我感觉这种事情银行应该是有责任的：

银行绝对是有责任的！ "The wire transfers from Plaintiffs' BofA account — from which no wire transfers had ever previously been sent — had increased from $700,000.00 to $2,000,000.00 to $3,500,000.00 to $5,000,000.00," according to the suit. "BofA had clear and actual knowledge of the increasing amount of the wire transfers being sent from Plaintiffs' BofA account in a short period of time, yet BofA continued to authorize them."