/usr/share/apt-setup/release-files/security.ubuntu.com/xenial-security/ is in ubiquity 18.04.14.
This file is owned by root:root, with mode 0o755.
| File | Mime Type | Owner | Mode | Size | 
|---|---|---|---|---|
                
                    
    
        
    
    
    ..
    
        
    
                
             | 
        ||||
                    
    
        
    
    
    /usr/share/apt-setup/release-files/security.ubuntu.com/xenial-security/Release
    
        
    
                 | 
                text/plain | root:root | 0o644 | 62.0 KB | 
                    
    
    
    /usr/share/apt-setup/release-files/security.ubuntu.com/xenial-security/Release.gpg
    
                 | 
                application/pgp-signature | root:root | 0o644 | 933 bytes |