The pattern is old and durable: unsolicited contact, a hard sell on a thinly traded stock or an unregistered offering, scripted objection handling, and refusal to let the customer think. Modern versions run through messaging groups, signal channels and social media rather than phone banks.
The securities are usually genuine but the price is manufactured, with promoters holding cheap stock they distribute into the demand they create. That is the sell side of a pump-and-dump.
State regulators under blue-sky-laws are often first to act. The cheapest defence available to anyone is checking registration on finra-brokercheck before the second conversation, because these operations are almost never properly registered.
Related: pump-and-dump, blue-sky-laws, finra-brokercheck, market-manipulation, fud