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Outline


1. What is Cybersecurity?
1.1 Module Overview - Cybersecurity
Video 1.1.1 Welcome to Cybersecurity
Check for Understanding 1.1.2 Welcome to Cybersecurity
Example 1.1.3 Intruder Alert!
Free Response 1.1.4 Cybersecurity and You
Free Response 1.1.5 Course Goals
1.2 What is Cybersecurity?
Video 1.2.1 What is Cybersecurity?
Check for Understanding 1.2.2 What is Cybersecurity?
Connection 1.2.3 WannaCry Ransomware Attack
Free Response 1.2.4 WannaCry Reflection
Example 1.2.5 Ransomware Simulator
Connection 1.2.6 Internet of Things
Connection 1.2.7 Cybersecurity and Connected Cars
Free Response 1.2.8 Internet of Things Reflection
1.3 Impact of Cybersecurity
Video 1.3.1 Impact of Cybersecurity
Check for Understanding 1.3.2 Impact of Cybersecurity
Example 1.3.3 Phishing Simulator
Connection 1.3.4 Yahoo! Attack
Free Response 1.3.5 Yahoo! Reflection
Connection 1.3.6 Fighting Cyber Crime
Free Response 1.3.7 Cyber Crime Reflection
Connection 1.3.8 FBI Cyber Crime
Free Response 1.3.9 FBI Reflection
1.4 The CIA Triad
Video 1.4.1 CIA Triad
Check for Understanding 1.4.2 CIA Triad
Free Response 1.4.3 Which part of the CIA Triad?
Free Response 1.4.4 Which part of the CIA Triad?
Free Response 1.4.5 Breach of Confidentiality
Free Response 1.4.6 Breach of Availability
Free Response 1.4.7 CIA Connections
1.5 What is Cybersecurity? Quiz
Unit Quiz 1.5.1 What is Cybersecurity? Quiz
2. Digital Citizenship and Cyber Hygiene
2.1 Digital Footprint and Reputation
Video 2.1.1 Digital Footprint and Reputation
Check for Understanding 2.1.2 Digital Footprint and Reputation
Example 2.1.3 Social Media Clean-up
Free Response 2.1.4 Building a Positive Digital Footprint
Connection 2.1.5 Right to be Forgotten?
Free Response 2.1.6 Right to be Forgotten
Free Response 2.1.7 What is your Digital Footprint?
2.2 Cyberbullying
Video 2.2.1 Cyberbullying
Check for Understanding 2.2.2 Cyberbullying
Free Response 2.2.3 Scenario: Student Ranking
Free Response 2.2.4 Scenario: Singled Out
Free Response 2.2.5 Stopping Cyberbullying
2.3 Internet Safety
Video 2.3.1 Internet Safety
Check for Understanding 2.3.2 Internet Safety
Free Response 2.3.3 Scenario: School Stranger
Free Response 2.3.4 Scenario: Vacation Pals
Free Response 2.3.5 Staying Safe
2.4 Privacy & Security
Video 2.4.1 What is Data Privacy & Security?
Check for Understanding 2.4.2 Privacy & Security Quiz
Connection 2.4.3 Google Privacy Policy Search
Free Response 2.4.4 Google Privacy Policy Search
Example 2.4.5 Guess: Password List
Example 2.4.6 Guess: Using an Algorithm
Example 2.4.7 Guess: Brute Force
Connection 2.4.8 How Strong is your Password?
Free Response 2.4.9 How Strong is your password?
Example 2.4.10 You Can Be Tracked!
2.5 Information Literacy
Video 2.5.1 Information Literacy
Check for Understanding 2.5.2 Information Literacy
Free Response 2.5.3 Effective Internet Searches
Connection 2.5.4 Evaluate the Source 1
Free Response 2.5.5 Respond: Evaluate the Source 1
Connection 2.5.6 Evaluate the Source 2
Free Response 2.5.7 Respond: Evaluate the Source 2
Connection 2.5.8 Hero Pig?
Free Response 2.5.9 Respond: Hero Pig?
2.6 Creative Credit & Copyright
Video 2.6.1 Creative Credit and Copyright
Check for Understanding 2.6.2 Creative Credit and Copyright
Free Response 2.6.3 Cite!
