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

Understanding ASR rules

ASR rules restrict system behaviors often used by attackers, whether the intent is malicious or not.

By taking the determination of intent out of the equation, you significantly harden the device, albeit with the potential for disruption if legacy activities are still performed. Fortunately, you can plan for that disruption by deploying ASR rules in Audit mode (2) to review the scale of the problem before applying the rules in Block mode (1) or Warn mode (6). Warn mode, available for most but not all ASR rules since Windows 10 1809, allows the user to override the block for 24 hours at a time.

As general guidance, these three modes for ASR rules combined make a deployment road map:

Start in Audit mode, leveraging the data that clients produce to understand what problems may present themselves when enabled
After mitigating problems identified in Audit mode, or accepting the risks, proceed to Warn mode so that users can proceed without breaking...

The rest of the page is locked

You have been reading a chapter from

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

Personalised recommendations for you

Based on your interests and search pattern

Attacking and Exploiting Modern Web Applications

Attacking and Exploiting Modern Web Attacks will help you understand how to identify attack surfaces and detect vulnerabilities. This book takes a hands-on approach to implementation and associated methodologies and equips you with the knowledge and skills needed to effectively combat web attacks.

BookAug 2023338 pages

Automotive Cybersecurity Engineering Handbook

This Automotive Cybersecurity Engineering Handbook untangles the complexities of building secure automotive products and helps you to comply with cybersecurity standards. It provides practical tools, tips, and techniques coupled with real-world examples to enable you to create cyber-resilient automotive products with ease.

BookOct 2023392 pages

Official Google Cloud Certified Professional Cloud Security Engineer Exam Guide

This book will help you to design, develop, and operate security controls on Google Cloud as well as discover best practices for relevant security domains, including identity and access management, network, and data.

BookAug 2023496 pages

Cloud Penetration Testing for Red Teamers

The advent of cloud networks and the AWS, Azure, and GCP platforms has revolutionized how companies of all sizes in all industries do business online. This book will help you meet the emerging demand for pentesting as it guides you through the tools, techniques, and security measures used by pentesters and red teamers in the 2020s and beyond.

BookNov 2023298 pages

ISACA Certified in Risk and Information Systems Control (CRISC®) Exam Guide

ISACA Certified in Risk and Information Systems Control (CRISC®) Certification Guide is an enterprise IT risk management professional’s dream. With its in-depth approach and various self-assessment exercises, this book arms you with knowledge of every single aspect of the certification, and is a fantastic career companion after you’re certified.

BookSep 2023316 pages5

Burp Suite Cookbook

Burp Suite is an immensely powerful and popular tool for web application security testing. This book provides a collection of recipes that address vulnerabilities in web applications and APIs. It offers guidance on how to configure Burp Suite, make the most of its tools, and explore into its extensions.

BookOct 2023450 pages

Building and Automating Penetration Testing Labs in the Cloud

This hands-on guide will help you design and build a variety of penetration testing labs that mimic modern cloud environments running on AWS, Azure, and GCP. In addition to these, you will explore a number of practical strategies on how to manage the complexity, cost, and security risks involved when setting up vulnerable cloud lab environments.

BookOct 2023562 pages

Ethical Hacking Workshop

As cyber-attacks grow and APT groups advance their skillset, you need to be able to protect your enterprise against cyber-attacks. In order to limit your attack surface, you need to ensure that you leverage the same skills and tools that an adversary may use to hack your environment and discover the security gaps. This book will teach you how to think like a hacker, use state-of-the-art hacking tools, and protect yourself and your organizaiton.

BookOct 2023220 pages

Windows Forensics Analyst Field Guide

This book contains step-by-step processes to guide you in any investigation related to Windows OS. You’ll find out how to acquire evidence using multiple tools as well as examine and analyze the collected artifacts, while discovering multiple techniques used in real-world forensic incidents.

BookOct 2023318 pages

Implementing DevSecOps Practices

This book is a comprehensive, hands-on guide for individuals new to DevSecOps who want to implement DevSecOps practices successfully and efficiently. With its help, you’ll be able to shift security toward the left, enabling you to merge security into coding in no time.

BookDec 2023258 pages