Leveraged funds’ Bitcoin futures shorts fall by 5,300 BTC-equivalent as longs shrink

Leveraged funds’ reported Bitcoin futures shorts fell by about 5,300 BTC-equivalent in the week to Sept. 29, narrowing their net short even as their aggregate long exposure shrank. The Commodity Futures Trading Commission’s latest futures-only figures, released in the Oct. 2 reporting cycle, cover CME standard and micro Bitcoin futures plus Coinbase Derivatives’ nano Bitcoin…

Arbitrum pauses new Stylus activations over AI-assisted attack risks

Arbitrum’s Security Council temporarily blocked new Stylus contract activations on Arbitrum One and Nova in an October 2 emergency action, restricting programs and app updates that require fresh activation. Already-active Stylus applications can keep running, while ordinary Solidity contract deployment and execution remain unaffected, according to the Council’s action report. Arbitrum attributed the precaution to…