Connection 2.6.4 Exploring Creative Commons
Free Response 2.6.5 Respond: Creative Commons
Free Response 2.6.6 Task: Finding Images
Free Response 2.6.7 Reflection: Why is Copyright Important?
2.7 Hacking Ethics
Video 2.7.1 Hacking Ethics & Legality
Check for Understanding 2.7.2 Hacking Ethics & Legality
Connection 2.7.3 Penetration Testing
Free Response 2.7.4 Reflection: Penetration Testing
Connection 2.7.5 Hack the Pentagon?
Free Response 2.7.6 Reflection: Hack the Pentagon
Check for Understanding 2.7.7 Ethical Hacker Agreement
2.8 Digital Citizenship and Cyber Hygiene Quiz
Unit Quiz 2.8.1 Digital Citizenship and Cyber Hygiene Quiz
3. Project: Public Service Announcement
3.1 Project: Public Service Announcement
Free Response 3.1.1 Pick a Topic
Free Response 3.1.2 Research
Free Response 3.1.3 Choose Your Audience
Free Response 3.1.4 What kind of PSA?
Free Response 3.1.5 Draft your PSA
Free Response 3.1.6 Finalize your PSA!
4. Programming Fundamentals
4.1 Programming Concepts
Video 4.1.1 Programming Concepts
Check for Understanding 4.1.2 Programming Concepts Quiz
Connection 4.1.3 Compilers vs. Interpreters
Free Response 4.1.4 Compilers vs. Interpreters
Example 4.1.5 Variables in Action
Example 4.1.6 Data Types using Typeof
Example 4.1.7 Basic Variables
Exercise 4.1.8 Daily Activities
4.2 Programming with Karel
Notes 4.2.1 Learning to Program
Video 4.2.2 Programming With Karel
Check for Understanding 4.2.3 Quiz: Karel Commands
Example 4.2.4 Our First Karel Program
Exercise 4.2.5 Your First Karel Program
Video 4.2.6 Functions in Karel
Check for Understanding 4.2.7 Functions in Karel Quiz
Example 4.2.8 Turn Around
Example 4.2.9 Digging Karel
Exercise 4.2.10 Backflip
4.3 Looping
Video 4.3.1 For Loops
Check for Understanding 4.3.2 For Loops Quiz
Example 4.3.3 Take 'em All
Example 4.3.4 For Loop Square
Exercise 4.3.5 Lots of Hurdles
Video 4.3.6 While Loops in Karel
Check for Understanding 4.3.7 While Loops in Karel Quiz
Example 4.3.8 Move to Wall
Example 4.3.9 Big Tower
Exercise 4.3.10 Follow The Yellow Ball Road
4.4 Branching
Video 4.4.1 If/Else Statements
Check for Understanding 4.4.2 If/Else Statements Quiz
Example 4.4.3 If/Else Statements
Example 4.4.4 One Ball in Each Spot
Exercise 4.4.5 Right Side Up
Badge 4.4.6 Programming with Karel Badge
4.5 Arrays and Objects
Notes 4.5.1 More JS Topics
Video 4.5.2 Arrays and Objects
Check for Understanding 4.5.3 Arrays and Objects
Example 4.5.4 Making an Array
Exercise 4.5.5 List of Places to Travel
Exercise 4.5.6 List of Prime Numbers
Example 4.5.7 Phonebook
Exercise 4.5.8 Sidekicks
4.6 Organizational Techniques
Video 4.6.1 Organizational Techniques
Check for Understanding 4.6.2 Organizational Techniques Quiz
Example 4.6.3 Hurdle Karel
Exercise 4.6.4 One Ball in Each Spot
Exercise 4.6.5 The Two Towers
Example 4.6.6 Interactive Sequence Diagram
4.7 Programming Fundamentals Quiz
Survey 4.7.1 Mindsets
Unit Quiz 4.7.2 Programming Fundamentals Quiz
5. The ABCs of Cryptography
5.1 Cryptography, Cryptology, Cryptanalysis
Video 5.1.1 Cryptography, Cryptology, Cryptanalysis
Check for Understanding 5.1.2 Cryptography, Cryptology, Cryptanalysis
Example 5.1.3 Cryptogram Game!
Video 5.1.4 Why encrypt?
Check for Understanding 5.1.5 Why encrypt?
