Computer security

Computer security

1. SECURITY ON THE COMPUTER

   • MALWARE malicious purpose
     • TYPES
       • WORM
         • Is a malware whose purpose is to flood the system memory by reproducing itself.
       • VIRUS
         • Is a program that installs itself on the computer without the user's consent with the aim of causing harm.
       • KEYLOGGER
         • A type of software that attempts to obtain and memorise keystrokes.
       • SPYWARE
         • Trojans,adware and hijackers.
   • More terminology
     • Hackers
       • Are looking for an intellectual challenge. They do not necessarily cause harm.
     • Crackers
       • Are people who rry and change how a commercial program works
     • Cookies
     • Pharming
     • Hoaxes
     • Spam or junk mail
   • Computer security
     • Antivirus
       • A program that analyses the different units and devices
     • Firewall
       • Is a defence system that controls and filters network traffic
     • Proxy
       • Function as an entry port
     • Passwords
       • Can help to protect the security of a file
     • Cryptography
       • Is the encrypting of information used to protect files

2. PERSONAL SAFETY

   • Threats to people or their identity
     • Unintended access
       • To illegal or harmful information
     • Identity theft
       • robbery or fraud
     • Loss or harm
       • To our identity or image
     • Cyberbulling
       • is a type of harassment
   • Software for personal protection
     • Parental control
       • They can limit searches, permit or block websites
       • Types
         • KidsWatch
         • K9 Web

3. DIGITAL IDENTITY

   • Digital certificate
     • Is a digital document that contains electronically validated personal identification data
   • Electronic signature
     • Is a type of digital certificate that has the same validity as a written signature

4. TYPES

   • Active
     • To refer to the set of actions aimed at protecting the computer and its content.
   • Passive
     • Aims to minimise the impact of possible computer damage

5. OWNERSHIP AND DISTRIBUTION OF SOFTWARE AND INFORMATION

   • Software licences
     • comercial software
       • A companyś software sold for profit
     • Freeware
       • Software with no monetary cost
     • Free software
       • This can be freely used
     • Copyleft
       • User licence that accompanies free software so it can be modified or redistributed
     • GNU/GPL
       • A licence that accompanies packages distributed by the GNU project.
   • File exchanges:P2P networks
     • Is one of the most widespread ways of obtaining software online