A lot of URLs are suddenly giving us 404s and 500s.
On closer inspection, these URLs do not exist on our website and are being linked from random sources.
As more URLs were inspected on GWT, a lot of the URLs don't have a source, so we have no idea what their origin is.
My questions are :
Are we under some kind of SEO (bad-link) attack?
If yes, what can we do?
If not, what can we do?
The two dips, one at the beginning of the chart, and one in the middle, both occurred because we told GWT that the issues were resolved, to see what would happen.
We noticed a sharp rise in errors again, and I have a hunch that the errors were new URLs not the same ones.