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Vitalik Buterin unveils roadmap to counter quantum computing threat

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Vitalik Buterin issues a blunt reality check to the biggest crypto networks

Ethereum co-founder Vitalik Buterin outlined a roadmap on Thursday to protect the blockchain from the long-term risks posed by quantum computers — a move that comes shortly after the Ethereum Foundation established a dedicated post-quantum research team to study the issue.

Although practical quantum computers capable of breaking modern cryptography do not yet exist, they could one day crack the digital signatures and cryptographic systems that secure Ethereum.

In a post on X, Buterin identified four key areas of vulnerability: validator signatures used in consensus, Ethereum’s data availability system, everyday wallet signatures, and certain zero-knowledge proofs used by applications and layer-2 networks.

A big part of the plan involves changing how Ethereum’s validators sign and confirm blocks. Right now, they use a type of digital signature called BLS. In a world with powerful quantum computers, those signatures could eventually be broken. Buterin suggests switching to “hash-based” signatures, which are considered much safer against quantum attacks.

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Another area that would need updating is how Ethereum checks and stores large batches of transaction data. The system it uses today relies on a cryptographic tool called KZG commitments. Replacing that with a quantum-safe alternative is possible, Buterin said, but it would require significant behind-the-scenes engineering work and could make some parts of the system more complicated.

For everyday users, the proposed fix revolves around a planned upgrade called EIP-8141. In simple terms, this upgrade would make Ethereum wallets more flexible. Today, most wallets rely on one standard type of digital signature to approve transactions. EIP-8141 would allow accounts to switch to different types of signatures in the future — including ones designed to be safe against quantum computers.

There’s a similar issue with zero-knowledge proofs, a type of advanced cryptography used by privacy tools and many layer-2 scaling networks. Quantum-safe versions of these proofs are currently far more expensive to verify on Ethereum.

Buterin pointed to a longer-term solution built into EIP-8141 known as “validation frames.” These would allow the network to bundle together many signatures and proofs and replace them with a single combined proof. Instead of checking each one individually on the blockchain, Ethereum would only need to verify one compressed proof, helping keep costs down.

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Read more: Quantum threat gets real: Ethereum Foundation prioritizes security with leanVM and PQ signatures

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Crypto World

Hong Kong Retiree Loses $840K in Triple Crypto Scam

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Cryptocurrencies, Fraud, Hong Kong, Scams, Social Engineering

A 66-year-old Hong Kong retiree lost 6.6 million Hong Kong dollars (roughly $840,000) in a string of three related crypto investment scams after repeatedly trusting self-proclaimed “virtual currency experts” who reached out via WhatsApp, according to Hong Kong police’s CyberDefender unit.

In a March 20 Facebook post, police said the victim was first approached in September 2025 by a scammer who cold messaged, claiming to be a “virtual currency investment expert” and promising steady gains if the victim followed his advice. The retiree then transferred $180,000 and deposited crypto into a wallet the scammer controlled, only to watch him disappear, prompting the filing of a police report.

The case shows how fraudsters can recycle the same victim through successive schemes that start with “guaranteed profit” pitches and escalate into offers to recover funds that have already been stolen.

“Life has no take two; but scams can have take three,” the CyberDefender team wrote, warning that genuine professionals do not rely on random outreach and that phrases such as “guaranteed returns” and “inside information” are classic red flags. 

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Related: How US investigators traced $61M in crypto tied to romance scams across wallets

Cryptocurrencies, Fraud, Hong Kong, Scams, Social Engineering
Hong Kong retiree loses $840,000 in triple crypto scam. Source: CyberDefender

Triple “crypto expert” scam drains retiree’s savings

The retiree then transferred $180,000 and deposited crypto into a wallet the scammer controlled, only to watch him disappear, prompting the victim to file a police report.

​Unwilling to accept the loss, the victim later searched online for another “crypto expert” who claimed he could help recover the missing funds, but then demanded $75,000 as a security deposit. After the victim paid, that expert also vanished.

In January, a third supposed specialist messaged the retiree on WhatsApp offering to reclaim both prior losses if the victim bought $585,000 in crypto and sent it to a specified address. Once the victim complied, that scammer disappeared as well, bringing the total losses over roughly six months to approximately $840,000.

​Incident falls amid rising Web3 fraud

The case lands against a broader backdrop of mounting crypto-related crime. Web3 platforms saw about $3.95 billion in losses in 2025, with state-linked hackers and weak key security driving much of the damage, according to security firm Hacken.

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Authorities worldwide have also flagged new waves of phishing and investment fraud, from the FBI’s recent warning over fake FBI tokens on Tron to India’s GainBitcoin probe and US efforts to forfeit $3.4 million in Tether tied to a multi-state investment scam.

Magazine: Influencers shilling memecoin scams face severe legal consequences