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> Any app can trivially extract your signal conversations

There is a security model baked in to the mobile OS that usually does not allow that.

Yes, and it can be subverted when the mobile OS is compromised.

That doesn't lead to

> Any app can trivially extract your signal conversations

In that case, can Signal users take advantage of this to export their own messages?

Yes but one would have to exploit a similar vulnerability as was exploited in this story. Apple would patch it as soon as it became popular because it could be used for an attack like this one.

I don't think that's obvious for non-techies