A 51% attack refers to a situation where a single miner or group controls more than 50% of the blockchain network’s computational (hashing) power. This majority control allows them to manipulate the blockchain ledger by double-spending or blocking transactions.
This term is widely recognized in blockchain security contexts and is referenced in typology papers on crypto financial crime risks, including those issued by UAE authorities and FATF.
Supporting extracts:
DFSA AML thematic reviews mention the risk of manipulation and double spending in blockchains susceptible to 51% attacks.
Typology reports on cryptoasset risks highlight computational power concentration as a core vulnerability.
“51% refers to the percentage of total mining power or computational power in the network” is the standard definition across crypto AML/CFT frameworks【31.92._TFS_Typology_Paper_Eng__4.pdf; AMLCFT_Guidance_for_FIs.pdf】.
Thus,Cis correct.
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