SECURITY MEASURE

                                           SECURITY MEASURE 

Definition of security measures:

  ➤The precautionary measures taken toward possible danger or damage.

                                                                      DATA BACKUP 

➼A data backup is the result of copying or archiving files and folders for the

    purpose of being able to restore them in case of data loss.

➼Data loss can be caused by many things ranging from computer viruses,

    hardware failures, file corruption, system failure or theft. 

                

                                                                    CRYPTOGRAPHY

How…????

         ➱To read the data, you must decrypt it into readable form.

         ➱The unencrypted data is called plain text.

         ➱The encrypted data is called cipher text.

         ➱To encrypt, plain text converted into cipher text using an encryption key.

Importance…

        ➱The process of proving one's identity. 

        ➱Ensuring that no one can read the message except the intended receiver. 

      ➱Assuring the receiver that the received message has not been altered in anyway from the original. 

       ➱A mechanism to prove that the sender really sent this message. 

                                                                 

                                                                    ANTI-VIRUS

⤀Anti-virus software is a program or set of programs that are designed to prevent, search for, detect

and remove software viruses and other malicious software like worms, Trojan horses, adware and

more.

⤀If and when a virus is detected, the computer displays a warning asking what action should be

   done, often giving the options to remove, ignore, or move the file to the vault.

⤀If a virus infected a computer without an antivirus program, it may delete files, prevent access to

   files, send spam, spy on you, or perform other malicious actions.

⤀Examples: Norton anti-virus, AVG anti-virus, Kaspersky anti-virus

⤀There are several different companies that build and offer anti-virus software and what each offers can vary but all perform some basic functions:

              - Scan specific files or directories for any malware or known malicious patterns

              - Allow you to schedule scans to automatically run for you

             - Allow you to initiate a scan of a specific file or of your computer, or of a CD or flash drive   at any time.

          - Remove any malicious code detected –sometimes you will be notified of an infection and asked if you want to clean the file, other programs will automatically do this behind the scenes.

                                                                     ANTI - SPYWARE 

⟶Spyware is a type of malware that is installed on a computer without the user's knowledge in order

    to collect information about them. 

⟶Once installed, spyware can degrades system performance by taking up processing power,

     installing additional software, or redirecting users' browser activity.

⟶It also can monitors user activity on the Internet and transmits that information in the background

    to someone else.

⟶Spyware can also gather information about email addresses and even passwords and credit card

     numbers.

⟶Anti-spyware is a type of software that is designed to detect and remove unwanted spyware

    programs. 

⟶Anti-spyware software can be used to find and remove spyware that has already been installed on

    the user's computer. 

⟶OR it can act much like an anti-virus program by providing real-time protection and preventing

    spyware from being downloaded in the first place.

⟶Examples :

          Spyware Blaster

          Spy Sweeper

                                                                          FIREWALL 

➺A firewall is a system designed to prevent unauthorized access to or from a private network. 

➺A firewall can be implement either through hardware or software form, or a combination of both. 

➺Firewalls prevent unauthorized Internet users from accessing private networks connected to the

   Internet, especially intranets. 

➺All messages entering or leaving the intranet (i.e., the local network to which you are connected)

    must pass through the firewall, which examines each message and blocks those that do not meet

   the specified rules/security criteria.

➺Rules will decide who can connect to the internet, what kind of connections can be made, which or

    what kind of files can be transmitted in out.

                                                       PHYSICAL ACCESS CONTROL 

➺Lock your laptop whether you're at home, in a dorm, in an office, or sitting in a coffee shop, use a security device, such as a laptop security cable.

➺Lock doors and windows, usually adequate to protect the equipment.

➺Put the access code at the door to enter the computer room or your office.

➺Put the CCTV (closed-circuit television) in your office or computer room.

➺Make a policies who can access the computer room or your data center.