What is JS hijacking? Prevention of how to solve?

　　JS hijacking is in the search engine keyword search of your site, you enter the site as it will jump to another site, or sometimes you see the site's domain name is your title but only to find that you open a snapshot is not your website.
　　iis7 website monitoring
　　sites open faster queries, DNS pollution, regional telecommunications hijacking problem detection.
　　For example, we search for an item, we see the search results behind the word risk, which shows your website hacked by others.
　　When you click into it, you will find that he does not enter directly but rather the emergence of a risk warning, if you click Continue visit you will find that he will jump to another URL.
　　If this happens, do not worry, we first enter into the site, if not get back on to the website source files, view their code and find the corresponding delete it, below is what I found in the source file JS Duress Code .
　　Of course, in addition to JS hijack code and other codes should be deleted, the snapshot remember to post feedback if you are a snapshot of hijacking.
　　We want to prevent JS hijacking, we must first do a good job security of our website, it is best to buy server space is a large choice of platforms such as Ali cloud, cloud, etc. Tencent, finished modifying the site remember to replace all of the account password, the site should always remember to back up so that your website can be a problem in time to restore coverage.