> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cognite.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Understand security, reliability, and service availability

> This article discusses the importance of security in protecting sensitive data and the reliability of Cognite Data Fusion with measures for high availability and disaster recovery.

Additionally, it explains how service **availability** is continuously monitored and updated, and provides information on how to request **data restoration**.

## Security

Security is about protecting the **data** that your organization uses, stores, and transmits. This data might be sensitive data about customers, financial information, or critical line-of-business data for your organization.

Visit the [**Trust and security**](/cdf/trust/index) hub and [**Security**](/cdf/trust/security/security_intro) article to understand the shared responsibility between **you**, **Cognite**, and the **cloud service provider** to secure and protect your data.

You'll also find links to information about how you can **control access** to your data. Corporate compliance and certifications are on the [Cognite Trust Center](https://trust.cognite.com/).

Don't store client credentials or secrets in configuration files or source files. Instead, protect this information with GitHub secrets or Key Vaults.

## Reliability

Architecting for reliability ensures that Cognite Data Fusion (CDF) is **available** to end-users during incidents and quickly **recovers** from failures.

The [**Reliability**](/cdf/trust/security/reliability_intro) article helps you understand how we've designed the Cognite Data Fusion (CDF) cloud components for **high availability** and has recommendations for configuring on-premises components, like **extractors**.

You'll also learn about our setup for **disaster recovery**, **redundancy**, and **incident** handling.

## Service availability

We continuously release **software updates** and perform maintenance to keep services running smoothly and measure the **availability** and **performance** metrics on specific tenants or CDF clusters per month.

The [**Availability and business continuity**](/cdf/admin/availability_continuity) article explains how we measure availability and performance, and details our **backup frequency** and **retention** for each resource type. You'll also find information about how to request data to be **restored**.