Arbitrum Halts New Stylus Activations in Emergency Security Move

The pause targets only new Stylus activations, leaving existing contracts running and renewable, which suggests the risk is contained to the onboarding path rather than live deployments. The coupling with a BoLD guard that could delay unconfirmed withdrawals is the more consequential detail: it introduces a friction point on the exit side, where any accepted contradictory proof now carries a timing cost. Whether the activation freeze stays narrow or extends to broader Stylus usage is the open question, and it will shape how developers weigh Arbitrum's contract environment against alternatives.