How could images from googleusercontent.com and alt containing "Description automatically generated" appear on the site?

Question

Web development

Dear colleagues, tell me please, maybe someone came across.
One project I'm working on has a blog. On the Angular frontend, admin panel and API on Symfony. In the CKEditor admin panel to work on content.
Recently, a strange problem was discovered on the site. Images are missing from some posts. It turned out that the missing images have a src like:

https://lh4.googleusercontent.com/vI925l7NYhApO6151YfQvEy3TC2bcL66nsT0cDbfm4rU6V9jvrXRpXGnU1bbTvmp00aLlha80eojOWZ6zVKHtXitNXMDXCqGWhgdhwAKalE7GN3bpBY7MiI__Q1bS4vHUlGaMlz_

Those. very similar to what Google gives in the search for images. Such a scenario could be if the picture was copied from the image search and pasted directly into the editor. But the person working on editing the blog is absolutely sure that this did not happen, and his words are confirmed by the fact that some of the pictures were created on a computer (they could not, in principle, be in Google).
Also, a couple of pictures showed a strange alt:
"A screenshot of a social media postDescription automatically generated"
"A screenshot of a personDescription automatically generated"
There are suspicions of some plugins or browser extensions, we also check this version.
Apparently, the pictures worked for a while, and then were invalidated by Google, and now they do not work. I can't find pictures in downloads (i.e. apparently they were never uploaded).
Has anyone experienced something similar?
Thank you very much in advance.

Answer 1

Such a scenario could be if the picture was copied from the image search and pasted directly into the editor. But the person working on editing the blog is absolutely sure that this did not happen, and his words are confirmed by the fact that some of the pictures were created on a computer (they could not, in principle, be in Google).

That is, you deliberately deny the explanation and try to come up with something from the lack of information?
Just insert logging into your system at the time of loading pictures - and you can reliably find out.
PS:
Somewhere in 70% these are users' jambs, it doesn't matter what they say they didn't mess up.
Somewhere in 29% these are jambs of your software, it does not matter that you are sure that there are no errors in the software.
And only 1% are shoals of the kind that you are now trying to discover, on which you are now spending a lot of effort - and this is not advisable.
Just insert logging and watch.

Answer 2

for respected boys, you need to immediately write what
this is a
, then everything is simple: copy-paste of office chickens and big
bosses

Description automatically generated

this is either from the same place, or the addon
is good at interrogating the admin with an addiction for backups, or, at least, server logs
(this, of course, if you need it for business, etc., while it seems that you don’t need it)