You're reading from Mastering Microsoft 365 Defender

Product typeBook

Published inJul 2023

PublisherPackt

ISBN-139781803241708

Edition1st Edition

Concepts

Cybersecurity

Authors (2):

Ru Campbell

Viktor Hedberg

View More author details

Deploying EOP

As stated earlier in this chapter, the feature is available in all Exchange Online licenses and is therefore already available as soon as the first license lands in the tenant. But that is not enough since the default values could mean that you are exposing your organization to more threats than you might want.

In the previous section, we took a look at how EOP can filter inbound email messages; all of these steps are configurable to provide even better email security in your organization. We will discuss these options in the following sections.

Managing the Allow/Block list in your tenant

The connection filtering part of EOP could produce a false positive, meaning that an email gets flagged as spam when it is a legitimate email. It might also not react to a specific email and fail to tag it as spam when it should. This calls for modifying the tenant Allow/Block list. To do this, we head to the Microsoft 365 Defender portal once more at https://security.microsoft...

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Mastering Microsoft 365 Defender

Published in: Jul 2023Publisher: PacktISBN-13: 9781803241708

Authors (2)

Ru Campbell

Ruairidh (Ru) Campbell is a Microsoft Security MVP and leads Microsoft consultancy at Threatscape. At Threatscape, Ru develops, delivers, and manages offerings and professional services for cybersecurity, compliance, identity, and management. In the cybersecurity community, Ru runs the Microsoft 365 Security & Compliance user group and his blog (campbell.scot), regularly speaks at other user groups and conferences, and contributes to well-known industry publications such as Practical 365. Ru holds 14 Microsoft certifications and a B.Sc. (Distinction) in computer networking from the University of the West of Scotland. Away from cybersecurity, he is a petrolhead who enjoys heavy metal and hiking around Scotland with his wife.
Read more about Ru Campbell

Viktor Hedberg

Viktor Hedberg is a Microsoft Security MVP and senior consultant at Truesec. At Truesec, Viktor works with proactive security measures within the Microsoft sphere of technologies, by delivering workshops on best practices and by his deep technical expertise in these areas. In the cybersecurity community, Viktor runs his blogs at Truesec (Experts – viktor-hedberg). Alongside this, he is one of the hosts of the Swedish Windows Security user group, as well as a co-host of the Swedish podcast The Nerd Herd. He is a frequent speaker at both conferences and user groups around the world, focusing on matters of Microsoft Security. Viktor holds numerous Microsoft certifications, as well as being a Microsoft Certified Trainer. Away from cybersecurity, Viktor is a family man, spending most of his time with his wife and three kids, as well as enjoying football, both as a practitioner and as a fan. Heavy metal has been part of his life since his early teens.
Read more about Viktor Hedberg

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