root@kali:~# apt-get update
Ign:1 http://http.kali.org/kali sana InRelease
Ign:2 http://security.kali.org/kali-security sana/updates InRelease
Err:3 http://http.kali.org/kali sana Release
404 Not Found [IP: 192.99.200.113 80]
Err:4 http://security.kali.org/kali-security sana/updates Release
404 Not Found [IP: 192.99.200.113 80]
Reading package lists... Done
E: The repository 'http://http.kali.org/kali sana Release' does not have a Release file.
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.
E: The repository 'http://security.kali.org/kali-security sana/updates Release' does not have a Release file.
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.
root@kali:~#