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Email Security & The Threat Within Your Office

Many people are surprised to learn that today’s number one cyber security threat is email. Deeply concerned about all levels of IT security, we recently published a white paper analyzing the various threats and how to thwart them, as well as how we here at DynaSis work to make our clients’ email accounts secure. In this white paper, we went over things like “zero trust” and how effective current phishing and spear-phishing techniques have become…and how to protect yourself by educating your employees.

Zero Trust as a Security Model

This is a critical part of email security in today’s world. Sorry. It might sound unfriendly, but when we trust no one, we are more vigilant. It’s not that we don’t trust people’s integrity, especially when it comes to our most trusted employees, it’s that we simply don’t have the luxury of trusting their judgment when they are up against brilliantly (unfortunately) crafted schemes designed to inflict harm. This is especially true in this world of BYOD (Bring Your Own Device To Work). Not only are the bad guys trying to work their way into your system through your company-owned devices, they are also working on getting in through the personally owned devices your people are using to access the company network.

In addition to phishing and spear-phishing (including expanded definitions), we go over email spam, viruses, malware, ransomware, social engineering and state-sponsored hacking. And we remind you, as we do here, that all this can start with a simple, single email.

Best Practices

But we don’t just leave you hanging. We review “best practices” and how they can be used to keep the bad guys out. We go over specifics like auto-listing, RFC check greylisting, global reputation checks, recipient validation & active directory, anti-spoofing, email firewalls, and policy controls. Whew! That’s a lot of stuff, but it’s all important.


As a managed IT support provider and after reviewing all the software available (and with 25 years-experience, we are experts at conducting reviews) we have chosen Mimecast for our clients. You can click here to check out Mimecast on our website, or here to read about it in our white paper. Check out our entire website at, or better yet, give us a call today at 678-373-0716.

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