---
title: onsecuritypolicyviolation
framework: WebKit JS
role: symbol
role_heading: Instance Property
platforms: [Safari Desktop 10.0+, Safari Mobile 10.0+]
path: webkitjs/document/1633184-onsecuritypolicyviolation
---

# onsecuritypolicyviolation

## Declaration

```data
attribute EventHandler onsecuritypolicyviolation;
```