Cryptogenic, there is a hidden mining cryptocurrency, recently there are many extensions for Google Chrome: according to statistics, the company of all Minami extensions 90 percent did not tell the users. Therefore, on April 2, Google does not allow extensions whose functionality is tied to mining, and already in the store would be removed in June 2018.
Extensions that are associated with cryptocurrencies, but not engaged in mining directly, changing the rules is not affected.
However, there is a likelihood of cryptogamia and on the usual sites: Opera even implemented in their browsers lock of such modules.
The Next Web