HTTPS
Hypertext Transfer Protocol Secure (HTTPS) is an extension of the Hypertext Transfer Protocol (HTTP) for secure communication over a computer network, and is widely used on the Internet. In HTTPS, the communication protocol is encrypted using Transport Layer Security (TLS), or, formerly, its predecessor, Secure Sockets Layer (SSL). The protocol is therefore also often referred to as HTTP over TLS, or HTTP over SSL.
HTTP POST flood
An HTTP POST flood (or simply POST flood) is a denial of service attack that uses POST requests, which are part of the Hypertext Transfer Protocol (HTTP). It is one kind of HTTP Flood attack.