Example 5.1.6 Encrypt/Decrypt
5.2 History of Cryptography
Video 5.2.1 Cryptography: A Brief History
Check for Understanding 5.2.2 Cryptography History Quiz
Connection 5.2.3 How the Enigma Worked
Free Response 5.2.4 How the Enigma Worked
Connection 5.2.5 Unknown Languages and the Future of Cryptography
Free Response 5.2.6 The Future of Cybersecurity
5.3 Basic Crypto Systems: Caesar Cipher
Video 5.3.1 Caesar Cipher
Check for Understanding 5.3.2 Caesar Cipher
Example 5.3.3 Caesar Cipher Encryption
Example 5.3.4 Decrypt Caesar's Cipher!
5.4 Basic Crypto Systems: Cracking Caesar
Video 5.4.1 Cracking Caesar Cipher
Check for Understanding 5.4.2 Cracking Caesar Cipher
Example 5.4.3 Cracking Caesar with Brute Force
Example 5.4.4 Letter Frequency and Caesar
Free Response 5.4.5 Examining Caesar Cipher
5.5 Basic Crypto Systems: Vigenere Cipher
Video 5.5.1 Vigenere Cipher
Check for Understanding 5.5.2 Vigenere Cipher
Example 5.5.3 Vigenere Cipher Example
Example 5.5.4 Letter Frequency and Vigenere Cipher
Free Response 5.5.5 Examining Vigenere Cipher
Example 5.5.6 Improving Vigenere
5.6 The ABCs of Cryptography Quiz
Unit Quiz 5.6.1 The ABCs of Cryptography Quiz
6. Project: Classic Cipher Newscast
6.1 Project: Classic Cipher Newscast
Notes 6.1.1 Overview
Notes 6.1.2 Investigate a Classic Cipher
Free Response 6.1.3 Write the Script and Rehearse
Free Response 6.1.4 Newscast Presentation
7. System Administration
7.1 Operating Systems
Video 7.1.1 Operating Systems
Check for Understanding 7.1.2 Operating Systems Quiz
Example 7.1.3 Detect My OS
Connection 7.1.4 Upgrading a Mac OS
Example 7.1.5 Windows OS Installation Simulation
Free Response 7.1.6 Installing an OS
7.2 Comparing Operating Systems
Video 7.2.1 Comparing Operating Systems
Check for Understanding 7.2.2 Comparing Operating Systems Quiz
Example 7.2.3 Windows Simulation
Example 7.2.4 MacOS Simulation
Connection 7.2.5 Choose a Linux Distro!
Free Response 7.2.6 Which would you choose?
7.3 Compatibility
Video 7.3.1 Compatibility
Check for Understanding 7.3.2 Compatibility Quiz
Example 7.3.3 What Processor? Windows
Example 7.3.4 What Processor? Mac
Free Response 7.3.5 What Processor are you running?
7.4 Software and Applications
Video 7.4.1 Software and Applications
Check for Understanding 7.4.2 Software and Applications Quiz
Example 7.4.3 Spreadsheet Simulation
Example 7.4.4 Messaging Simulation
Example 7.4.5 Kanban Board Simulation
Free Response 7.4.6 Software Simulations
7.5 Software Licenses
Video 7.5.1 Software Licenses
Check for Understanding 7.5.2 Software Licenses Quiz
Free Response 7.5.3 Do I need a Software License?
Free Response 7.5.4 Is This Original?
7.6 Application Security
Video 7.6.1 Application Security
Check for Understanding 7.6.2 Application Security
Example 7.6.3 Windows Updates
Connection 7.6.4 Windows Defender Antivirus
Free Response 7.6.5 Windows Defender Antivirus
Free Response 7.6.6 CodeHS System Restore
7.7 Browser Configuration
Video 7.7.1 Browser Configuration
Check for Understanding 7.7.2 Browser Configuration
Connection 7.7.3 Cached CodeHS
Free Response 7.7.4 Cached CodeHS
Example 7.7.5 Is Your Popup Blocker On?
