[0x: Partial propAMM Quote Manipulation on Base Network, Each Trade May Cause 5 to 10 Basis Points Loss] Foresight News reports that the DEX aggregation protocol 0x has released a report stating that certain propAMMs on the Base network exhibit systemic quote manipulation behavior. Research has found that these operators exploit Base's Flashblock architecture by publishing highly attractive prices in the last approximately 200 milliseconds before the end of a block (i.e., the last Flashblock) to attract aggregator routing, but immediately adjust the prices at the start of the next block. Such behavior typically results in traders incurring an additional loss of 5 to 10 basis points. With a monthly trading volume of $1 billion, a single liquidity source could cause users to lose an additional $500,000 per month. Furthermore, the report highlights that some operators maliciously widen spreads by exploiting the delay between quoting and settlement or manipulate LP rewards through "phantom liquidity," where they deposit large amounts of liquidity just before the end of a block and withdraw it quickly at the start of the next block. This misleads aggregators into directing users to paths with higher slippage due to incorrect depth data. 0x stated that it currently integrates with 5 propAMMs on the Base network but will continuously monitor execution quality and cut off non-compliant liquidity sources to protect users.