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Facebook crawls links in PDFs you send in Messenger

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Re: Facebook crawls links in PDFs you send in Messenger

#151
There is a way to send any type of file through messenger without facebook snooping into your private life.

1. Compress the file you want to send in an password protected zip. 2. change the extension of the Zip file (.zip) to text file (.txt). 3. Send the file trough Messenger.

I already did it to send MacOS application to a friend. To avoid size restriction, compress in several zip parts, rename the extentions to .txt and send.

File size can be as high as 50mb+.

Re: Facebook crawls links in PDFs you send in Messenger

#152

And if they didn't the headline would read: "Facebook fails to stop malicious and illegal content from being shared on their Network! Should they be shut down?!"

So we want Facebook to stop propagating fake news and hate speech and we want them to do so without crawling URLs?

Yes. Those are mutually exclusive.

Re: Facebook crawls links in PDFs you send in Messenger

#153
post #139
post #128

Earlier quoted context omitted.

Telegram is barely e2e.

Messages in plain text on the server? That's /not/ e2e at all! That's just a con. Advice: avoid telegram completely, always. Or is my news old and that's no longer the case?

Telegram supports "secret chats", which only work on a single device and for private conversations.

Every other telegram feature has no security.

Re: Facebook crawls links in PDFs you send in Messenger

#154
post #143

Earlier quoted context omitted.

> This solution is not a solution. No, not a complete solution, but it's a step in the right direction. One of the reasons advertisers as well as ordinary users come to FB is to be in contact with you -- to have your attention. Stop using FB and you take that away. FB ends up with less of an audience with which to entice others.

There's enough users remaining that your shadow profile still has value and facebook march on. This solution is not a solution. Definitely do it, and you'll really enjoy doing it too - life improves! Just don't think it's any kind of solution to any of the systemic problems that are being discussed because it isn't. Not even a partial solution. Not even a meaningful start of one.

But if my Facebook profile is deactivated or deleted or whatever, and I’m no longer active, how can they still have information about me? I had about 300 “friends” on there but no one really tagged or mentioned me or anything.

Re: Facebook crawls links in PDFs you send in Messenger

#155
post #149

Earlier quoted context omitted.

What are you claiming is the market failure here?

Market Failure [1] is the definition in economics for this situation. There is a non-price, non-market mechanism imposing a cost upon us. Just like if your neighbour at the restaurant lights up a cigarette and you hate that and it spoils your meal. You can't very well "give up smoking" to fix that. Just like any public good - eg national defence, it can't be done by a free market alone and so never is. Just like if a…

> Just like if your neighbour at the restaurant lights up a cigarette and you hate that and it spoils your meal. You can't very well "give up smoking" to fix that.

But you can go to another restaurant that doesn't allow smoking. If enough people don't like having smokers around that those restaurants goes out of business, then eventually you will see a shift in the market of available restaurants with non-smoking sections.

Re: Facebook crawls links in PDFs you send in Messenger

#156
post #89

Earlier quoted context omitted.

There's no surprise. Gmail does. If you search for a text string in Gmail, it will return emails that contain that text only in scanned images or PDFs that are in your mailbox.

That doesn't mean they're crawling the URLs, just that they're indexing the content of PDFs/images for your search. Which is, honestly, a pretty useful feature. Whereas Facebook is doing this without providing any value to the user.

I've worked with email security appliances that will visit the pdf url when detonating the attachment in a Sandbox. Dynamic analysis helps find 0day's ,sometimes the link leads to something worse,the link many times is a url shortner too

Re: Facebook crawls links in PDFs you send in Messenger

#157

Facebook spies on everything you do. Stop using it. This is the only way this will end. It's not even a useful product. Stop being sheep.

This.

I quit several years after being on the platform for nearly a decade, which I mainly used to communicate with classmates.

Over time, I realized the platform was only good for pushing false information and giving a platform to people who shouldn't be sharing their thoughts. I also became more aware that I was a product, and it infuriated me to no end.

I'm glad to not be on it anymore. What a waste of time.

Re: Facebook crawls links in PDFs you send in Messenger

#159
post #149

Earlier quoted context omitted.

Market Failure [1] is the definition in economics for this situation. There is a non-price, non-market mechanism imposing a cost upon us. Just like if your neighbour at the restaurant lights up a cigarette and you hate that and it spoils your meal. You can't very well "give up smoking" to fix that. Just like any public good - eg national defence, it can't be done by a free market alone and so never is. Just like if a…

> Just like if your neighbour at the restaurant lights up a cigarette and you hate that and it spoils your meal. You can't very well "give up smoking" to fix that. But you can go to another restaurant that doesn't allow smoking. If enough people don't like having smokers around that those restaurants goes out of business, then eventually you will see a shift in the market of available restaurants with non-smoking sec…

Mastodon is a few years old now and in the marathon of social market share has what it takes to satisfy the users feature requirements and privacy concerns in a way that facebook never will. Join Mastodon https://joinmastodon.org/

Re: Facebook crawls links in PDFs you send in Messenger

#160

Earlier quoted context omitted.

Because the key, nonce, result, and keyshare or Diffie-Hellman exchange are all done inside of messenger... why would anyone believe this is legit? It might be, IDK, but if it’s all inside their system, how could you audit that?

This argument applies to any messenger app that claims e2e encryption. You could build signal from source. But how much do you trust your compiler?

Can you actually use Signal built from source with official servers? Anyways, we have open-source chat platforms that have been audited by independent third parties, on one side, and closed-source mergacorporations' unaudited chat software on the other. Point being, why would you argue for using the bigger "evil"?
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