For many Australian businesses, Microsoft 365 has become an essential part of everyday operations. Email, documents, calendars, Teams, SharePoint and OneDrive can all be managed from one platform, making it easier for employees to work from almost anywhere.
But while Microsoft 365 includes strong security features, simply having a Microsoft 365 subscription doesn't mean your business is automatically protected.
Cybercriminals continue to target Microsoft 365 accounts because they can provide direct access to business email, documents, customer information and other sensitive data. If an account is compromised, the consequences can extend well beyond a single employee.
The good news is that businesses can take practical steps to significantly reduce this risk.
Why Microsoft 365 accounts are a target.
Business email accounts contain a huge amount of valuable information.
An attacker who gains access to an employee's Microsoft 365 account may be able to read emails, access documents, impersonate the employee, monitor conversations or use the account to launch further attacks. For example, a compromised email account could be used to identify upcoming invoices and then send a convincing message requesting that payment be redirected to a fraudulent bank account.
The attacker may not need to break into your entire network. They simply need to gain access to one account.
This is why securing Microsoft 365 should be considered an important part of your overall cybersecurity strategy.
Strong passwords aren't enough.
One of the most important protections for Microsoft 365 is multi-factor authentication (MFA). MFA requires users to provide an additional form of verification when signing in, meaning a stolen password alone isn't necessarily enough for an attacker to gain access. However, businesses shouldn't stop at simply enabling MFA.
Security settings need to be configured correctly, accounts should be reviewed regularly and higher-risk users, such as administrators, should have stronger protections in place. Where possible, businesses should also consider phishing-resistant authentication methods for their most sensitive accounts.
Backups still matters.
Microsoft 365 provides excellent availability, but availability isn't the same as having a comprehensive backup strategy.Businesses should consider what would happen if important emails, files or SharePoint data were accidentally deleted, encrypted or compromised. A separate, properly managed backup solution can provide another layer of protection and help businesses recover important information when something goes wrong.
Backups should also be regularly tested. A backup that cannot be successfully restored when needed isn't much of a backup at all.
Email is still one of the biggest risks.
Email remains one of the most common ways attackers target businesses. Phishing emails can attempt to steal passwords, deliver malware or trick employees into making payments. Modern phishing attacks can also look highly professional, making them much harder to identify.
Microsoft 365 includes tools that can help detect suspicious emails, but these protections need to be properly configured and monitored. Businesses should consider controls such as spam and phishing protection, email authentication and policies designed to reduce the risk of malicious links and attachments.
Employee awareness is also critical. Even the best technology can struggle if an employee is convinced to hand over their credentials or approve a suspicious request.
What should your business do?
If your business relies on Microsoft 365, it's worth asking a few simple questions:
- Is MFA enabled for every user?
- Are administrator accounts properly protected?
- Are former employees removed promptly?
- Are users given only the access they actually need?
- Is email security configured correctly?
- Are suspicious sign-ins being monitored?
- Are Microsoft 365 files and emails properly backed up?
- Are employee devices protected?
- Have your Microsoft 365 security settings been reviewed recently?
If you're unsure about the answers, it may be time for a security review.
Secure Microsoft 365. Protect your business.
Microsoft 365 is a powerful platform, but its security depends on how it is configured, managed and monitored. At OTIRO IT, we help Australian businesses strengthen their Microsoft 365 environments and protect the systems they rely on every day. From Microsoft 365 management and email security to endpoint protection, offsite backups and the implementation of the Essential Eight, we provide practical cybersecurity solutions tailored to your business.
Our goal isn't simply to protect your data. It's to give you the confidence to focus on running and growing your business, knowing your technology is being properly looked after.
If you're unsure whether your Microsoft 365 environment is secure, talk to OTIRO IT about how we can help protect your business.
For more information explore the Otiro IT website or to speak to a professional call 08 720 6080