# Cis Ubuntu1204 V110 8 3 1

> Install AIDE

- Skill: `cyberstrikeus/cis-ubuntu1204-v110-8-3-1` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-ubuntu1204-v110-8-3-1`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-ubuntu1204-v110-8-3-1/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-ubuntu1204-v110-8-3-1

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# 8.3.1 Install AIDE (Scored)

## Profile Applicability

- Level 2

## Description

In some installations, AIDE is not installed automatically.

## Rationale

Install AIDE to make use of the file integrity features to monitor critical files for changes that could affect the security of the system.

## Audit Procedure

### Using Command Line

Run the following to ensure `aide` is installed:

```bash
dpkg -s aide
```

## Expected Result

Ensure package status is `installed ok installed`.

## Remediation

### Using Command Line

Install AIDE:

```bash
apt-get install aide
```

Initialize AIDE:

```bash
aideinit
cp /var/lib/aide/aide.db.new /var/lib/aide/aide.db
```

**Note:** The prelinking feature can interfere with AIDE because it alters binaries to speed up their start up times. Run `/usr/sbin/prelink -ua` to restore the binaries to their prelinked state, thus avoiding false positives from AIDE.

## Default Value

AIDE is not installed by default.

## References

- CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0

## Profile

Level 2 - Scored