To Mitigate Dangerous WebView API Usage:

### Primary Defense – Disable Mixed Content:
```java
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    webView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_NEVER_ALLOW);
}
```
- Prevents HTTPS pages from loading insecure HTTP resources
- Stops man-in-the-middle attacks via injected scripts

### Restrict File Access:

```java
webView.getSettings().setAllowFileAccess(false);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
    webView.getSettings().setAllowFileAccessFromFileURLs(false);
    webView.getSettings().setAllowUniversalAccessFromFileURLs(false);
}
```
- Blocks file:// scheme exploitation
- Prevents local file and database leakage

### Harden JavaScript Interface:

```java
webView.removeJavascriptInterface("interfaceName"); // Remove if not needed
// If required, only expose minimal @JavascriptInterface methods
```
- Avoids remote code execution via addJavascriptInterface()
- Use WebMessagePort or allowlist trusted origins if JS bridge is required

### Additional Protections:

- Disable WebView debugging in production:
```java
WebView.setWebContentsDebuggingEnabled(false);
```

- Enable Safe Browsing (API 26+):

```java
WebView.enableSafeBrowsing(context);
```

By disabling mixed content, restricting file access, and securing JavaScript bridges, you eliminate the primary attack vectors associated with dangerous WebView APIs while keeping the app’s WebView functionality secure.