> Like for example: how do I even know if my version is modified or not? And > how it is modified?
I was referring to freedom 1. Wire is free software, so you are free to modify it. Depending on the nature of your modifications you may not be able to use your version with their servers. If you are using Wire as distributed by the devlopers, as opposed to using a fork or modifying it yourself, it's not something you need to worry about.
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