How can I secure my website from injections (Cookie editing)

How can I secure my website from injections (Cookie editing)

References

Reference NO 1

http://stackoverflow.com/questions/15165401/how-can-i-secure-my-website-from-injections-cookie-editing

Reference NO 2

http://stackoverflow.com/questions/4520118/what-harm-can-javascript-do

Reference NO 3

http://www.codinghorror.com/blog/2008/08/protecting-your-cookies-httponly.html

Reference NO 4

http://null-byte.wonderhowto.com/how-to/use-javascript-injections-locally-manipulate-websites-you-visit-0130601/

Reference NO 5

http://www.troyhunt.com/2013/03/c-is-for-cookie-h-is-for-hacker.html

Reference NO 6

http://security.stackexchange.com/questions/2087/how-to-hijack-a-session

Reference NO 7

http://www.testingsecurity.com/how-to-test/injection-vulnerabilities/Javascript-Injection

Reference NO 8

https://qualysguard.qualys.com/qwebhelp/fo_help/module_was/troubleshooting/bypass_authentication/tr_how_to_replay_cookie_based_session_tokens.htm