I was browsing LinkedIn on my Chrome browser yesterday, and sent a connection invite to someone on LinkedIn. Shortly after (~30 minutes), I fired up my Nord VPN, opened up an incognito browser window, and started browsing an XXX site (a well-known / top 5 XXX site).
I watch a video and once it ends, the 'Related Videos' pop-up on the video player. Behind the gridded layout of related videos thumbnails, a screenshot (that I did not take) of that person's LinkedIn profile page (with my own personal information in the right hand corner) showed up as the background image behind the related videos thumbnails! I visited 3-4 different videos on that site, and this same screenshot showed up at the end of each video behind the related videos thumbnails. I closed that XXX tab, opened up a new tab and went to the same XXX site, and when I tried the same thing with the same videos, the background behind the related videos thumbnails remained black -- no screenshot.
I ran a malware/spyware test using McAfee and Avast Security, and no infections were found. Any thoughts on what's happening here? This issue can be broken down into two questions: (1) why was a screenshot of my Chrome browser taken when I was on this person's LinkedIn page (the screenshot was contained to the LinkedIn page, did not show any of the Chrome browser or any of my Mac interface)? (2) why/how did this screenshot appear as a background behind the related videos thumbnails at the end of some video on a well-known XXX site?