Data Wiping

Presented By

E-Waste Recyclers India

What is Data Wiping

Data erasure (also called data clearing or data wiping) is a software-based method of overwriting the data that aims to completely destroy all electronic data residing on a hard disk drive or other digital media.

What Data Wiping Does?

When you “wipe” a drive, you overwrite all data on it with 0’s, 1’s, or a random mix of 0’s and 1’s.

Why Data Wiping is necessary?

Wouldn’t the mere deletion of files be enough to keep your system secure? With the help of specially designed software applications, hackers can actually retrieve the files that you delete from your computer. To prevent these hacker Data Wiping process is necessary.

Data Wiping process?

Boot and Nuke Method Physical Destruction Method Selective File Wipe Methods

Data Wiping process?

Boot and Nuke Method

» Download Darik's Boot and Nuke

» Burn DBAN to a CD

» Boot from the CD

» Delete the data.

Data Wiping process?

Physical Destruction Method

» Remove the old hard drive» Unscrew all the screws» Destroy the platters

Data Wiping process?

Selective File Wipe Methods

» For Windows» For Mac OS X » For Linux (Ubuntu)

Selective File Wipe Methods

For Windowso Secure delete files, directories or sanitize free

space.oWipe File: Overwrites the specific disk space

occupied by the file you'd like erased.oWBD(Wipe Bad Disk): Can wipe disks with bad

sectors.

Selective File Wipe Methods

For Mac OS X o Permanent Eraser: Can be used as an alternative to

the "Secure empty trash" option. o Disk Utility o srm

Selective File Wipe Methods

For Linux (Ubuntu)oWipe Package from Ubuntu Unleashed: Adds

secure multi-pass file deletion, like DeleteOnClick does in Windows.

Contact us for Secure Data Wiping

E-Waste Recyclers India can help you get the best return out of your excess IT equipment while ensuring that your sensitive information is completely

wiped from the drives.

Conclusion

Data overwritten once or twice may be recovered by subtracting what is expected to be read from a storage location from what is actually read… However by using the relatively simple methods presented in this paper the task of an attacker can be made significantly more difficult, if not prohibitively expensive.