Why don't we use encryption all the time?

HOMEWORK

There are three problems relating to browsing, digital certificate keys and Payment Gateway issue. Explain what these problems are and give examples.

Encryption

Methods to protect data

Encryption means to scramble data in such a way that only someone with the secret code / key can read it.

IS IT NEW? Encryption has been around for thousands of years in various forms. For example in Ancient Greece the story goes that a general wanted to send a secret message back to his city, so he had a soldier's head shaven and the message written on his scalp. Soon enough his hair grew back enough to hide the message and was sent off running to the city. When the soldier arrived, the city official knew the secret 'key' i.e. shave his head to reveal the message.

Today, encryption is far more sophisticated, but it serves the same purpose - to pass a secret message from one place to another without anyone else being able to read it.





Research examples of how encryption is used.

Consequences of data loss

HOMEWORK

Data is often the most valuable resource any business has. The cost of creating data again from scratch can far outweigh the cost of any hardware or programs lost.

Loss of data from hacking can have various consequences, WHAT ARE THEY?

Security in ICT

What are the main threats regarding ICT security?