10th summary

Public & Private

Surveillance
- close watch kept over someone or something
- Etymology: French, from surveiller to watch over, from sur- + veiller to watch, from Latin vigilare, from vigil watchful
- “They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.”
Benjamin Franklin, 1759 Historical Review of Pennsylvania

What is privacy?
1.
a. the quality or state of being apart from company or observation
b. SECLUSION: freedom from unauthorized intrusion "one's"
2. archaic : a place of seclusion

Privacy already exposure everything.
We can not keep privacy.

•standard HTTP headers:
–From: User’s email address
–User-Agent: User’s browser software
–Referer: Page user cam from by following a link
–Authorization: User name and password
–Client-IP: Clien’t IP address
–Cookie: Server-generated ID label

Data mining
- classification: given a set of categories and a datum, put it into the correct category
- clustering: given a data set divide it into groups

search engines make many things public.(Data mining)
Someone would like to avoid data mining.