Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

An introduction to AppArmor

This article was last updated 4 years ago.


Cyber attacks are becoming more sophisticated, attack frequency is on the rise, and the cost of cybercrime damage is projected to reach $6 trillion annually by 2021. Traditional defensive measures such as firewalls and intrusion detection systems that operate at the network perimeter are no longer enough to protect today’s distributed enterprise networks. Rather, a ‘defence in depth’ approach is required in order to protect all facets of an organisation’s digital infrastructure.

In an ideal world, applications would be free from security vulnerabilities but, once compromised, even a trusted application can become untrustworthy. AppArmor provides a crucial layer of security around applications. By providing the capability to whitelist an application’s permissible actions, AppArmor enables administrators to apply the principle of least privilege to applications. Once in place, AppArmor can halt attacks and minimise or prevent damage in the event of a breach.

This whitepaper provides a technical introduction to AppArmor, including:

  • Why a ‘defence in depth’ strategy should be employed to mitigate the potential damage caused by a breach
  • An explanation of AppArmor, its key features and why the principle of least privilege is recommended
  • The use of AppArmor in Ubuntu and snaps

In submitting this form, I confirm that I have read and agree to Canonical’s Privacy Notice and Privacy Policy.

Ubuntu cloud

Ubuntu offers all the training, software infrastructure, tools, services and support you need for your public and private clouds.

Newsletter signup

Get the latest Ubuntu news and updates in your inbox.

By submitting this form, I confirm that I have read and agree to Canonical's Privacy Policy.

Related posts

Space pioneers: Lonestar gears up to create a data centre on the Moon

Why establish a data centre on the Moon? Find out in our blog.

An overview of machine learning security risks

Data is at the heart of all machine learning (ML) initiatives – and bad actors know it. As AI continues to occupy the limelight of modern tech discourse, ML...

What’s new in security for Ubuntu 24.04 LTS?

We’re excited about the upcoming Ubuntu 24.04 LTS release, Noble Numbat. Like all Ubuntu releases, Ubuntu 24.04 LTS comes with 5 years of free security...