WebFund 2014W Lecture 15: Difference between revisions
| Line 30: | Line 30: | ||
==Points of Vulnerability== | ==Points of Vulnerability== | ||
What access does the attacker have? | |||
# hardware (chips)? | |||
# physical/virtual access to machine? | |||
#* burglary | |||
#* "insider attacks": sysadmins, cloud providers | |||
#* Digital Rights Management (DRM) | |||
# malicious input | |||
Last is most significant for web security | |||
Revision as of 18:41, 7 March 2014
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.
Attacker Goals
- steal private information (e.g., financial)
- reduce availability
- impact reputation
- perform malicious operations (using existing functionality)
- steal money
- blow up a reactor
- use application to achieve attacker's goals
- monitor usage (spying)
- data tampering
Points of Vulnerability
What access does the attacker have?
- hardware (chips)?
- physical/virtual access to machine?
- burglary
- "insider attacks": sysadmins, cloud providers
- Digital Rights Management (DRM)
- malicious input
Last is most significant for web security