Blockchains: ENISA Issues Security Guidance to Financial Sector Companies Looking to Implement Distributed Ledger Technology

Organisations should encrypt transactions using a permission-less ledger with more than one key to restrict access to only involved counter-parties, establish rules requiring multiple signatures to authorise or create transactions, and implement smart contracts to determine which entities can engage in certain activities; fees can be assigned to new transactions to make it difficult for an attacked node to issue large numbers of transactions, and internal governance procedures must enable internal identification of an individual signing off a transaction request.

 

Source: https://www.enisa.europa.eu/publications/blockchain-security

 

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