Computer Security

Computer Security

1. Decryption

   • To decrypt message you need the key
   • Decryption is like breaking a code
   • This could be used to describe something like method of un-encrypting the data manually or with using the appropriate keys or codes

2. Encryption

   • To encrypt message you need cipher and key
   • Encrypting mean meaking code
   • Cipher is a process of scrambling the data
   • Key is needed to understand what encrypted message mean

3. Firewall

   • Firewall control which programs can send all receive data packets
   • Used to help protect a computer network from intruders
   • Used when program is trying to connect o another network
   • Used to help protect a computer from network industries

4. Antivirus

   • It prevents harmful data entering your computer
   • Needs updating regularly to make sure that it knows he latest threats
   • Scans the computer periodically (regular at the same time)
   • Quarantine (isolate) any programs or files which are harmful

5. Passwords

   • When you are creating password it need to be secure for example when is password to bank account
   • Good and secure password should include capital letters, numbers, symbols and to create good password don't use words easy to guess and don't use your name

6. Malware

   • Worm-duplicate
   • Trojan horse-add unwanted virus
   • Zombie virus-controls all computers

7. Secure

   • Secure website should include https:// in the link, that is most important when you are on bank website and on websites where you give your personal data details
   • Phishing is stealing someone's personal data and passwords to bank accounts or credit cards