Free Response 7.7.6 Browser Extensions Lab
7.8 System Administration
Video 7.8.1 User Accounts
Check for Understanding 7.8.2 User Accounts Quiz
Free Response 7.8.3 User Accounts
Free Response 7.8.4 Shared Folders and Files
Video 7.8.5 Host Security
Check for Understanding 7.8.6 Host Security Quiz
Free Response 7.8.7 Security Baseline
7.9 Command Line Interface
Notes 7.9.1 Linux/MacOS vs. Windows
Video 7.9.2 Command Line Interface
Check for Understanding 7.9.3 Command Line Interface Quiz
Resource 7.9.4 Command Equivalents
Video 7.9.5 Windows Command Prompt
Free Response 7.9.6 Windows Command Prompt
Free Response 7.9.7 Directory Directions
Connection 7.9.8 Neural Interface?
Free Response 7.9.9 Neural Interface?
7.10 System Administration Quiz
Survey 7.10.1 Mindsets
Unit Quiz 7.10.2 System Administration Quiz
8. Software Security
8.1 Inside Web Apps
Video 8.1.1 Inside Web Apps
Check for Understanding 8.1.2 Inside Web Apps
Free Response 8.1.3 Using View Page Source
Example 8.1.4 Recreate a Webpage?
Connection 8.1.5 Getting Started with OWASP
Free Response 8.1.6 Getting Started with OWASP
8.2 Developer Tools
Video 8.2.1 Developer Tools
Check for Understanding 8.2.2 Developer Tools
Free Response 8.2.3 Using the Developer Tools
Exercise 8.2.4 Console Secrets
Example 8.2.5 Local Storage
Connection 8.2.6 The Top Cybersecurity Blogs and Websites
Free Response 8.2.7 Selecting a Site to Follow
8.3 The Value of Data
Video 8.3.1 The Value of Data
Check for Understanding 8.3.2 The Value of Data Quiz
Notes 8.3.3 Exploring Data Visualizations
Connection 8.3.4 US Recorded Music Revenue
Connection 8.3.5 National Parks
Connection 8.3.6 March Madness
Connection 8.3.7 Captain Marvel
Free Response 8.3.8 Respond: Visualizations
Free Response 8.3.9 Free Response: Choosing a Visualization
Free Response 8.3.10 Reflection: Design a Survey
8.4 Databases
Video 8.4.1 Databases
Check for Understanding 8.4.2 Databases
Connection 8.4.3 Database Administrator Career
Free Response 8.4.4 Database Administrator Career
Video 8.4.5 Parts of a Database
Check for Understanding 8.4.6 Parts of a Database
Connection 8.4.7 SQL Database Diagram
Free Response 8.4.8 SQL Database Diagram
Free Response 8.4.9 Schema Brainstorm
8.5 Clients and Servers
Video 8.5.1 Clients and Servers
Check for Understanding 8.5.2 Clients and Servers
Connection 8.5.3 Inside a Google Data Center
Free Response 8.5.4 Inside a Google Data Center
Connection 8.5.5 Cloud Vulnerabilities
Free Response 8.5.6 Cloud Vulnerabilities Response
Video 8.5.7 Client-Server Model
Check for Understanding 8.5.8 Client-Server Model
Connection 8.5.9 The Future of User Privacy
Free Response 8.5.10 The Future of User Privacy
8.6 What is SQL?
Notes 8.6.1 What is SQL Overview
Video 8.6.2 Intro to SQL
Check for Understanding 8.6.3 Quiz: What is SQL?
