Listchack - a browser hijacker that comes as a browser extension without your consent. Listchack hijacks Safari and other your browsers, e.g. Mozilla Firefox or Google Chrome. After penetrating the Mac, Listchack starts to display banners, coupons, and pop-ups, which may relate to a popular partner site (eBay, AliExpress, and so on).
Rack-search.com is the fake search engine that hijacks Safari and worsens your Mac. Most often, it comes bundled with freeware without user consent. Rack-search.com may seem like common search pages such as Google, Yahoo or Bing. Plus, and according to the developers' words, it improves the browsing experience and excludes irrelevant search results.
Safe-redirections.com is an annoying browser extension that comes without the user consent. This adware is not a virus, but it creates many problems. Per developers, Safe-redirections.com designed to help the user to make purchases and save money. Instead, Safe-redirections.com displays tons of annoying banner ads, coupons, and more.
Gen.mactechright.com is sub-domain, that is used by browser adware to display ads and pop-ups. It was reported on Apple forums, that Gen.mactechright.com and several other pop-ups appear in Safari browsers on Mac systems, when users open various websites. Usually, this advertisements promote questionable Mac optimization programs, for example MacKeeper. Gen.mactechright.com can be caused by advertising extension installed in Safari or malicious application installed in your Mac OS.
Insane Chrome Extension - a browser extension that comes bundled with free downloads without user consent. Insane Chrome Extension is not a virus, but it carries a greater potential threat to the PC safety. After penetration, Insane Chrome Extension displays advertisements, banners, and coupons, which may contain information of popular online stores.