Despite major advances in cybersecurity, email continues to be the most common way attackers gain access to business systems.
Phishing, impersonation attacks and business email compromise (BEC) remain responsible for the majority of successful breaches. Attackers no longer rely on simple spam or malicious links. Instead, they use sophisticated social engineering techniques designed to bypass traditional email security tools and manipulate employees.
For organisations using Microsoft 365, the assumption is often that built-in protections are enough. While Microsoft provides strong baseline security, many organisations discover gaps when it comes to detecting advanced phishing attacks and identifying human risk behaviours. The reality is that modern attacks target people as much as technology.
Why traditional email security struggles to detect modern threats
Legacy secure email gateways were designed to block known threats such as malware, suspicious domains and malicious attachments. However, many of today’s attacks appear legitimate on the surface.
Examples include:
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Impersonation emails appearing to come from executives or trusted partners
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Phishing messages that mimic legitimate services like Microsoft or DocuSign
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Data loss incidents caused by employees sending sensitive information to the wrong recipient
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Supply chain attacks originating from compromised partner accounts
Because these emails often contain no obvious malware or suspicious links, they can bypass traditional filtering controls. This is where many organisations are left exposed.
The growing importance of human risk management in cybersecurity
Cybersecurity is no longer just a technology challenge. It is also a human behaviour challenge.
Employees are constantly making decisions about:
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Whether to trust an email
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Whether to share sensitive information
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Whether a message looks legitimate
Attackers exploit cognitive biases and normal communication patterns to trick users into taking actions that bypass security controls. Without visibility into how users communicate and share information, many organisations struggle to detect these threats until it is too late. Understanding and managing human risk has become a critical layer of modern security strategy.
Extending Microsoft 365 security with cloud email protection
To address these challenges, many organisations are adopting cloud-based email security solutions that work alongside Microsoft 365. Solutions like KnowBe4 Cloud Email Security use behavioural intelligence and machine learning to detect threats that traditional tools often miss. Rather than simply scanning emails for known malicious signatures, behavioural analysis helps identify when communication patterns look unusual or suspicious.
This approach allows organisations to detect:
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Impersonation attempts
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Abnormal communication behaviour
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Suspicious data sharing activity
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Potential insider risk
By analysing both inbound and outbound email activity, cloud email security can provide a much deeper layer of protection.
Key benefits of cloud email security
When implemented alongside Microsoft 365, cloud email security solutions can help organisations:
Detect sophisticated phishing attacks
Advanced behavioural analysis helps identify targeted attacks that bypass traditional filtering.
Prevent accidental data loss
AI-driven detection can identify when sensitive information may be sent to the wrong recipient.
Reduce investigation time
Security teams gain better visibility into potential incidents and suspicious behaviour.
Strengthen the human firewall
Insights into user behaviour help organisations identify training needs and security awareness gaps.
Together, these capabilities help organisations move from reactive email protection to a more proactive security posture.
Understanding your organisation’s email risk exposure
Many organisations are surprised when they first review their email risk exposure.
Hidden vulnerabilities can include:
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Impersonation attempts that were never flagged
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Users regularly interacting with phishing emails
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Sensitive data being shared outside the organisation
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Suspicious communication patterns between accounts
Without specialised tools or analysis, these risks can remain invisible. This is why many security teams are now conducting email security and human risk assessments to better understand where vulnerabilities may exist.
Discover your hidden email security risks
If your organisation relies on Microsoft 365, understanding your current level of protection is an important first step. Area9 is offering organisations a Free Cloud Email Security and Human Risk Management demo.
During this session, our team will:
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Review your Microsoft 365 email security posture
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Demonstrate how advanced phishing attacks bypass traditional controls
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Show how behavioural email security detects hidden threats
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Identify potential human risk vulnerabilities
This demo is designed to help IT leaders gain clearer visibility into their organisation’s email threat exposure and explore options for strengthening protection.
Book Your Free Cloud Email Security Demo
If you would like to see how your organisation’s email environment performs against modern threats, you can schedule a free demo with our team.
Book Your Free Demo or Learn More Here