Computer Security

Computer Security

1. Encryption

   • Encryption helps you send data to people without people invading your private information.
   • You can encrypt a message by using a cypher and stopping people from invading your message.
   • Decryption is where you use a key to solve the encryption.
   • Consequences
     • If there is no https there is a chance that it is a fake website and isn't trust worthy.
     • Always check if a website that you can buy things in (.eg. amazon) to see if it has a https beforeyou enter your bank details or you could be giving your details away to random people.
   • A key is something that helps you decrypt data.
   • A cipher is how you encrypt your data.
   • Encryption is when you put data into a code / use a cipher.
   • Encryption is when you scramble data so you don't get hacked or have your data stolen.

2. Firewall

   • Protects computers from intruders.
   • Makes sure that data packets are safe to send.
   • Controls which programs can send receive data packets.
   • Should be used on email attachments and downloads.
   • Used when a program is trying to connect to another network.
   • Prevents harmful data from entering your computer.
   • Data Packets are packets of binary code to send messages or other data to other computers or devices.
     • This is an example of Binary code : 01001001 01100110 00100000 01111001 01101111 01110101 00100000 01100001 01110010 01100101 00100000 01110010 01100101 01100001 01100100 01101001 01101110 01100111 00100000 01110100 01101000 01101001 01110011 00100000 01110100 01101000 01100101 01101110 00100000 01111001 01101111 01110101 00100000 01100001 01110010 01100101 00100000 01110000 01110010 01101111 01100010 01100001 01100010 01101100 01111001 00100000 01110100 01101111 01101111 00100000 01100111 01100101 01100101 01101011 01111001 00101110

3. Anti-Virus

   • Anti-Virus scans your computer for malicious software.
   • Anti-Virus neeeds to be updated regularly and periodically to detect Malware.
   • Periodically means that you scan your computer every day/every week to keep your computer secure.
   • Malware means MALicious softWARE.
   • You need to install Anti-Virus for your computer to be as secure as possible.

4. Passwords

   • You need a secure password otherwise you will have your personal data at risk.
   • Use symbols, upper case letters and lower case letters.
   • You need 8 characters in a password for it to be secure.

5. Computer Security

   • Phishing is when someone tries to get information like passwords and credit card details .etc. from emails sent from untrustworthy email adresses.
   • Malware
     • There are a lot of different types of Malware such as Viruses, Worms, Trojan, Zombies .etc.
   • You always need to check the URL of when you login to something or put in your bank details.
   • Fraud is a big concern online because of the danger of not checking the trustworthiness. Not checking the trustworthiness is dangerous and can lead to money being stolen and usernames being hijacked.

6. Botnet is a network of private computers infected with malware and controlled as a group without the owner's knowledge.