LuDaShi is Chinese Windows and Android optimization software. It installs without user permission, in a bundle with free software. LuDaShi displays annoying ads, pop-ups and banners in browsers and alerts and widgets on the Windows desktop. Due to some reason LuDaShi was distributed among non-Chinese auditory.
Zepto Ransomware is new file-encrypting ransomware from Locky family. It uses RSA-2048 encryption algorithm and appends .zepto extensions to encrypted files and modifies file names with set of numbers and letters. First part of this set is your actually personal ID that is needed to pay the ransom and get decryptor. Ransom amount is 0.6 BitCoins (~$365). Zepto creates _HELP_instructions.html file with instructions to make the payment.
Searchglobo.com is fraudulent search engine, that tries to look like famous search engine. Main page contains multi-color "Search" logo, Google Custom Search search line and advertising banner from Google AdSense. It cannot harm your computer, unless you click on ads on it or download something it offers. Main issue with it is, that it installs without user permission and may be used by unscrupulous developers for tracking search queries, browser history, bookmarked pages.
Navsmart.info is bogus search engine, that tries to replicate popular search engines visually. This web page sets as default homepage and search engine in Google Chrome, Mozilla Firefox and Internet Explorer. Search requests are redirected to Google Custom Search, that provides results similar to Google.
Yeabests.cc is nasty browser hijacker, that modifies homepage and search engine in Google Chrome, Mozilla Firefox and Internet Explorer. Along with that, it modifies browser shortcut settings on the desktop. As a result, Yeabests.cc opens in a new tab every time you start your browser and your queries get redirected to cse.google.com. Main page of Yeabests.cc has icons and links to social network sites, shopping sites and gaming sites.
Dozensearch.com is another typical browser hijacker, that modifies settings in Google Chrome, Mozilla Firefox and Internet Explorer. This search engine redirects users queries to Google. Homepage of this unwanted website looks similar to popular search engines, but contains quick links to gaming and shopping sites. Dozensearch.com also hijacks browser shortcuts on the desktop, so if user clicks on them they open dozensearch.com in new tab.