According to the source, a social post claimed a “poisoned transaction” disrupted the Cardano network and affected ADA transaction processing (source: user-submitted post dated Nov 21, 2025). The supplied content did not include corroboration from Input Output Global (IOG) or the Cardano Foundation, nor links to a verifiable on-chain status or incident report (source: provided post). Given the lack of official confirmation in the provided materials, traders should treat this as unverified and focus on monitoring ADA spot price, derivatives funding rates, order book depth/ spreads, and any abnormal mempool growth or stake pool operator notices before adjusting exposure (source: risk-management best practices based on market monitoring norms).