User-Agent in request for IOS and Android : <p>Hi i'm developing a android and IOS app . I never set a user-agent header for my API call. (simply use some library to make request and get response) Now my server guys told me that </p>

<p>" We are facing an issue as currently  mobile does not do any authentication when calling esb</p>

<p>Simply states  SytemId=’ABC’</p>

<p>Now we are getting malicious hits from intruders  disguised as mobile and is cauing lot of traffic"</p>

<p>Is this related to user-agent? What should I do now? Any help is much appreciated. I'm not good at security thing</p>
