This article is primarily an index of common security resources.

OWASP

Open Web Application Security Project®
https://owasp.org/

OWASP Mobile Application Security

https://owasp.org/www-project-mobile-app-security/

HTTP Status Codes

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status

HTTPS Security Headers

https://securityheaders.com/

.Net Encryption of Configuration Files

Encrypt: aspnet_regiis.exe -pef section physical_directory -prov provider
Decrypt: aspnet_regiis.exe -pdf section physical_directory -prov provider
https://learn.microsoft.com