> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/logging/appsec-aws-66.md).

# AWS CloudWatch Log groups not configured with definite retention days misconfiguration detected in c

## Rule Details

|                        |                                                       |
| ---------------------- | ----------------------------------------------------- |
| Cortex AppSec Rule ID  | APPSEC\_AWS\_66                                       |
| Category - Subcategory | Logging - Retention                                   |
| Provider               | AWS                                                   |
| Severity               | LOW                                                   |
| Framework              | CloudFormation, Serverless, Terraform, Terraform Plan |

## Impact

Enabling CloudWatch retention establishes how long log events are kept in AWS CloudWatch Logs. Retention settings are assigned to CloudWatch log groups and the retention period assigned to a log group is applied to their log streams. Any data older than the current retention setting is deleted automatically. You can change the log retention for each log group at any time. Log data is stored in CloudWatch Logs indefinitely by default, l. This may incur high unexpected costs, especially when combined with other forms of logging. We recommend you configure how long to store log data for in a log group to balance cost with compliance retention requirements.

## How to Fix

*Resource:* aws\_cloudwatch\_log\_group

* *Arguments:* Properties.RetentionInDays - (Optional) Specifies the number of days you want to retain log events in the specified log group. Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 3653, and 0. If you select 0, the events in the log group are always retained and never expire. \[source,go]

***

Resources: logGroup: Type: AWS::Logs::LogGroup Properties: ...

* RetentionInDays: 90

***


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/logging/appsec-aws-66.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.