network security

WEMIX

2026-10-14 04:51:14

WEMIX upgrades CertiK Hunt bug bounty program

WEMIX has announced an upgrade to its CertiK Hunt bug bounty program as it moves to strengthen network security. The updated program is being launched through a collaboration between WEMIX and blockchain security firm CertiK. The item was published by Techub News, with PR Newswire cited as the source. No additional details on the scope of the upgrade, reward structure, or rollout timeline were disclosed in the brief. The announcement centers on security reinforcement and confirms that the new version of the program is a joint effort between the two parties.

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Gemini

2026-09-29 20:02:24

Gemini starts running ZakuraZcash node to validate the Zcash network

Gemini is now running the Zcash node ZakuraZcash, according to a post on X by @tyler cited by Techub News. The update means the crypto exchange is participating in the Zcash network as a validating node. According to the source, Gemini’s involvement could help strengthen the network’s decentralization and security. The report did not provide further technical details or a timeline beyond the post referenced by Techub News.

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Ethereum

2026-09-29 14:05:52

Ethereum validator count reaches 890,000 as consolidation progress draws attention

Techub News, citing a post from @trent_vanepps, said the number of Ethereum validators has reached 890,000. In the same post, he said he hopes validator consolidation can continue to move forward in a steady way from here. The figure points to the scale Ethereum has reached after shifting to proof of stake, and it is commonly used as a reference point for network security, participation, and decentralization. While the update did not include additional on-chain breakdowns or a timeline for the consolidation process, it highlighted validator count as a closely watched metric for the Ethereum network. The post focused on the current total and on expectations for continued consolidation rather than offering a broader market forecast.

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Zcash

2026-09-11 14:22:56

Grayscale research head says Zcash mining remains attractive as returns outpace Bitcoin

Zcash mining is still compelling at current valuations, according to Grayscale Head of Research Zach Pandl, who compared the privacy-focused Bitcoin-like network with Bitcoin on miner economics. While Bitcoin miners collectively earn about $35 million in daily rewards, far more than Zcash’s roughly $2 million, Pandl said Zcash delivers stronger returns at the machine and power-usage level. He wrote that daily revenue per Zcash mining rig is about 2x that of a Bitcoin rig, and revenue per megawatt-hour is about 4x higher than Bitcoin’s. He added that the figure is even above some AI and high-performance computing cloud services. Pandl also said Zcash network mining activity has risen by more than 2.5x this year, driven by strong token price performance. In his view, that has created a loop of rising prices, increased mining, stronger network security, and price support.

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Grayscale

2026-09-11 14:29:12

Grayscale says Zcash mining profitability is running ahead of Bitcoin

Grayscale’s head of research, Zach Pandl, said Zcash is showing stronger mining economics than Bitcoin at current valuation levels, even though the Bitcoin network remains far larger in absolute terms. In his analysis, Pandl described Zcash as a Bitcoin-like digital asset with added privacy features, with both networks relying on proof-of-work mining to secure their chains. According to Grayscale’s estimates, Bitcoin miners collect about $35 million in total rewards per day, versus roughly $2 million for Zcash miners. Even so, Zcash appears more attractive on a per-miner basis. Grayscale estimated that daily rewards per machine on Zcash are about 2x those of Bitcoin, while rewards per megawatt-hour are about 4x higher, though the mining hardware used on the two networks is not interchangeable. Pandl also cited other sources indicating that Zcash mining revenue per megawatt-hour is currently above that of some AI and high-performance computing cloud services. He said the higher profitability is drawing in more mining activity. Measured by a standard hashrate metric, total Zcash mining activity has risen by more than 2.5x this year, which Grayscale said is helping bring more computing power onto the network and support security.

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Vitalik Buter

2026-09-07 04:56:07

Vitalik Rebuts AI Threat to Bitcoin Security, Says Technical Upgrades Are Key

Silicon Valley angel investor Liron Shapira expressed a 50% confidence that Bitcoin's price could drop more than 50% in the next two years, citing AI's rapid development as potentially undermining market confidence in Bitcoin's security and robustness. Ethereum co-founder Vitalik Buterin disagreed, remaining optimistic about long-term network security. He argued that the main challenge is executing the transition, noting that Bitcoin can handle issues not requiring social consensus, such as upgrading clients and mining pools to counter network-layer attacks. Vitalik deemed the probability of a successful attack on hash algorithms or the PoW mechanism extremely low. He revealed that he has bet on this view through asset allocation, with approximately 90% of his net worth now in crypto assets.

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cryptocurrenc

2026-09-06 16:00:00

Ukrainian Police Bust Crypto Scam Siphoning $1M Monthly

Ukrainian police disrupted a cryptocurrency scam that allegedly stole up to $1 million per month. Authorities identified 62 victims and said over 46 Ukrainians were involved in the operation.

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Polygon

2026-08-29 20:28:51

Polygon reveals PoS network flaws patched through recent hard forks

Polygon has disclosed a set of previously nonpublic security vulnerabilities affecting its proof-of-stake network after fixes were deployed through the Austin and Kyoto hard forks. According to a Thursday notice from Polygon Labs’ Validators Support Team, the issues involved the Bor and Heimdall clients and included denial-of-service risks, validator resource exhaustion, and flaws tied to checkpoint and milestone processing. The company said the updates were rolled out privately, tested, and only then activated on mainnet before the vulnerabilities were made public. Polygon added that it did not observe any of the flaws being exploited on mainnet. The most serious issue involved Heimdall, where a specially crafted transaction could have forced validators into excessive processing work. Austin also fixed two Bor denial-of-service bugs that could have slowed block handling or crashed nodes. Nodes still running old software past the hard fork activation heights have already fallen out of consensus and must upgrade to rejoin the canonical network. Bor v2.10.0 is required for all Polygon PoS nodes, while Heimdall v0.11.0 is required for validators and full nodes. CoinGecko data showed POL trading around $0.10 at the time of writing.

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