Monero 51% Attack: Why AI Protocol Qubic Says It’ll ‘Help’ the Privacy Chain

AI protocol Qubic stated it had taken management of Monero after a 51% assault on the privateness blockchain, probably permitting the protocol’s mining pool to govern transactions knowledge and different data—though safety consultants solid doubt on the occasion’s success.

The group stated its “experiment” was profitable and achieved to “assist” the community shield itself towards future assaults.

“Qubic has reached over 51% of Monero’s hashrate, successfully giving it management of the community,” the corporate stated in an X put up that referenced an organization weblog entry. “Qubic selected to not launch the takeover but, proving a robust principle by motion. However this story isn’t over but. What’s subsequent for Qubic and the way forward for [proof-of-work] chains?”

A 51% assault happens when a single entity or group of miners controls a majority of a proof-of-work blockchain community’s hash fee or computational energy, probably giving it the flexibility to govern transactions and double-spend cash. Outstanding proof-of-work chains embody Bitcoin and Dogecoin, in addition to Monero.

The assault reintroduces longstanding fears a couple of blockchain vulnerability that enables attackers to take management of a community and manipulate it to their profit, the detriment of customers, or each. In a two-year interval beginning in 2018, Ethereum Basic, Verge, and Bitcoin Gold all suffered assaults.

Qubic is a proof-of-work blockchain that makes use of the consensus mechanism’s computational energy to assist propel its AI mannequin. The QUBIC token was up 25% over the previous 24 hours to succeed in a market cap of $342 million, based on crypto knowledge supplier CoinGecko. Monero’s XMR was down 6% from Monday, similar time, and has a $4.75 billion market cap.

Nevertheless, some consultants, comparable to AMLBot and Horizen Labs, say there may be inadequate proof that the assault was profitable. Compliance agency AMLBot highlighted the shortage of “large-scale blockchain rewrites” indicating that the assault was profitable, though it warns the assault is “ongoing.” Horizen Labs pointed to an absence of unbiased verification.



“Qubic has claimed it briefly reached majority hashrate, and a few trackers confirmed elevated orphaning/brief reorgs,” James Shuman, head of safety at Horizen Labs, informed Decrypt. “However there’s no unbiased affirmation of a profitable assault or any verified double-spends at the moment.”

Shuman stated that Qubic had picked knowledge from “a self-selected window” of about 4 hours that didn’t verify a 51% assault or point out “sustained consensus management” of the community.

However the pseudonymous Retrodrive from Qubic informed Decrypt that proof was “on-chain and straightforward to confirm,” noting that in a window encompassing 122 blocks, it had mined 63 blocks. “Thus we’ve got surpassed the KPI we put for ourself (51% blocks).”

Retrodrive stated it’ll make a report on the occasion “accessible.”

Different blockchain safety consultants stated that knowledge they noticed additionally indicated the assault was profitable.

“My knowledge reveals that Monero has skilled deep reorgs (as much as 6 blocks) during the last 24 hours,” Nikita Zhavoronkov, CEO of blockchain search and analytics engine Blockchair, wrote. “I might outline this as a profitable 51% assault (low-impact and never long-lasting although). I’ve warned the Monero neighborhood a number of instances in regards to the low safety price range. Bitcoin is subsequent!”

Qubic and its chief Eugene Ivanchenko, extra generally referred to as Come-from-Past, stated that the assault was achieved to “assist Monero to organize for its future fights towards” three-letter authorities businesses. Retrodrive stated that “Qubic doesn’t wish to damage Monero.” 

As a result of Monero is a privacy-centric blockchain, it has a fame of being utilized by malicious actors in crypto to cover their tracks. As such, it’s believed that governments could want to assault it sooner or later.

However holding onto management of a decentralized protocol will be very pricey, because of the computational calls for of holding a majority of the hash fee.

A consultant of the AMLBot investigations group informed Decrypt that “the price of sustaining management of the blockchain” was “extraordinarily excessive,” with Ledger CTO Charles Guillemet estimating the fee at $75 million per day.

“Whereas probably profitable, it threatens to destroy confidence within the community virtually in a single day,” Guillemet wrote on X. “Different miners are left with no incentive to proceed, as Qubic can merely orphan any competing blocks, successfully turning into the only miner.”

In a weblog put up, Qubic stated that its “finish aim” was for Monero’s safety to be supplied by its miners.

“As soon as Qubic absolutely secures the Monero chain, profitability will turn out to be even better for Qubic’s miners, as non-Qubic miners will not obtain any rewards.” Retrodrive stated.

Shuman famous that the occasion raises issues in regards to the susceptibility of the system.

“Don’t concern Qubic, concern the economics,” he stated. “When a well-funded actor overpays miners, they’ll centralize proof-of-work by way of off-chain incentives. The very fact a single pool may plausibly attain ~50% and even declare majority management ought to be a wake-up name to diversify hash and make decentralized defaults the norm.”

In a weblog put up, Qubic trumpeted its success, saying that the occasion had “rewritten the foundations of blockchain competitors,” and that “a $300 million market cap AI protocol has efficiently asserted its dominance over a $6 billion market cap privateness large.”

“The implications of this occasion will resonate all through the crypto trade,” it added.