Email Security Blog

5 Reasons Microsoft Defender Isn’t Enough

The answer is no. Today’s sophisticated email phishing scams – which include uber-costly Business Email Compromise (BEC) tactics – are no match for Microsoft Defender. That’s why companies who are serious about protecting their revenue, data, customers, and employees from hackers and fraudsters know that introducing a third-party email security solution as another layer of their cybersecurity stack is needed.

INKY is the industry’s best third-party solution for the security of your email. Driven by computer vision, machine learning, and artificial intelligence, INKY blocks malicious emails that Microsoft Defender can’t detect. Cost-effective and powerful, INKY works downstream from Microsoft Defender, understanding its deficits and picking up the slack to make sure dangerous phishing emails don’t make their way to the inboxes of your employees.

Whether you like to believe it or not, the security of your company is constantly at risk. New and complex email phishing scams are created every day. Why? Because hacking into your company and stealing data, downloading ransomware, conning employees into handing over company revenue is all part of a thriving billion-dollar industry. Take a look at some of the reasons why Microsoft Defender is not enough to completely protect your business from a cyberattack, and why you should be considering INKY. 1,2

Phish Catching

Defender has broad protection that covers the various modules in O365, however, results have shown that it’s anti-phishing software is too elementary to catch more complicated cyberthreats.1,2

Rewriting Dangerous Links

Defender looks up URLs in its threat feeds to determine if they are dangerous. INKY goes beyond that, directly analyzing content in real-time, to determine that it is malicious – even if the link has never reported before.


Human error is what leads to costly phishing disasters. Microsoft Defender is known for its simplicity, in fact, most users never to see Defender's interface, beyond the occasional alert. INKY takes a completely different approach by attaching a banner to each and every email. The color of the banner alerts the recipient of the email’s threat level and communicate the details of the issue at hand. Each dangerous or suspicious email educates employees of the specifics. It’s like a subtle form of training is baked into every email protected by INKY’s anti-phishing capabilities.

Spear Phishing

Defender’s simple address matching just isn’t enough to know if the sender of an email is impersonating someone. Because INKY sits downstream from Defender, it catches what is missed. To do so, INKY uses artificial intelligence, social graphing, machine learning, and behavioral profiling to catch the slippery spear phish.

Zero-Day Attacks

Due to their very nature of being a previously unidentified phishing scam, catching Zero Day Attacks require a great deal of know-how. Microsoft Defender lack INKY’s ingenuity when it comes to computer vision, artificial intelligence and machine learning and struggles to identify new phishing campaigns.

Signs of email phishing fraud are harder to detect than ever and companies relying on Microsoft Defender as their primary email security filter are setting themselves up for disaster. In fact, one single focused phishing attack can cripple an organization overnight. INKY has the innovation and expertise to fight phishing in the office and also on mobile devices outside of the office.

Take your company’s cybersecurity to a new height by investing in a cloud-based email security service that is designed to catch everything, including spam, malware, phishing threats, and more. It can save your company hundreds of thousands of dollars in revenue, not to mention the trust and allegiance of your customers. The easiest way to start is by seeing the technology in action. Schedule a free demonstration of INKY’s uniquely amazing phish-fighting capabilities. Schedule a demo today.

To learn more about the role Microsoft Defender plays in and advanced email security stack by reading our Solution Brief, entitled INKY vs. Microsoft Defender for Office 365.



INKY® is the emerging hero in the war against phishing. An award-winning cloud-based email security solution, INKY® prevents the most complex phishing threats from disrupting or even immobilizing your company’s day-to-day business operations. Using computer vision, artificial intelligence, and machine learning, INKY® is the smartest investment you can make in the security of your organization. INKY® is a proud winner of the NYCx Cybersecurity Moonshot Challenge and finalist in the 2020 RSAC Innovation Sandbox Competition. Learn more about INKY® or request an online demonstration today.



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