Google search result of my wordpress site is different than original content. We have taken services of security expert and they have scanned the site and database but there is no modification in code and database. Neither they found any plugin vulnerability or similar type of attack. The code and and database was clean.
Only thing we found in access log that 10-20 requests are being sent daily on my server but the referer is either vulgar sites or pharma sites. We couldn't find it immediately because there are thousands of requests we get daily and these are only 10-20 but they hit regularly. Can this be a reason, my sites content is different in google search results.
We have cleaned every url using removal method of google but now we searched after a month, fake results start appearing again. If code and database is clean, fake referer attack can be a possibility for modified search results.
Please share some information on this front.
Edit -- My concern to know how badly fake refers can damage search results of google. Are they slow poison? If yes so can anyone do this damage to any site because creating faking referer is very easy for anyone using curl.