required, anyone with the URL can access the file, anywhere. Links can be forwarded on with no tracking.

“New and Existing Guests”: External users must authenticate (recommended default for most organisations). Provides visibility while enabling collaboration. Links are locked to specific external email addresses invites by your staff.

“Existing Guests Only”: Sharing is limited to pre-approved external users already in your tenant. IT must manually add new guests for you.

“Only People in Your Organization”: External sharing completely disabled, provides maximum security for sensitive data. Think Administration or HR sites.

In situations where an anyone link is required, the recommended option is to setup a separate sharing site. Enforcing link expiration and only being used as a last resort. You can also set a manual password to provide access.

Exchange Email Security

Email security remains one of the primary attack vectors for threat actors. Phishing and email-based attacks are becoming increasingly sophisticated with the use of generative AI like ChatGPT and Claude.

Together with Microsoft’s own security offering and policies, we layer a sophisticated email security on top to further protect our clients. Going far beyond traditional spam filters, using generative AI to understand language, intent, and visual indicators of phishing attempts.

Our solution can even scan images such as QR codes and determine if the link attaches to them is malicious.

Some common security gaps we see in exchange include:

  • Mailbox delegation permissions granted without oversight
  • Lack of advanced phishing protection beyond basic spam filters
  • No real-time user coaching to help employees spot threats
  • Insufficient monitoring of unusual email activity or account takeover attempts

Access Control and Auditing

Identity is the new attack vector. With our reliance on the cloud and access from anywhere, it’s more important than ever to protect your Microsoft 365 tenant and users. Some of the ways we accomplish this for clients is:

We use a sophisticated cloud detection and response solution to actively monitor the Microsoft 365 tenant for any indicators of suspicious activity. As well as enforcing strong MFA for all accounts, no SMS or email codes. A simple thing any business with Conditional Access can do is restrict logins to Australia and block legacy connections, as every layer helps.

 

Our Managed IT Service Approach: Proactive Protection with Advanced Tools

At times, Microsoft 365 may can treated as a set-and-forget solution. However, this approach leaves you vulnerable and creates significant security gaps in your tenant.

Our managed services provide continuous security management using a layered approach that combines best practices, advanced monitoring solutions, and user-friendly protection. Together with Microsoft’s inbuilt policies and security we can provide a foundation of security for your business. Layers are the name of the game in modern security.

SharePoint Security Management

This is what we do and our recommendations for SharePoint in Microsoft 365.

  1. Disable “Anyone” Links by Default. We set your default sharing to ” New and Existing Guests” helping to prevent accidental anonymous sharing
  2. Least Privilege Access – Staff receive only the minimum permissions needed for their roles, reducing the impact if an account was to be compromised
  3. Tenant-Level Configuration – Configuring company-wide settings in the SharePoint Admin Centre, establishing security baselines that individual sites cannot exceed
  4. Managing Security at the Site Level – We control permissions primarily at the SharePoint site level, simplifying administration and ensuring consistent access with easy visibility
  5. Setting Sharing Links to expire – Temporary access links should expire automatically, reducing the risk of old links remaining active

Continuous Threat Detection and Response

We can integrate with your Microsoft 365 tenant to provide real time cloud detection and response that monitors your Microsoft 365 environment, catching threats before they impact your business. As Identity has become the new target, this enables us to have complete visibility into the cloud environment.

This includes:

  1. Real-Time Security Monitoring – Machine learning patterns detect and identify suspicious login behaviour, rule manipulation and account indicators of compromise. Creating alerts based of this intelligence
  2. Automatic Account Lockdown – If a breach is detected, we can automatically lock affected accounts, giving you time to respond before damage occurs
  3. Automated Sharing Controls – Suspicious end-user file sharing activity can be audited and reviewed
  4. Unified Dashboard – Provides us comprehensive visibility into security events across your Microsoft 365 environment

Modern Advanced Email Security

Our GenAI-Powered Phishing Defence provides advanced email security that goes far beyond traditional spam filters, using generative AI to understand language, intent, and visual indicators of phishing attempts.

This includes:

  1. AI-Powered Phishing Detection – The system will use Computer vision and AI analyse to detect impersonation and ransomware indicators. The system can “look” at the email from an end user’s perspective to detect sophisticated threats
  2. Real-Time User Coaching – In addition to periodic training, the system coaches users in real-time across any device or email client, helping them make safe decisions when they matter most. Our interactive banners change based on detections style and severity. Using the banner guides the user through a seamless reporting experience
  3. Brand and User Impersonation Defence – Detects sophisticated attackers forging trusted brands or trying to impersonate trusted team members
  4. Advanced Attachment and Link Analysis – Detects zero-day malware that traditional filters miss by scanning links and attachments in emails before a team member clicks them
  5. Graymail Protection – “Super” spam filtering for newsletters and bulk mail. Staff can easily add emails to the spam group
  6. Phishing Email Triage – If a team member reports an email, we can check if it was sent to any other staff. In the case it was, we can remove the email from all affected inboxes

 

Conclusion: We simplify complex security for you

In today’s business environment, cybersecurity isn’t just about preventing attacks. It’s about building trust with your customers, partners, and vendors. When you can demonstrate a proactive and consistent data protection approach, you show clients and your team that the business is serious about security. This also helps to create a Cybersecurity culture within your Teams, you want your staff to have that buy in.

The reality is simple. Microsoft 365 is powerful, but it requires best practice configuration and ongoing management to be truly secure.

That’s what our managed IT service delivers: we put the layers of security in place that protect your business without overwhelming your team.

We handle the complexity so you can leverage Microsoft 365’s collaboration benefits without the security risks. Your data stays protected, your team stays productive, and you gain peace of mind.