@sgunhouse Thank you for the prompt responses indeed. At the same time, I don't think going back and forth with details is a constructive approach here. I think I have described the issue in full. Anyone with Facebook and Opera is free to check that with a couple of clicks.

@blackbird71 Understood, but let's not mess voluntary publishing to Internet with chatting in Messenger. When, e.g. in Google Drive, one chooses to share an image, there is an option to create a shareable link, and there is an alert saying the image will be accessible to everyone with the link. Here, with Facebook sidebar, one does not publish anything, the unsuspecting users just operate on their local PCs, and that creates public links to the file. I think chats are supposed to be fully private, and FB might share some metadata/maybe even data samples in anonymized form to sell you ads, but 100% not make raw images visible to everybody, w/o notifying you.

It works either. So, it makes your chat images accessible to everyone with Internet access.

Anyway the images get public.

Hello, Opera users and developers!

Please explain me where I am wrong: start with Facebook Messenger in Opera sidebar and try this: pick any picture from any chat and choose "open picture in a new tab" via right mouse click. The picture will open in a new tab with a long address of the form https://scontent-arn2-1.xx.fbcdn.net/v/t1.15752-0/p480x480/86935027_ ... 657347d84&oe=5EB56DEF .

This address is public one (accessible by anyone with Internet access)! I've checked it by various means, e.g. by sending the link to my other PC, where I was not logged on to Facebook, it successfully opened that very picture. So the picture did not come from any local cash on that other PC, Also it worked with other browsers, where I was not logged on to Facebook.

1. Does it mean anytime I choose "open image in new tab" Opera sends a the raw unprotected image from the chat to a public host?

2. Does it mean the chat data in the messenger sidebar are unprotected even before "open image in new tab" is implemented?

I hope I am wrong, but at the moment it looks like chilling.

Best regards,
ouser91.

Win 7, Dell, 8GB RAM