If your system is infected with App4Search Search extension and you want to remove this then you are highly suggested to read this post carefully and follow the instruction.
App4Search Search extension is an Unwanted Browser Extension that has been categorized as Potentially Unwanted Program (PUP). It has been developed by the cyber criminals with the evil motive to earn huge online money by cheating innocent users illegally. It is capable of infecting all the versions of the Windows-based operating system such as Windows 7, Windows 8, Windows 8.1, Vista and the most recent version Windows 10. it pretends like genuine and useful program that claims to provide you best and relevant search results but in reality, it is a fake and dubious program that only crafted to cheat users.
App4Search Search extension is a highly infectious threat that penetrates the system with the bundles of a free program such as Adobe Reader, Video downloader, PDF maker, and flash players are downloading from infected sites. So the users must pay attention while installing the freeware program and must read their installation guide carefully as well as select custom and advanced option. It can also spread through the attachments of the junk email, visiting infected sites, using pirate software or torrent files, playing online games and others without permission.
The worst thing about App4Search Search extension is that it monitors your online session such as which page you visit, which link you open, which search query use and others. It can also gather your personal and financial information such as bank details, credit card details, email contacts, IP address, and other sensitive details for their evil use. It can also eat huge system resources and downgrades the performance of the system. So it is better to remove App4Search Search extension as soon as possible to keep your system safe and clean against future infection.