A dusting attack in the context of cryptocurrency refers to a tactic used by cybercriminals to deanonymize the users of a particular cryptocurrency by sending tiny amounts of the said cryptocurrency to multiple wallets. By tracking the movement of these small "dust" amounts, hackers can potentially uncover the identity of the wallet holders and gain insights into their transaction activities. It is important for cryptocurrency users to be aware of such attacks and be cautious of any small and unexpected deposits in their wallets.