App Transport Security

App Transport Security (ATS) is a privacy feature introduced in iOS 9. It's enabled by default for new apps and enforces secure connections.

On devices with iOS 9 or higher that don't have ATS disabled, this change will affect all apps built with Xcode 7 or higher and may affect your app's integration with the Google Mobile Ads SDK.

The following log message appears when a non-ATS compliant app attempts to serve an ad via HTTP on iOS 9 or higher versions:

App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file.

To ensure your ads are not impacted by ATS, do the following:

Update to version 7.15.0 or higher of the Mobile Ads SDK.
Add the NSAllowsArbitraryLoads, NSAllowsArbitraryLoadsForMedia, and NSAllowsArbitraryLoadsInWebContent exceptions to your app's Info.plist file to disable ATS restrictions.
```
<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
    <key>NSAllowsArbitraryLoadsForMedia</key>
    <true/>
    <key>NSAllowsArbitraryLoadsInWebContent</key>
    <true/>
</dict>
```
The NSAllowsArbitraryLoads exception is required to make sure your ads are not impacted by ATS on iOS 9 devices, while NSAllowsArbitraryLoadsForMedia and NSAllowsArbitraryLoadsInWebContent are required to make sure your ads are not impacted by ATS on iOS 10 and later devices.