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From Amazon SNS, I can send SMS messages to any mobile phone.

To recipient phones, the SenderId is just a string of my choosing. The messages cannot be replied to.

I receive quite a few phishing messages that appear to be sent via a similar mechanism. I can't reply 'stop' and the sender ID is just a name.

Is it possible for network operators to trace these types of SMS messages back to their sender? Or is the inter-network protocol completely anonymous?

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  • Wireshark can trace pretty much anything that can be traced !
    – C0deDaedalus
    Commented Apr 4, 2018 at 17:55
  • It can inspect anything going through my computer, but I am concerned with what goes through the telecoms' infrastructure.
    – Robin
    Commented Apr 5, 2018 at 15:16
  • Anything can be traced within your reach of time and money you can put into it.
    – C0deDaedalus
    Commented Apr 5, 2018 at 17:41

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There is Data retention requirement for various country telco. AWS SNS is simply a services proxy to SMS telco, so, no exception.

However, since it is a lucrative business for both telco and Phish spammer as point out here, and it take expensive resources to track down and shutdown the operation, so you will not see the end of it.

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