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first_img Arbitrum Security Committee urgently suspended the activation of the new contract Stylus and added BoLD protection

On October 2, at 11:30 AM Eastern Time, the Arbitrum Security Committee executed an emergency upgrade on Arbitrum One and Nova, suspending the activation of all new Stylus contracts on both chains, while adding a protective mechanism against BoLD single-step proofs in the dispute system of Arbitrum One. The Arbitrum Foundation stated that this action is part of ongoing proactive security measures aimed at protecting the security and integrity of the network.Stylus allows developers to write smart contracts using languages such as Rust and C++, while maintaining compatibility with the Ethereum Virtual Machine, with its programs compiled into WebAssembly format. This suspension primarily targets manually written WASM programs that do not use the standard Stylus compiler toolchain and have not yet been patched by the current version of ArbOS. The Security Committee increased the gas required for activation to the theoretical maximum by calling ArbOwner.setWasmActivationGas(2^64 - 1), making new activations economically unfeasible. Activated Stylus contracts are unaffected and can continue to execute and renew, and the deployment and execution of Solidity contracts are also unrestricted.The newly added BoLD protection allows anyone to pause the settlement from Arbitrum One to Ethereum when two conflicting and accepted answers appear in the same dispute step, which may delay unconfirmed withdrawals to allow the Security Committee to deploy fixes. Officials pointed out that the currently discovered Stylus-related vulnerabilities mainly affect the activity of the chain, such as denial-of-service attacks, and do not jeopardize user funds.

first_img Tavus claims that the Griffin model causes 48% of video call participants to mistakenly believe they are interacting with a real person

AI startup Tavus released a new model called Griffin on October 1, referring to it as the first "human interaction model" that can understand and generate face-to-face conversations, paying attention not only to wording but also to expressions and pauses. Tavus stated that in tests, after a one-minute video call with Griffin-Lite, 26 out of 54 participants (48%) believed the other party was a real person; its previous generation system only convinced 1 out of 41 participants.Participants were told they would have a one-minute video call with another person to discuss things they were looking forward to this year, and only at the end of the call were they asked if they suspected the other party was not a real person. Tavus noted that those who became suspicious typically noticed within 20 seconds. This result comes from Tavus's own research page, where participants were recruited through a channel they call an independent research platform. Community comments on X pointed out that these results have not been independently verified and do not meet standard protocols.In the NVIDIA VideoFDB benchmark, Tavus claimed Griffin-Lite ranked first, with a generation dimension score of 3.83, the next best system scoring 2.8, and human reference scoring 3.92; the perception dimension score was 3.73, with the strongest baseline at 3.44 and human reference at 4.2. Tavus stated that NVIDIA independently conducted this evaluation. Griffin supports full duplex, allowing it to listen, see, and speak simultaneously, with an average audio-video delay of 0.43 seconds on the NVIDIA H100 chip. Tavus completed a $40 million Series B funding round led by CRV in November 2025.

Drift's compensation plan has caused dissatisfaction, with a loss of about 1 dollar for every 100 dollars

The perpetual contract protocol Drift (now Velocity) Foundation has opened claims and redemptions for the security incident on April 1. Affected users can claim newly issued compensation tokens DFX at a rate of 1 DFX for every $1 of verified loss. DFX is a Solana standard SPL asset, with a fixed total supply of approximately 299.5 million tokens, corresponding to about $295.4 million in verified losses, and no further issuance will occur.Users can destroy DFX on the official portal and redeem it for USDT at the redemption price, or trade it on secondary markets like Raydium. The redemption price is determined by the balance of the recovery pool divided by the number of DFX tokens that have not yet been destroyed. Currently, there are about 3.11 million USDT in the pool, with a redemption price of approximately $0.0104, allowing for about $1 back for every $100 lost, covering about 1% of the losses, which has caused dissatisfaction in the community, believing there is a significant gap from the expected full compensation.The plan also includes a maximum support commitment of $127.5 million from Tether, up to $20 million from partners, as well as subsequent sources such as transaction fee sharing from the new trading platform Velocity and the recovery of stolen funds, most of which are upper limits or installment arrangements, and were not included in the pool on the opening day. After the DFX launch, the redemption price remains around $0.0104, while the secondary market trading price has risen from about $0.01 to approximately $0.03, with a 24-hour increase of about 210%, and liquidity at that time was around $200,000. The tokens can be freely transferred, and the trading price does not have to equal the redemption price; buyers are mainly concerned with subsequent funding, protocol revenue, recovered funds, as well as the impact of early redemptions and the destruction of unclaimed portions after the window closes on January 1, 2028.
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