this post was submitted on 16 Nov 2023
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They make Google Messages, which does RCS. Google Messages has full access to the unencrypted message content. (No evidence they are exploiting this access, but its a possibility).
Even just knowing that someone is sending messages means they are active on their phone, so probably an opportunity to more aggressively send ads?
And they can build a network graph for all the people you communicate with, and use their purchasing habits to target you.
Lots of opportunities for ad targetting fuckery. (And more malicious fuckery if they felt they could make money doing it)
If it can be scanned for keywords, it will be. Google scans everything.
If its properly E2E encrypted, as they claim their RCS implementation is, then hopefully no opportunity for keyword scanning. But my point was that even without direct keyword scanning, there is a lot of information that could be exploited.