Security

Security

1. Password

   • An example of a secure Password is: cA53y.LD
   • A password must have special characters and symbols
   • A password needs to be a mixture of upper and lower case letters including numbers

2. Encryption

   • To encrypt you need a key
   • Encryption means to change electronic information or signals into a secret code
   • a cipher is a way of writing a code that is hard to crack unless you have a key
   • to decipher you need a key
     • The key is called a cipher
   • cryptography means that art of solving a code
   • Caesar shift cipher is a simple cipher which moves letters to the left or right by a specific amount of spaces
   • steganography means the hiding of a secret message within an ordinary message and the extraction of it at its destination
   • morse code is a digital signal transmitted by light,radio waves and electronic pulses. letters and numbers are represented by dots and dashes. A dash lasts three times longer than a dot

3. Anti Virus

   • A software designed to destroy viruses

4. Firewall

   • proxy firewall is a network security system that protects network resources
     • Packet filtering is a firewall technique used to control network access by monitoring outgoing and incoming packets and allowing them to pass or halt based on the source and destination Internet Protocol (IP) addresses, protocols and ports.
   • An application firewall is a form of firewall that controls input, output, or access from, to, or by an application or service
   • In computing, a stateful firewall is a network firewall that tracks the operating state and characteristics of network connections traversing it.