Updated expired link in docs/security (#2972)

docs/security.md

@@ -83,7 +83,7 @@ The reason deep links are not secure is because there is no centralized method o
 
 There is nothing stopping a malicious application from hijacking your deep link by also registering to the same scheme and then obtaining access to the data your link contains. Sending something like `app://products/1` is not harmful, but sending tokens is a security concern.
 
-When the operating system has two or more applications to choose from when opening a link, Android will show the user a modal and ask them to choose which application to use to open the link. On iOS however, the operating system will make the choice for you, so the user will be blissfully unaware. Apple has made steps to address this issue in later iOS versions (iOS 11) where they instituted a first-come-first-served principle, although this vulnerability could still be exploited in different ways which you can read more about [here](https://blog.trendmicro.com/trendlabs-security-intelligence/ios-url-scheme-susceptible-to-hijacking/). Using [universal links](https://developer.apple.com/ios/universal-links/) will allow linking to content within your app securely in iOS.
+When the operating system has two or more applications to choose from when opening a link, Android will show the user a modal and ask them to choose which application to use to open the link. On iOS however, the operating system will make the choice for you, so the user will be blissfully unaware. Apple has made steps to address this issue in later iOS versions (iOS 11) where they instituted a first-come-first-served principle, although this vulnerability could still be exploited in different ways which you can read more about [here](https://thehackernews.com/2019/07/ios-custom-url-scheme.html). Using [universal links](https://developer.apple.com/ios/universal-links/) will allow linking to content within your app securely in iOS.
 
 ### OAuth2 and Redirects