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With a pump and dump process carried out in the crypto currency market, a predetermined crypto currency is bought by a large number of users and the price is raised, then profit is generated by selling the new value.
In various communication applications, "pump and dump groups" consisting of thousands of users are established for "collective gain".
These "top-level members" are already investing in selected cryptographic currencies for days. Later, the group is given a certain time to "pump together" and the countdown starts.