Is Someone Hijacking Google Images?

I was looking for ideas on how to build a simple network analyzer to test antennas, filters etc. so I typed “network analyzer schematic” (without quotes) on Google Images and it apparently returned some results I was expecting, but clicking on a lot of results from the first page opened some subscription only websites with suspicious names nagging me to create an account to see the actual images, some of which I’m 100% sure I already have seen on their original authors websites. Here are some of those results; many more on the 1st page. Edit: it appears those pages are being slowly buried by legit results, but some of them still surface although much deeper.

Source: news.ycombinator.com