WebFund 2014W Lecture 15

Web Security

Security is (roughly):

• confidentiality
• integrity
• availability

Cryptography (SSL, secure hashes) are tools for achieving security. But they are not the only ones.

Security really matters for web applications because, by design, most are accessible by anyone in the world.

Threat Models

• what are the attacker goals?
• how may they achieve them?
• in other words, how are you in danger? What are the risks?

There are always attacks outside of your threat model.