High Stairs by Yontoo Technology Inc is unwanted program that creates ads in Google Chrome, Mozilla Firefox and Internet Explorer. It is classified as browser adware. It generates ads of different types: pop-ups, contextual. Those advertising units are usually useless and disturb users from browsing as they overlay websites content.
Palikan.com is nasty browser search hijacker that infects Google Chrome, Mozilla Firefox and Internet Explorer. Palikan.com hijacks search, newtab and homepage of all major browsers to http://www.palikan.com. Although, its searches are redirected to Yahoo, Palikan is considered to be PUP (Potentially Unwanted Program).
Search.sidecubes.com by Veristaff.com Ltd is browser hijacker that affects Google Chrome, Mozilla Firefox and Internet Explorer. It comes along with SideCubes adware. SideCubes is doubtful social sharing add-on or toolbar for browsers. It creates panel on the left side of the windows, so you can share content you read. Along with this it replaces homepage and default search engine of your browsers to search.sidecubes.com.
Search.eshield.com (eShield Safe Search) by Search.us.com is search hijacker and redirect for Google Chrome, Mozilla Firefox and Internet Explorer. It hijacks browsers homepage, modifies your default search engine. It installs extension called eShield Browser Security. This add-on is promoted as app to enhance browser security. Your searches are redirected to search.eshield.com, where results are marked as safe, suspicious or dangerous.