> 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/analytics-alerts/alerts-by-name/aws-web-acl-deletion.md).

# AWS web ACL deletion

### Synopsis

| Field                | Value                    |
| -------------------- | ------------------------ |
| Activation Period    | 14 Days                  |
| Training Period      | 30 Days                  |
| Test Period          | N/A (single event)       |
| Deduplication Period | 1 Day                    |
| Required Data        | AWS Audit Log            |
| Detection Modules    | Cloud                    |
| ATT\&CK Tactic       | Defense Evasion (TA0005) |
| ATT\&CK Technique    | Impair Defenses (T1562)  |
| Severity             | Informational            |

### Description

Web ACL defines a collection of rules to use to inspect and control web requests. A Web ACL has been deleted.

### Attacker's Goals

To impair defense, this may assist data exfiltration.

### Investigative actions

* Verify if the identity intended to delete the Web ACL.
* Check what resources are affected by the Web ACL deletion.

### Variations

<details>

<summary>Successful AWS web ACL deletion by a non-admin identity</summary>

**Synopsis**

| Field             | Value                    |
| ----------------- | ------------------------ |
| ATT\&CK Tactic    | Defense Evasion (TA0005) |
| ATT\&CK Technique | Impair Defenses (T1562)  |
| Severity          | Low                      |

**Description**

Web ACL defines a collection of rules to use to inspect and control web requests. A Web ACL has been deleted.

**Attacker's Goals**

To impair defense, this may assist data exfiltration.

**Investigative actions**

* Verify if the identity intended to delete the Web ACL.
* Check what resources are affected by the Web ACL deletion.

</details>


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