HTTPS . , , (sniffing xss), /. The OWASP Top 10 2010 A3 . , .
md4, md5 sh0 sha1 - , . sha-2 - , sha256 .
- /. , . SQL-, - , , -. , .
superglobal $_SESSION session_start(), , . PHP , .
session_start();
if(!$_SESSION['logged_in']){
die("Authentication required!");
}
, CSRF. CSRF, , . XSS, xss , xss XHR document.cookie. SQL Injection , wapiti .