解决方案

“APT”包管理器设置为通过加密HTTP协议拒绝更新。
默认的/etc/apt/sources.list文件列出没有HTTPS协议的存储库。

最简单的修复是用安全的HTTPS协议替换现有的HTTP协议。

修改/etc/apt/sources.list文件：

将
deb http.kali.org/kali kali-rolling main non-free contrib
改成 https
deb https.kali.org/kali kali-rolling main non-free contrib

问题

运行apt update命令时会出现以下错误消息：

Err:1 http.kali.org/kali kali-rolling InRelease
  403  Forbidden [IP: 192.99.200.113 80]
Reading package lists... Done
E: Failed to fetch http.kali.org/kali/dists/kali-rolling/InRelease  403  Forbidden [IP: 192.99.200.113 80]
E: The repository 'http.kali.org/kali kali-rolling InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Kali Linux存储库更新错误。