Unsecured does not necessarily mean that they cause malware attacks, they are just unencrypted data. These kinds of links are easy to hack, so that is why Google’s Android WebView does not allow them to be accessed inside the app. However, you can open the links outside the app on any browser, but we cannot guarantee safety. You should know whether these links are trustable or not. Make sure you trust the website before opening them on the web, if they are not safe you will be warned on chrome also, that you will have to use the advanced settings to use such links. If you want to get into the details of these, please ask the website provider for the SSL certificate.