If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Unit: Online data security

0

Possible mastery points

Introduction to online data security

Learn
Why care about data security?
(Opens a modal)

PII (Personally identifiable information)

Learn
PII (Personally identifiable information)
(Opens a modal)
Practice
PII (Personally identifiable information)Get 3 of 4 questions to level up!

User data tracking

Learn
Web cookies
(Opens a modal)
Search history
(Opens a modal)
Browsing history
(Opens a modal)
Geolocation
(Opens a modal)
Practice
User historyGet 3 of 4 questions to level up!
GeolocationGet 3 of 4 questions to level up!

Quiz 1

Level up on the above skills and collect up to 300 Mastery points

Cyber attacks

Learn
Phishing attacks
(Opens a modal)
Rogue access points
(Opens a modal)
Computer malware
(Opens a modal)
Practice
Phishing attacksGet 3 of 4 questions to level up!
Rogue access pointsGet 3 of 4 questions to level up!
Computer malwareGet 3 of 4 questions to level up!

Quiz 2

Level up on the above skills and collect up to 300 Mastery points

Data encryption techniques

Learn
The need for encryption
(Opens a modal)
Encryption, decryption, and cracking
(Opens a modal)
Symmetric encryption techniques
(Opens a modal)
Public key encryption
(Opens a modal)
Practice
Symmetric encryptionGet 3 of 4 questions to level up!
Public key encryptionGet 3 of 4 questions to level up!
Data encryption techniquesGet 3 of 4 questions to level up!

Secure Internet protocols

Learn
Transport Layer Security (TLS)
(Opens a modal)
Digital certificates
(Opens a modal)
HTTP Secure (HTTPS)
(Opens a modal)
Practice
Digital certificatesGet 3 of 4 questions to level up!
HTTP Secure (HTTPS)Get 3 of 4 questions to level up!

User authentication methods

Learn
Strong passwords
(Opens a modal)
Multi-factor authentication
(Opens a modal)
Practice
User authentication methodsGet 3 of 4 questions to level up!

Quiz 3

Level up on the above skills and collect up to 600 Mastery points
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 1200 Mastery points!

About this unit

This unit introduces the concept of PII and the ways in which PII and other data can be tracked online (cookies, search history, browsing history, geolocation). Learn how attackers can gain access to data and devices with phishing, rogue access points, and malware, and see how you can protect yourself with encryption, secure protocols, strong passwords, and multifactor authentication.