R.srvtrck.com may start to appear in your browser by itself from time to time. This unexpected behavior is the result of user installed software that has embedded adware in it. Beyond this, it may spam your browsing experience with various advertisements causing the browser to consume more resources.
Amazon Shopping Assistant is an adware which responsible for the appearance of small boxes containing best deals, discounts, coupons for Amazon. The advertising is served intrusively and most ofter overlays website’s content thus reducing browsing experience. The main purpose of Amazon Shopping Assistant is to generate advertising revenue by redirecting to affiliate sites as well as promoting installation of other dubious programs.
Pubads.g.doubleclick.net page may start appearing in a browser and then redirect a user to some ad site. The user also may notice an increased amount of various advertisements that will pop up on every page he visits. Malware like this using bundling method for distribution: adware comes along with the free program or fake Adobe updater and is installed automatically as an optional component.
If you are continuously seeing a pop-up message on the top of your browser stating: “This version of Chrome is no longer supoorted. Please upgrade to a supported browser“, then your system is attacked by malware. Do not trust these messages and click on “Download Chrome”, this kind of malware is created to get into a user computer and infect it with more malware. Also, it causes browser to open “http://go.oclasrv.com/***” page which in turn redirects a user to some advertising site.
Verifyisreal.com is an advertising domain which is responsible for numerous ads and redirects in your browser. Many shady developers create such programs to generate profit by injecting sponsored advertising. This way, developers get money for each click on an affiliate link.