Security and Ethics

Security and Ethics

1. Security

   • Definition
     • Keeping Data Safe.
   • Security Risks
     • Hacking
       • The act of gaining illegal access to a computer system.
         • Prevention methods
           • Firewalls
           • Strong passwords and ids
           • Use of anti-hacking software
     • Viruses
       • Program or program code that can replicate itself with intention of deleting or corrupting files or malfunction.
       • Prevention methods
         • Install Anti-virus software
         • Don't use software from unknown sources
     • Pharming
       • Malicious code installed on a user's hard drive or on the web server; the code will direct the user to a fake website without their knowledge
       • Prevention methods
         • Install anti-spyware software
         • User should always be alert
   • Cookies
     • A packet of information sent by a web server to a web browser; generated each time a user visits a website
   • Loss of data and data corruption
     • Prevention
       • Use of back-ups
     • Accidental
     • Hardware fault
     • Software fault
     • Incorrect computer operation
   • Protocols
     • A set of rules used by computers to communicate
     • Secure Sockets layer (SSL)
       • is a type of protocol . This always data to be sent and received securely over the internet
     • Transport layer security (TLS)
       • is similar to SSL but is a more recent security system. provide encryption, authentication and data integrity.

2. Computer Ethics

   • Defintion
     • is a set of principles set out to regulate the use of computers
   • Authentication
     • is used to verify that data comes from a trusted source.
   • Denial of service attacks (DoS)
     • is an attempt at preventing users from accessing a part of network, notably an internet server
     • Prevention methods
       • using an up-to-date virus checker
       • Setting up a firewall
   • Encryption
     • symmetric
       • is a secret key which can be added to a combination of characters; if this key is applied to a message, it's content becomes unreadable unless decryption key is used
     • Asymmetric
       • is a more secure method for cryptography, it uses private and public keys to encrypt and decrypt data
   • Types of Software
     • Free Software
       • Run the software
       • Study/modify the source code
     • Freeware
       • Only run the software
     • Shareware
       • Try out software free of charge for a trial period; once it's over author will request fee payment to use the software

3. Made by: Mohamed Moaz Alchayah, Saad Naseer, Zaid Osama. Grade: 10-C