# System-Wide Developer Machine Scanning

## Shift Left: Protection at Every Stage of Development

Performing scans in single project repositories or in CI/CD and Production is insufficient to provide true end-to-end security. Safety CLI 3 allows developers to detect *all* Python installations and vulnerabilities in their environment by performing system-wide scans of development machines.

Once Safety CLI is installed and you have authenticated, we follow a similar process to the normal directory-specific **`safety scan`**.

In your terminal, run the following command:

```
safety system-scan 
```

Running **`safety system-scan`** will:

* Scan your entire development machine for Python package files, requirements files and Python virtual environments, indexing all the packages found.
* Conduct a security analysis of these packages against known security vulnerabilities and malicious package lists.
* Identify known vulnerabilities in these packages, including their location and version.
* Provide fix recommendations.

Once complete, your terminal will show a summary of the vulnerable packages that were found and recommended actions.

<figure><img src="/files/eivWHhsrgdUvZHYbyLJQ" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
If the safety `system-scan` command is not found, **or your safety version is less than 3.0,** you need to [install Safety version 3](/safety-docs/safety-cli/installation-and-authentication.md) before continuing below.
{% endhint %}


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