Protecting data lesson 4

• Computing
• Lower Secondary (Key Stage 3)

Protecting data

Crack the codes

Extention: Create your own message.

Do now answers. 

Code 1 – Fcjjm = Hello There

Code 2 - Ucjj bmlc = Well done

Lesson 4:  protecting our data

Conquer: Identify the need for encryption to protect our data

Aspire: Solve encryption puzzles using a key

Data and information 

We give out pieces of data and information every single day,

We give it to social media, to business and websites, we give it to the government and the NHS. 

But we still need to make sure we protect this information. 

What kinds of information do we need to protect?

Private information 

There are many kinds of information we want to keep private.

• Banking details
  
• Passwords
  
• Text messages – or any app messages like whatsapp
  
• Browsing habits
  
• Emails
  
• Records about yourself – medical/student
  

How do we protect it?

Keyword: Encryption

Encryption is the changing of information so that it can no longer be easily understood

What is encryption?

1. Changing information so it cant be read
2. Locking information behind a password
3. A way of preventing a virus.
4. A way of hacking a website.

Which of these is not data we don't need to protect?

1. Bank details
2. Passwords
3. Text messages
4. First name

What is information?

1. Data with meaning
2. Information without meaning.
3. A set of numbers
4. Of set of information

Crack the code

Today you will work in pairs to create coded messages. 

You will each create a question that the other will answer in code.

These will then have to be decrypted by your partner.

Code

My suggestion would be to print these off for students to complete on papers, However if you are fine with students switching seats computers are fine. 

Extension tasks

Become a master codebreaker

Code breaker