# Package Categories

In EVE, the following terms are used to name packages: 

<mark style="color:blue;">**Known**</mark>&#x20;

This type of package only holds samples that are already known and detected by security solutions and whose behavior is of low impact on the host.&#x20;

<mark style="color:blue;">**Challenger**</mark>&#x20;

This package has obfuscated samples. &#x20;

<mark style="color:blue;">**Interactive**</mark>&#x20;

It has samples that can use command and control (C2) callback functionality, or samples that can be interacted with in the EndPoint after emulation.&#x20;

<mark style="color:blue;">**Zero**</mark>&#x20;

It has samples created by EVE with malicious methodologies and a specific target, dangerous and challenging for security solutions. &#x20;

<mark style="color:blue;">**Uncategorized**</mark>&#x20;

If the user are not sure in which category to place the package, the user can use this option.&#x20;


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