Zdravím mám ten samý problém.
Avast ticho po pěšině.
Po práci budu odstraňovat podle tohoto návodu :
https://malwaretips.com/blogs/remove-piesearch-com/Snad si tam nenatahám další bordel.
Zkrácený popis z jiného zdroje :
https://productforums.google.com/forum/#!topic/chrome/BZshTFI8oEQ(A vzhledem k tomu že to jednou beztak budu potřebovat, tak je tu zjednodušeny přepis)
Download the Chrome policy remover.
Right click it and select Run as administrator.
Click Yes at the confirmation prompt and allow the process to complete.
I would also recommend that you carry out the following steps:
-Install and run the Chrome Cleanup Tool (Windows only).
-Scan your computer for malware/adware using Malwarebytes, AdwCleaner and HitmanPro.
-Uninstall unfamiliar or suspicious extensions.
-Uninstall suspicious programs from your computer that you don't remember installing (Start > Control Panel > Add or Remove Programs/Programs and Features).
-Reset your browser settings.