---
page_type: sample
description: "This filter is a transaction-aware file scanner that examines data in files."
languages:
- cpp
products:
- windows
- windows-wdk
---

# AvScan File System Minifilter Driver

The AvScan minifilter is a transaction-aware file scanner. This is an example for developers who intend to write filters that examine data in files. Typically, anti-virus products fall into this category.

## Universal Windows Driver Compliant

This sample builds a Universal Windows Driver. It uses only APIs and DDIs that are included in OneCoreUAP.