网站被压缩包软件扫描了，具体特征为：

121.36.11.131 - - [05/Nov/2021:16:06:43 +0800] "HEAD / HTTP/1.1" 200 0 "https://bbs.aiyiliu.com" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.92 Safari/537.36"

121.36.11.131 - - [05/Nov/2021:16:06:45 +0800] "HEAD /web.zip HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/web.zip" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:06:47 +0800] "HEAD /web.rar HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/web.rar" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:06:49 +0800] "HEAD /web.tar.gz HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/web.tar.gz" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:06:49 +0800] "HEAD /wwwroot.zip HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/wwwroot.zip" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:06:51 +0800] "HEAD /wwwroot.rar HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/wwwroot.rar" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:06:52 +0800] "HEAD /wwwroot.tar.gz HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/wwwroot.tar.gz" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:06:52 +0800] "HEAD /www.zip HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/www.zip" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:06:59 +0800] "HEAD /www.rar HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/www.rar" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:00 +0800] "HEAD /www.tar.gz HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/www.tar.gz" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:00 +0800] "HEAD /1.zip HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/1.zip" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:00 +0800] "HEAD /1.rar HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/1.rar" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:02 +0800] "HEAD /1.tar.gz HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/1.tar.gz" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:02 +0800] "HEAD /hdocs.zip HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/hdocs.zip" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:02 +0800] "HEAD /hdocs.rar HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/hdocs.rar" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:03 +0800] "HEAD /hdocs.tar.gz HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/hdocs.tar.gz" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:04 +0800] "HEAD /bak.zip HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/bak.zip" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:04 +0800] "HEAD /bak.rar HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/bak.rar" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:04 +0800] "HEAD /bak.tar.gz HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/bak.tar.gz" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:05 +0800] "HEAD /aiyiliu.zip HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/aiyiliu.zip" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:06 +0800] "HEAD /aiyiliu.com.zip HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/aiyiliu.com.zip" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:07 +0800] "HEAD /bbs.aiyiliu.com.zip HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/bbs.aiyiliu.com.zip" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:08 +0800] "HEAD /aiyiliu.rar HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/aiyiliu.rar" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:09 +0800] "HEAD /aiyiliu.com.rar HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/aiyiliu.com.rar" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:09 +0800] "HEAD /bbs.aiyiliu.com.rar HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/bbs.aiyiliu.com.rar" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:09 +0800] "HEAD /aiyiliu.tar.gz HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/aiyiliu.tar.gz" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:10 +0800] "HEAD /aiyiliu.com.tar.gz HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/aiyiliu.com.tar.gz" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

121.36.11.131 - - [05/Nov/2021:16:07:10 +0800] "HEAD /bbs.aiyiliu.com.tar.gz HTTP/1.1" 404 0 "https://bbs.aiyiliu.com/bbs.aiyiliu.com.tar.gz" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)"

软件包扫描的枚举大体就上面几种，基本都是与域名以及网站目录相关，大家备份文件的时候注意一下，并且可以屏蔽掉扫描软件ip:121.36.11.131