A black market is a transaction platform, whether real or tangible, in which goods or services are exchanged illegally.
Four ways organizations can prevent PII from becoming a public record for the black market:
The black market is unregulatable to a large extent because it exists without government regulations. Usually due to price control or restriction of goods and services.
The only way to control the black market is to legalize it and control the trade from there.
Hence, these are the ways to control or regulate the black market.
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