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DECRYPT MESSAGE Century #Critical Thinking
Skills

A secret agent is on a top-secret mission. A partner has sent an encrypted message containing critical
instructions. To complete the mission safely, the message must be decoded.
To read the message, shift each letter three places backward. Spaces remain unchanged.
Decrypt this message to reveal the instructions:
L DP JRLQJ WR GHOKL IRU LQYHVWLJDWLRQ

How WhatsApp Uses Encryption?

When we send a message like “Hi, how are you?” on WhatsApp, it does not travel openly across
the Internet. Instead:

WhatsApp encrypts the message, turning it into a secret coded form.
Even if someone tries to intercept the message, they will only see random letters and numbers.

Only friend’s phone has the unique key that can unlock the code and read the actual message.

This is why WhatsApp displays the message “Messages are end-to-end encrypted.”
It means the chat is protected and can only be read by the sender and the person being messaged.

Hello Hello Hello

PLAIN TEXT ENCRYPTION SECURE CHANNEL DECRYPTION

quick

Fill in the blanks.

1. Personal data is any information that relates to an .
2. save passwords, cookies, browsing history, and autofill details.
3. platforms allow choosing who can see profiles, posts, and personal information.

TIPS TO PROTECT PERSONAL DATA

In today’s digital world, personal data is constantly being collected, stored, and shared across
different apps and websites. This information includes details like name, phone number, email,
location, and even online activities. If not protected properly, it can be misused for scams, identity
theft, financial fraud, or privacy invasion.

70 Computer Science - VIII