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I met a business partner who is doing some work for SME retail investors last week for lunch:

He showed me his WhatsApp: People are sending _ALL_ type of critical documents by WhatsApp to him. Everything. (and bank statements are among the class of "less critical" documents in his case)

My theory here is: "If you have any function in your product, people will use it for anything appropriate to them in a given minute"

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To be fair, what other simple way is there to send a document to a contact through an e2ee channel? Mail + PGP/GPG? Wormhole?? openssl???

Sending it via WhatsApp (which also has desktop clients, btw) strikes me as a perfectly reasonable solution. (Which is somewhat of an indictment of the current state of cryptographic software, but that's a different topic.)

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Whatsapp "claims" to be e2e, but nobody knows for sure since its sources are closed.
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Still more secure than non encrypted email yet a lot of people still use email to send fairly sensitive data.
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This exact scenario happened with me in a prior job. Invoices, payments, everything could (and sometimes was) sent through WhatsApp. It was absolutely shocking to see people do this.
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Some European governments are effectively run via WhatsApp.
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maybe China is right: one app to rule them all
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I witnessed a cop attempting to manipulate some files I provided to him on a thumb drive. It was a slow laborious process of dragging files one at a time from the Windows image viewer to shared folder. I would have liked to just do a Ctrl-A, Ctrl-C, Ctrl-V, but that was way above his level of thinking and he didn't seem like the type who wanted an education. So I just sat there through the long, painful process--and then at the end he completely screwed up the report. Idiot.
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