新手请教.

yuuyjn

今天收到一封GD发的信

Our records indicate that you had an anonymous upload script installed on your website that allowed an attacker to upload malicious content to your hosting account. The malicious content was detected and removed by our security team. Please modify your website to validate uploaded files prior to saving them on the server as future incidents may result in account suspension.

用翻译软件看了下，不是很明白，我安装的是Discuz! 6.0.0，不知为什么会发这封信给我？
请教一下这信是什么意思？我要做些什么？谢谢。

大漠孤狼

有人上传恶意附件
让你的网站程序设置检测