Keeping data safe and secure

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Mind Map by dfxx bvcbvvvvv, updated more than 1 year ago
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Created by dfxx bvcbvvvvv about 5 years ago


Mind Map on Keeping data safe and secure, created by dfxx bvcbvvvvv on 02/05/2015.

Resource summary

Keeping data safe and secure
1 Backups-copies of the original data to restore it incase the originals are lost or damaged.They should be done reguarly and placed away from the off-site (away from the originals location)
1.1 E.g. used by banks who have many transactions during the day or hospital swho have important records about patients
1.2 Storage media for making backups
1.2.1 Removable Hard Disk- 500GB (portable and internal) Pros- portable, cheap, durable, large storage capacity, non volatile, supports how your computer works Cons: moving parts so it can break, slow, regular crashes can occur Magnetic tape backup- 20GB Pros- portable, can store large amounts of data, can be set up to do the backing up overnight Cons: you need special equipment to use it, slow, has a limited life span, can be expensive CDs (CD-R & CD-RW)- 660 MB Pros: small and fast, portable, cheap, most computers can read the CDs, easy to use Cons: can scratch easily, fragile, takes more time to load than hard disk DVDs- ( DVD-R & DVD-RW)- 4.7MB Pros- large storage capacity, good sound quality, good picture quality, portable Cons: can scratch easily, they do not work in CD's, there is no single standard DVD Flash Memory Stick- 8GB Pros: portable, rewritable, can be used in most computers, cheap, easy to use, durable because it has no moving parts Cons: small so can be lost easily, it has a limited life span Network Storage- more or one hard disks Pros: files can be easily shared between users, the data is easy to backup as all data is stored on the file server, security is good Cons: purchasing it can be expensive, managing a large network is complicated, viruses could spread throughout the network, there is a danger of hacking occurring in the network to, security procedures like firewall should be use. Online Storage- 5 to 50MB Pros: online so you don't have to worry about loosing a physical item, easy to use, most cases is secure, cheap to use Cons: hackers could invade your account you have to have an internet connection to use it, viruses could occur on the web browser. Floppy disk- 1.44MB Pros: cheap, re-usable Cons: small storage space, slow data transfer, not everyone has floppy disk readers now,easily lost.
1.3 The options for backup and archiving are dependent upon the following factors:
1.3.1 Content and type What data needs to be backed up?
1.3.2 Frequency How often should the backup take place ?
1.3.3 Timing The best time to back up.
1.3.4 Backup Media What the data will be backed up onto
1.3.5 Location Where will the data be stored?
2 Archive- the storage/moving of files that are no longer in current use but are kept for future reference. It is done to free up space and speed up access time on the hard drive.
2.1 Legal documents are archived e.g. when a pupil leaves school their work may not be in use but it has to be legally archived for a certain amount of years.
3 Virus- A program designed to cause damage to a computer system. It is a computer program that replicates and spreads itself and is mainly from attachments or downloads,
3.1 Worm virus- a program that makes copies of itself to cause damage to the computer.
3.1.1 Trojan horse- describes itself as another useful program so it can get past the security system in order to cause damage to the computer system.
4 Malware-software that has been created with an ill intent, such as viruses keylogging or spyware
5 Hacking-the practice of breaking into a secure computer system to cause damage.They invade privacy and can damage data.
6 Unathourised user- someone who has not been given permission to access certain files
7 Causes of data loss
7.1 Physical
7.1.1 Theft of computer Scratches on hard disk Fire,flood,lightening
7.2 People
7.2.1 Data theft Carelessness User errors Data damage
7.3 Malicious
7.3.1 Hackers Viruses Unauthorised access
7.4 Power loss
7.5 Corrupt files/program crashes
8 Security methods
8.1 Physical security- using physical methods of security like CCTV,guards,locks,and biometrics to keep out unauthorised access
8.1.1 CCTV- Closed Circuit Television- video surveillance using cameras, microphones and other recording devices to monitor people and places. The device(s) capture footage and send it back to the CCTV system. Mainly used for security purposes e.g. in banks, retail areas,government institutions and highways/streets. Locks- used to keep places/unopenable without a key. Mainly used for safes,doors,windows and cabinets. Helps prevent unauthorised access to many places so these intruders do not e.g. steal any computers containing important data on them. Guards- physical people used to watch over or control areas to protect people or places. They can log visits of potential intruders and mainly found outside businesses where data is kept, on high streets or areas with high valued goods. Biometrics- reader or scanner device used for security e.g. fingerprint scanners or eye scanners to identify a person. It converts scanned information into digital form and compares it to match data already stored in a database for this comparison.
8.2 Software methods- used to prevent unauthorised access to computer systems and online accounts.
8.2.1 Encryption- When data is scrambled to make it unreadable when transmitted from one device to another , only the receiver has the decryption key. It is a useful way to help protect private data from hackers or other people who are trying to intercept into the internet or e.g. email. It can be used by companies or normal people who are sending private information to places such as banks.
8.2.2 User name- to identify the user and allocate the correct access rights and documents for that user. Password- used to verify the username and used for security purposes. A strong password should be used that contains non-dictionary words, numbers and upper and lower case letters. Selective drop-down menus are sometimes used as a security method to add letters to a password rather than typing them. This prevents key-logging software from viewing the systems and gaining access to important passwords. Transition logs- MONITORING METHOD NOT PREVENTION, used to track the actions of a computer user, keep records of a user,the action and the date and time so if a record or file is accessed it will provide evidence of who has accessed it and what has been done with it. Firewall- prevent unathourised requests from hackers to gain access to the network or computer systems via the internet. Anti-virus software- designed to detect and destroy computer viruses which could damage data. IDS- Intrusion detection system, detects an attack on a network or computer system. Anti-spyware software- a program designed to detect unwanted spyware program installations and to remove those programs if installed e.g. put in a quarantine.
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