As long as your program can be reverse-engineered, security is a common worry while creating hybrid apps.
* Since version 4, Ionic CLI has had built-in code uglification, which is a common strategy for making code harder to read by hackers. When using Angular CLI or prior versions of Ionic, however, there is no code uglification. Your coders will be forced to uglify the code on their own.
* A man-in-the-middle attack is one of several ways to undermine your mobile app or PWA. Is it really that significant? Because your Ionic app is really a device-based web page. It's important to keep in mind that Ionic communicates with the backend using regular HTTP requests. As a result, you'll want to apply the same security safeguards to your Ionic app as you do to your website, such as using HTTPS rather than HTTP.
* In components like ion-alert, developers can use custom or user-supplied content. This content, which could be plain text or HTML, should be treated with caution. It's vital to sanitize any untrustworthy data before proceeding with anything else. For example, using innerHTML without sanitization creates an attack vector for bad actors to enter malicious content and perhaps launch a Cross-Site Scripting attack (XSS). For user-created components, Ionic includes basic sanitization methods, but it is up to the developer to guarantee that all data is sanitized.
* An attacker may find a way to exploit a weakness in an application's code (for example, a third-party API call or a JavaScript package) such that malicious code gets executed instead. The Content Security Policy (CSP) meta tag was established to help avoid such attacks by indicating which network requests are allowed and where assets are loaded from. You'll notice that Ionic apps for iOS and Android frequently use Cordova's Network Whitelist Plugin to prevent cross-site scripting attacks on web views that don't support CSP.
