Security

Privacy

• physicalsecurity• files• browserhistory• cookies,sessions

dell.com

apple.com

GET / HTTP/1.1Host: example.com

HTTP/1.1 200 OKSet-Cookie: session=29823bf3-075a-433a-8754-707d05c418ab

Authentication

• passwords• length,post-itnotes,easytoguess• hashedserver-sideornot• resetting(emailedinclear?)• usingonothersites• changevsnotchange

1. 1234562. 1234567893. qwerty4. 123456785. 1111116. 12345678907. 12345678. password9. 12312310. 987654321

keepersecurity.com

officedepot.com

• two-factorauthentication• keyfob,app,sms

• [emphasizetradeoffs]

rsa.com

google.com

apple.com

NetworkSecurity

• networksecurity• wifi WEP,WPA• xfinity injection• firewall• vpn

quora.com

Encryption

• encryption• symmetric:caesar [discusskeysize]• public-key:RSA

Phishing

Malware

• phishing• virus,worms,malware,botnets

Trust

Security