Metods of Wiping data
veeru9999
datawipping.pptxMethods of wiping data
PROF: LOUAI RAHAL
BY: SUMANTH
SRAVAN
VEERENDRA SAI
DATA WIPING
DATA WIPING is the process of logically removing data from a read/write medium so that it can no longer be read.
Someone can actually retrieve the files that you delete from your computer to prevent this data wiping is used
When you wipe a drive you overwrite all data on it with 0’s and 1’s or a random mix of 0’s and 1’s
Comparison between Deleting and Wiping
Data Deleting
Removing a file from computer.
The deleted file exists on your computer–you’ve simply hidden it in some place that’s not visible.
Data Wiping
Wiping means you are telling the operating system to not only update its file records, but also immediately overwrite the disk space with either zeros or random data.
Methods of Wiping Data
Data Erasure Software
The Degausser
Physical Destruction
Data Erasure Software
This Is one of the simplest ways to permanently wiping data.
There are so many software programs available by using them we can wipe data from hard drive so that data cannot be retrievable
The Degausser
The process of erasing/wiping a hard disk drive or magnetic tape.
The term “Degaussing” got it's name from the guass means magnetism.
This Degausser involves in Demagnetization which is removing magnetic filed from the equipment.
Makes media unusable and damages the
storage system.
Physical Destruction
Physical destruction achieved using two methods.
* Physical Destruction
* Disintegration
* Bending, breaking and mangling
Physical Destruction: Media destruction, either physical or electronic, is intended to prevent data disclosure which employs techniques such as disk shredding.
OFFSITE DATA WIPING
Relocate the PC to the factory and wipe them at the same time.
High chance of loss/theft of PC during relocation.
* Need on-site data deletion before relocation.
Onsite data wiping
Data wiping for different os
WINDOWS
OVERWRITE THE SPECIFIC DISK SPACE OCCUPIED BY FILE YOU WOULD LIKE TO ERASE
MAC OS
Permanent Eraser can be used as an alternative to secure empty trash
LINUX
The easiest way to wipe data from Linux is using Knoppix software which comes with a ready-to-use version of wipe.
Professional teams offer (dod) protocols for erasing hard disks
DOD means Department of Defense protocols are mandatory for secure hard drive data wiping.
Data Destruction Corporation offers you DOD- Complaint and HIPPA- Complaint solutions.
Seven pass overwrite
For very sensitive data, writing seven times using different characters can ensure that even expert hackers cannot recover the data.
1. “0” character pass
2. “1” character pass
3. Random character pass
4. Second random character pass
5. “o” character pass
6. “1” character pass
7. Random character pass
8. Verification pass
Sensitive areas configuration files
The XSAD File:
The configuration module has a panel where the user can select the applications he wants to wipe sensitive traces from each of these applications( IE, Mozilla Firefox, etc.) store their history traces in different places.
In order to prevent hard coding these locations in our product, we developed a file structure that uses a definition language which is called XSAD( extended Sensitive Area Definition).
This is a pure XML language customized for our own needs.
Remote disk wiping solution
