Our risk dashboard shows the daily fraud rate and turns red above 0.15%. The average daily rate is 0.10%, with about 50,000 transactions on weekdays and 20,000 on weekends. Last month it went red 6 times, 5 of them on weekends, and every one was a false alarm. The CRO suggests just moving the line to 0.2%. Do you agree, and how would you design the alert?

风控仪表盘每天显示欺诈率，超过0.15%就标红。日均欺诈率0.10%，工作日约5万笔交易，周末约2万笔。上个月标红6次，5次在周末，查下来都没事。CRO说干脆把线调到0.2%。你同意吗？你会怎么设计这个报警？