The Shiba Inu team is implementing a critical security upgrade for Shibarium, enhancing decentralization by retiring the old public RPC connection within two weeks and requiring users to switch to new endpoints. This follows a September security incident where an attacker exploited validator keys, leading to network pauses and the addition of safeguards like address blacklisting and a seven-day withdrawal delay. Meanwhile, SHIB ended October with its first monthly loss of 15.9%, hitting a low of $0.0000085, but has since risen 2.29% to $0.00001013 as markets rebound.