In its recent “Are Blockchains Decentralized” report, the Pentagon sheds light on possible critical vulnerabilities in blockchain systems. Security company Trail of Bits reveals, in particular, security flaws that could affect the Bitcoin and Ethereum blockchain. Note that this study was funded by the Defense Advanced Research Projects Agency (DARPA) of the US Department of Defense.
While the crisis Terra Luna deeply upset the cryptosphere, cryptocurrency prices continues to crumble. Losing hundreds of millions of dollars to your followers. Today, the increase in the number of exits and liquidations indicates a growing distrust in the securities market. virtual currencies.
And to make matters worse, a new Pentagon report has just cast another shadow over the board. Claiming that blockchain systems are not as decentralized as we think. Moreover, this technology is especially vulnerable to attacks. Especially it concerns bitcoin blockchain as well as Ethereum
Major Security Disadvantages in the Implementation of Blockchain Systems
According to a report by security firm Trail of Bits, there are critical vulnerabilities in the implementation of blockchain networks. But also Proof-of-Work (PoW) and Proof-of-Stake consensus protocols. According to experts, Bitcoin and Ethereum will be especially vulnerable to set of potential attack vectors.
Not to mention the perturbations emanating from external actors. Moreover, these two networks have privileged member recruitment who have the ability to modify their transactions.
The report adds that for a blockchain to be truly optimally distributed, it must have a Sibyl cost. However, without a centralized TTP, it is simply impossible to implement it. Especially for open source blockchains like bitcoin or Ethereum. Until we discover a mechanism that allows us to apply Sybil stands without TTPblockchains without access restrictions will not be able to achieve satisfactory decentralization.
Mining in doubt
The performance of the extraction method was criticized in the report. According to the security company, there is currently no standard that allows sanction the dishonesty of minors. Also, when it comes to bitcoins, miners are not involved in the mining process. Add to it non-encryption and authentication the Stratum protocol, which is used to coordinate between mining pools.
Moreover, according to the report, almost 51% Sybil attacks over the past few years, everything can be used against bitcoin. Also note that as of 2021, 21% of Bitcoin nodes are running a vulnerable version. Not to mention the three ISPs that account for almost 60% of the traffic.
In addition, according to the Pentagon, vulnerabilities not related to the blockchain are often used to attack its services due to server vulnerability.
Finally, the validity of such blockchains as Ethereum was also interrogated. The report highlightscomplete Turing implementation on-chain, which does not interfere with the updating of smart contracts. This causes blockchains to face the same trust issues as a centralized financial system.