[Arbitrum One, Nova and Sepolia have completed the ArbOS 32 upgrade, and relevant parties need to upgrade to Nitro v3.2.0 as soon as possible] Golden Finance reported that Arbitrum Developers published a post on X stating that the ArbOS 32 upgrade has been completed on Arbitrum One, Nova and Sepolia. If users are running nodes on these networks and have not yet upgraded, please upgrade the nodes to at least Arbitrum Nitro v3.2.0 immediately. For Validator nodes, please upgrade to v3.2.1. This upgrade was coordinated with the Security Council, which approved an emergency action to address (1) incorrect pricing issues in Arbitrum Stylus, which could lead to denial of service attacks; (2) issues that allow malicious contracts to cause node crashes; (3) incorrect pricing issues in which Stylus contracts are overcharged due to SLOAD operations. No funds are at risk. In addition, the team will soon release a full analysis report.