On March 20, 2017, A new summary shared by Google on increase in the number of hacked sites by approximately 32% as comparison to 2015 data.
Google stated that to verify their sites in Search Console as it is the main problem of infected the sites. Google said if someone thinks their site was incorrect flagged, they can post in the Google’s Webmaster Help forums.
Google declared three clean up guides for effected Sites, which is listed below:-
Gibberish Hack: The gibberish hack automatically creates many pages with nonsensical sentences filled with keywords on the target site. Hackers do this so the hacked pages show up in Google Search. Then, when people try to visit these pages, they’ll be redirected to an unrelated page, like a porn site. Learn more on how to fix this type of hack.
Japanese Keywords Hack: The Japanese keywords hack typically creates new pages with Japanese text on the target site in randomly generated directory names. These pages are monetized using affiliate links to stores selling fake brand merchandise and then shown in Google search. Sometimes the accounts of the hackers get added in Search Console as site owners. Learn more on how to fix this type of hack.
Cloaked Keywords Hack: The cloaked keywords and link hack automatically creates many pages with non-sensical sentence, links, and images. These pages sometimes contain basic template elements from the original site, so at first glance, the pages might look like normal parts of the target site until you read the content. In this type of attack, hackers usually use cloaking techniques to hide the malicious content and make the injected page appear as part of the original site or a 404 error page. Learn more on how to fix this type of hack.