Video 8.6.4 How to Structure Data in SQL
Check for Understanding 8.6.5 How to Structure Data in SQL
Example 8.6.6 SQL Tables
Free Response 8.6.7 SQL Tables Response
8.7 Basic Querying in SQL
Video 8.7.1 The SELECT Statement
Check for Understanding 8.7.2 Basic Querying in SQL
Example 8.7.3 Our First SELECT Statement
Exercise 8.7.4 Your First SELECT Statement
Video 8.7.5 More SELECT Statement
Check for Understanding 8.7.6 More SELECT Statement
Example 8.7.7 Selecting Specific Columns
Exercise 8.7.8 Harry Potter Names
8.8 Filtering Queries in SQL
Video 8.8.1 The WHERE Clause
Check for Understanding 8.8.2 Condition Operators
Example 8.8.3 Ravenclaw House
Example 8.8.4 People in Gryffindor
Example 8.8.5 Filter By ID
Exercise 8.8.6 The Weasleys
Exercise 8.8.7 The Potters
8.9 Common Security Problems
Video 8.9.1 Common Security Problems
Check for Understanding 8.9.2 Common Security Problems
Connection 8.9.3 Meet Security Engineers at Google
Free Response 8.9.4 Security Engineering Reflection
Video 8.9.5 Living in a Digital World
Free Response 8.9.6 Living in a Digital World
8.10 SQL Injection Overview
Video 8.10.1 SQL Injection Overview
Check for Understanding 8.10.2 SQL Injection Overview
Connection 8.10.3 Equifax Security Breach
Connection 8.10.4 Equifax Exposed Millions
Free Response 8.10.5 Equifax SQL Injection Attack
Example 8.10.6 SQLi
8.11 Types of SQLi and Prevention
Video 8.11.1 Types of SQLi
Check for Understanding 8.11.2 Types of SQLi
Video 8.11.3 Preventing SQLi
Check for Understanding 8.11.4 Preventing SQLi
Connection 8.11.5 Mitigating SQL Injection
Free Response 8.11.6 Reflection: Mitigating SQL Injection
Connection 8.11.7 SQL Injection
8.12 Software Security Quiz
Unit Quiz 8.12.1 Software Security Quiz
9. Project: Security Assessment Report
9.1 Project: Security Assessment Report
Notes 9.1.1 Project Requirements
Connection 9.1.2 Supercar Showdown Website
Free Response 9.1.3 SQL Injection Testing
Resource 9.1.4 SQLi Testing Handout
Free Response 9.1.5 Security Assessment Report
Free Response 9.1.6 Project Reflection
10. Networking Fundamentals
10.1 Introduction to the Internet
Video 10.1.1 Welcome to the Internet
Check for Understanding 10.1.2 Intro to the Internet
Connection 10.1.3 Inside Facebook's Connectivity Lab
Free Response 10.1.4 Connectivity Lab Reflection
10.2 Notational Systems
Video 10.2.1 Number Systems
Check for Understanding 10.2.2 Number Systems Quiz
Notes 10.2.3 Number Base Tool
Video 10.2.4 Decimal to Binary
Check for Understanding 10.2.5 Decimal to Binary Quiz
Exercise 10.2.6 Binary Game
10.3 Data Representation
Video 10.3.1 Hexadecimal
Check for Understanding 10.3.2 Hexadecimal Quiz
Exercise 10.3.3 Binary to Hex Game
Video 10.3.4 Encoding Text with Binary
Check for Understanding 10.3.5 Encoding Text with Binary Quiz
Example 10.3.6 Custom Encoding
Example 10.3.7 Bits to ASCII
Exercise 10.3.8 Hello World in Bits
10.4 Internet Hardware and Sending Information
Video 10.4.1 Internet Hardware
Check for Understanding 10.4.2 Internet Hardware
Video 10.4.3 Sending Information
Check for Understanding 10.4.4 Sending Information
Connection 10.4.5 The Internet is in the Ocean
Free Response 10.4.6 Internet in the Ocean Reflection
10.5 Internet Addresses
Video 10.5.1 Internet Addresses
Check for Understanding 10.5.2 Internet Addresses
Free Response 10.5.3 The Need for Addresses
Connection 10.5.4 IPv4 vs. IPv6
Free Response 10.5.5 Reflection: IPv4 vs IPv6
10.6 Domain Name System (DNS)
Video 10.6.1 Domain Name System (DNS)
Check for Understanding 10.6.2 Domain Name System
Connection 10.6.3 How Does DNS Work?
Free Response 10.6.4 How Does DNS Work?
10.7 Routing
Video 10.7.1 Routing
Check for Understanding 10.7.2 Routing
Free Response 10.7.3 Redundancy
10.8 Packets & Protocols
Video 10.8.1 Packets
Check for Understanding 10.8.2 Packets
Video 10.8.3 Protocols
Check for Understanding 10.8.4 Protocols
Connection 10.8.5 How the Internet Works
Free Response 10.8.6 The Journey of an Image
10.9 Viewing a Webpage
Video 10.9.1 Viewing a Webpage
Check for Understanding 10.9.2 Viewing a Webpage
Free Response 10.9.3 Explaining a URL
Connection 10.9.4 Net Neutrality Explained
Connection 10.9.5 FCCs Net Neutrality Rules Officially Repealed
Free Response 10.9.6 Take a Side on Net Neutrality
Connection 10.9.7 Net Neutrality and Cybersecurity
Free Response 10.9.8 Net Neutrality and Cybersecurity Research
10.10 Impact of the Internet
Video 10.10.1 Impact of the Internet
Check for Understanding 10.10.2 Impact of the Internet
Connection 10.10.3 What is the Digital Divide?
