2022/11/14：新发现了公文通存在简单的隐水印，于是打算简单的做点儿应对措施，但估计后面会变复杂，届时需要持续更新，但作者不见得会跟进，所以请别对此抱有过多信心。切记，靠山山倒，靠水水流，信息安全靠自己
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