methods of protection

methods of protection

1. Hardware measure

   • lock computer installion; operated by a conventional key, swipe card or code number via keypad
     • staff should not lend keys or swipe cards
   • locks activated by voice recognition or finger prints
   • IBMs think pad is equipted with a finger print reader locate below the arrow keys that verifies the identity of a user when he swipes a finger across a sensor
   • additionally: computer keyboard locks, closed circuit television cameras, security staff a alarm systems
     • passive infered alarm systems to detect body heat an movement; inexpensive and reliable

2. Software measures

   • identification of users; all users must be able to be recognised. allocated a unique user identification code and secret password
     • network software can be:
       • only allow passwords between 6 and 12 characters
         • not allow dictionary words or names as passwords
           • only allow passwords with numbers and letters
             • change passwords frequently
               • deny access after 3x password fail
   • network log can be kept, name, workstation, time logged in and out, which programs use and files created
     • levels of permitted acess
       • not all users not to access all files on network system
         • READ ONLY; not be altered or deleted
           • READ/WRITE: can modify
             • APPEND ACCESS: add new records
               • DELETE ACCESS: remove
                 • NO ACCESS

3. Virus protection: prevention, detection and repair

   • anti virus software; sophos and kaspersky can detect a virus on a system and destroy it
     • free virus software; AVG is widely installed by home users for free

4. sypware protection:

   • anit spyware packages; microsoft defender
     • provide continual protection against, scans all data coming into the a pc from internet and block anything it detects
       • can be used to detect software can be used to detect and remove any spyware who are ready installed

5. Encryption

   • secretly coding data that someone encrypts, methods are regularly used to protect important and confidential info when it stored or being transmitted from one device to another
     • translation table; each character is replaced by a character on a tablr
       • or two or more tables

6. Firewalls

   • prevent authorised access to a pc system
   • can operate in two or more ways. harware firewall between a local area network file server and external network
     • firewall machine has built in security precautions preventing someone from the outside accessing data without permission
       • intercepts any attempt to access

7. Biometrics

   • techniques to convert a unique human characteristic such as fingerprint or an iris scan into a digital form that can be stored on PC
   • Bio metric data can store shape of a face, hand, palm print thumb or voice
     • biometric data for passport identification or identity cards
   • for physical security: open a door or to access pc systems