Free Response 10.10.4 What is the Digital Divide?
10.11 Networking Fundamentals Quiz
Survey 10.11.1 Mindsets
Unit Quiz 10.11.2 Networking Fundamentals Quiz
11. IT Infrastructure
11.1 Internal Components
Video 11.1.1 Internal Components
Check for Understanding 11.1.2 Internal Components
Connection 11.1.3 Build a Computer
Free Response 11.1.4 Build a Computer
Example 11.1.5 Test Your Brain's RAM!
Free Response 11.1.6 Test Your Brain's RAM!
Connection 11.1.7 The Machine Instruction Cycle
11.2 Peripheral Devices
Video 11.2.1 Peripheral Devices
Check for Understanding 11.2.2 Peripheral Devices
Free Response 11.2.3 Personalized Peripherals
Free Response 11.2.4 IT Help
Free Response 11.2.5 Your Ideal Computer Setup
11.3 Network Devices
Video 11.3.1 Network Devices
Check for Understanding 11.3.2 Network Devices
Connection 11.3.3 Speed Test
Free Response 11.3.4 Speed Test
Connection 11.3.5 Fiber Optics Bend Light!
Free Response 11.3.6 Fiber Optics Bend Light!
Connection 11.3.7 Ethernet Standards
Free Response 11.3.8 Ethernet Standards
Free Response 11.3.9 Network Troubleshooting
11.4 Storage Options
Video 11.4.1 Storage Options
Check for Understanding 11.4.2 Storage Options Quiz
Connection 11.4.3 Security of Cloud Storage
Free Response 11.4.4 Security of Cloud Storage
Free Response 11.4.5 Storage Suggestions
11.5 Network Options
Video 11.5.1 Network Options
Check for Understanding 11.5.2 Network Options Quiz
Connection 11.5.3 What is an SSID?
Free Response 11.5.4 What is an SSID?
Connection 11.5.5 Wireless Threats
Free Response 11.5.6 Wireless Threats
Free Response 11.5.7 Wireless Network Setup
11.6 Network Communication
Video 11.6.1 Network Communication
Check for Understanding 11.6.2 Network Communication Quiz
Example 11.6.3 Setting up a Firewall
Free Response 11.6.4 iptables
Notes 11.6.5 iptables simulation
11.7 Network Management
Notes 11.7.1 Linux/MacOS vs. Windows
Video 11.7.2 Network Management
Check for Understanding 11.7.3 Network Management Quiz
Example 11.7.4 MacOS Terminal Simulation
Example 11.7.5 Windows Command Prompt Simulation
Video 11.7.6 Windows Command Prompt Spy
Free Response 11.7.7 Windows Command Prompt Spy
Notes 11.7.8 SSH Logs
Example 11.7.9 SSH Logs
Free Response 11.7.10 Reading Logs
11.8 IT Infrastructure Quiz
Unit Quiz 11.8.1 IT Infrastructure Quiz
12. Project: Troubleshooting
12.1 Methodology
Notes 12.1.1 Troubleshooting Methodology
Free Response 12.1.2 Identify the Problem
Free Response 12.1.3 Research Solutions
Free Response 12.1.4 Establish a Theory
Free Response 12.1.5 Test the Theory
Free Response 12.1.6 Fix the Problem!
12.2 Support Practice
Exercise 12.2.1 Signal Strength
Exercise 12.2.2 Interference
13. Final Exam
13.1 Final Exam
Final 13.1.1 Final Exam
Free Response 13.1.2 Fill in the Blank
Free Response 13.1.3 Short Answer - 1
Free Response 13.1.4 Short Answer - 2
Free Response 13.1.5 Short Answer - 3
Free Response 13.1.6 Short Answer - 4
14. What's Next?
14.1 After Fundamentals of Cybersecurity
Notes 14.1.1 Cybersecurity Pathways
Connection 14.1.2 CodeHS Advanced Cybersecurity
Notes 14.1.3 College Pathway
Connection 14.1.4 Certification Pathway
Connection 14.1.5 Career Spotlight
Free Response 14.1.6 My Pathway