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+---
+author: Advanced Topics in Security and Privacy (CS 839)
+title: Lecture 01
+date: September 05, 2018
+---
+
+# Security and Privacy
+
+## It's everywhere!
+
+## Stuff is totally insecure!
+
+## It's really difficult!
+
+# What topics to cover?
+
+## A really, really vast field
+- Things we will not be able to cover:
+    - Real-world attacks
+    - Computer systems security
+    - Defenses and countermeasures
+    - Social aspects of security
+    - Theoretical cryptography
+    - ...
+
+## Theme 1: Formalizing S&P
+- Mathematically formalize notions of security
+- Rigorously prove security
+- Guarantee that certain breakages can't occur
+
+> Remember: definitions are tricky things!
+
+## Theme 2: Automating S&P
+- Use computers to help build more secure systems
+- Automatically check security properties
+- Search for attacks and vulnerabilities
+
+## Our focus: four modules
+1. Differential privacy
+2. Applied cryptography
+3. Language-based security
+4. Adversarial machine learning
+
+# Differential privacy
+
+## A mathematically solid definition of privacy
+- Simple and clean formal property
+- Satisfied by many algorithms
+- Degrades gracefully under composition
+
+# Applied crypto
+
+## Computing in an untrusted world
+- Proving you know something without revealing it
+- Certifying that you did a computation correctly
+- Computing on encrypted data, without decryption
+- Computing joint answer without revealing your data
+
+# Language-based security
+
+## Ensure security by construction
+- Programming languages for security
+- Compiler checks that programs are secure
+- Information flow, privacy, cryptography, ...
+
+# Adversarial machine learning
+
+## Manipulating ML systems
+- Crafting examples to fool ML systems
+- Messing with training data
+- Extracting training information
+
+# Tedious course details
+
+## Class format
+- Three components:
+    1. Paper presentations
+    2. Final project
+    3. Class participation
+- Annoucement/schedule/materials: on [website](https://pages.cs.wisc.edu/~justhsu/teaching/current/cs839/)
+- Class mailing list: [compsci839-1-f18@lists.wisc.edu]()
+
+## Paper presentations
+- Sign up to lead a discussion on one paper
+- Suggested topic, papers, and schedule on website
+- Before each presentation:
+    - I will send out brief questions
+    - Please email me brief answers
+
+> If you want advice, come talk to me!
+
+## Final project
+- Work individually or in pairs
+- Project details and suggestions on website
+- Key dates:
+    - **September 19**: Pick groups and topic
+    - **October 15**: Milestone 1
+    - **November 14**: Milestone 2
+    - **End of class**: Final writeups and presentations
+
+> If you want advice, come talk to me!
+
+## Todos for you
+0. Complete the course survey
+1. Check out the course website
+2. Think about what paper you want to present
+3. Brainstorm project topics
+
+# Defining privacy
+
+## What does privacy mean?
+- Many meanings of privacy
+
+## Why is privacy hard?
+
+## Hiding private data
+- Remove "personally identifiable information"
+
+## Problem: not enough
+
+## "Blending in a crowd"
+
+## Problem: composition
+
+## Differential privacy
+
+## Basic definition