Handy Tab is a browser extension that comes to your computer without the user consent. Usually, it comes bundled with other free programs, and it starts to degrade the performance of your computer. After penetration Handy Tab displays advertising content of different content.
B-ok.org is browser hijacker that comes in the form of search engine, which looks like familiar Google, Bing, and Yahoo. B-ok.org comes to PC bundled with other software without user consent. As developers say, it improves browsing experience and filters-out irrelevant search results.
Search.rspark.com is fake search engine that looks like ordinary search pages, such as Yahoo, Bing, Google, which gets into your computer in the form of an extension to the browser Google Chrome, Mozilla Firefox or Internet Explorer. It penetrates to the PC without user consent.
Bad Rabbit is new wide-spread ransomware, that uses RSA-2048 and AES cryptography. It mostly targets enterprises in Eastern Europe. Security experts claim, that Bad Rabbit is related to previously distributed Petya и NotPetya viruses. Currently, several governmental institutions and banks were attacked by this virus in Russia, Ukraine, Turkey, Germany. Hackers demand ransom of 0.05 BTC (BitCoins), which is ~280$ and threaten to increase this amount if not paid within certain time gap. We strongly recommend not to send money, as in most cases malefactors do not send keys.
Botcrawls.com is a fake search page that is similar to the popular search engines such as Google, Bing, and Yahoo. It comes on a PC bundled with free software without user consent. According to the developers, Botcrawls.com increases the safety and efficiency of search, increases browsing experience and provides access to popular sites and social pages.