There is statistical evidence supported by
multiple secure Data Wiping
companies that indicate that, in countries such as Argentina, Chile, Colombia,
Costa Rica, Ecuador, El Salvador, Honduras, Mexico, Nicaragua, Panama, Brazil,
and Uruguay, Asia two out of three companies face severe data management
problems and risks. There is a life cycle in the use of data, and all must
be managed appropriately throughout this period, from its capture to its
destruction. The secure hard drive erase process is an essential part of
data management. At the end of the data life cycle, companies can store it
for later use, or to erase and destroy it. Secure file deletion is the
deletion process that makes data unreadable or unrecoverable. There are
different types of options to delete files,
Experts from secure Data Wiping company mention that there are
different methods of secure erasing of hard drive. It is the
responsibility of the companies to categorize the data that will be destroyed
according to the devices used for storage, level of confidentiality and future
plans for these devices. With the help of secure file Data Wiping
professionals, companies can decide on the appropriate method of performing
secure data wiping. Additionally, after
files are permanently deleted, companies must implement a review process to
verify the effectiveness of each solution or service.
The most
common methods for secure erase are:
Cleaning method
This
method uses tools or devices to overwrite storage space on hard drives,
solid-state drives, and PCs that store non-sensitive information, so that this
data can be replaced by other data without compromising confidential
information. Using this secure hard disk erase method allows overwriting
of logical storage address and user storage address. It is worth
mentioning that you cannot safely erase your hard drive, solid state drives or
PC if the drive is corrupted or overwriting is not allowed by default.
In the
case of smartphones (which are not actually considered storage devices), the
cleaning method involves restoring the device to its factory
state. According to specialists in digital Data Wiping tools, some devices
do not directly support overwriting, so only the removal of file indicators is
allowed. Digital Data Wiping solutions must ensure that the device
interface prevents recovery of deleted data from a hard drive.
Purge
method
This
secure file deletion method uses physical or logical methods that make it
impossible to recover data, even with the help of the most advanced
tools. Block Erase and Crypto Erase are an integral part of the purge
method and are highly effective for secure file Data Wiping. Testimonials
from firms that have employed some secure hard drive Data Wiping method claim that
degaussing (also known as degaussing) can be considered a purging
method. To erase or recover a hard drive, professionals must consider the
strength of the degaussing and ensure that it matches the coercivity of the
devices. However, degaussing cannot be used for secure deletion of files
on devices that do not contain magnetic storage.
Destroy
method
This
method helps in Data Wiping but makes it unfeasible to erase data and recover
hard drive, ensuring that the devices cannot be used again for data
storage. According to specialists for the safe Data Wiping of hard drives,
there are multiple methods to erase files and destroy devices, which will be
summarized below:
§ Disintegration , pulverization , melting, and incineration :
These methods are designed to completely destroy devices such as hard drives,
solid-state drives, and PCs and erase data safely. These methods are
carried out by various Data Wiping and recovery providers at facilities outside
of the customer. The providers of these services must demonstrate the
ability to erase data on a hard drive or any information stored on these
devices effectively and safely.
§ Shredding : In this method
industrial shredders are used to destroy the devices so that their
reconstruction is impossible. The recommendations issued by hard drive
recovery firms mention that the remains of these devices must be small enough
so that the information cannot be recovered, so the shredding process must be
repeated more than once. In addition, some firms resort to mixing the
shredded material with other materials to make the recovery process even more
difficult.
Methods for Secure Data Wiping Review
Reviewing
secure data wiping processes is an essential step in maintaining
confidentiality. The review must be performed by personnel who are not
part of the secure data wiping services. In general there are two
different methods for reviewing secure Data Wiping
services.
§ Full Review : In this method the
review is applied to each device. This method of reviewing services is
very detailed, so it could take a long time.
§ Sampling Review : In this method the
review is applied to a selected subset of the formatted devices. Although
it is not a thorough method, it is faster
Review of secure formatting
equipment or tools
According
to the company of secure Data Wiping of hard disk, the review
of the processes of Data Wiping secure of data is not the only guarantee
demanded by the companies. If a company is using digital erase or secure
formatting device or tools, these devices should also be regularly checked and
maintained. Some digital erase solutions include devices such as
degaussing and standalone hard drive secure erase machines.
Review of competencies in
secure Data Wiping
This is
an important element, along with reviewing the processes of secure data wiping
services. Companies should review the competencies and experience of the
service provider and ensure that their employees receive secure data Data
Wiping training during the implementation of this process.
Review results in secure erase
The
purpose of this review is to verify that the secure hard disk erase was indeed
completed. Most companies do not have access to a hard drive recovery lab
for verification. That is why digital Data Wiping or secure formatting
companies implement a test to determine the success of the process. During
a thorough review, the disk must be read in its entirety to verify that there
is no data on it. This type of review will take a lot of time and effort,
but companies must ensure the effectiveness of the secure formatting process.
Secure
erase tools experts mention that companies can choose the sampling review
method to verify the effectiveness of digital Data Wiping, although they must
take into account some considerations involved in this method:
§ There are different safe
formatting tools on the market to erase and recover hard drives that do not
completely delete the files on the device. To do a secure hard drive
erase, professionals should review pseudo-random addresses during secure hard
drive erase and select subsections of the hard drive for verification. The
best way to perform Secure Hard Disk Erase is to select at least two
pseudo-random addresses within each selected subsection. In the secure
hard drive erase industry, it is considered standard to cover at least 5% of the
selected subsections.
§ Another important point to
keep in mind during the sample review is to select the first and last addresses
on the storage device as some digital erase tools do not delete the data from
the first and last addresses on the disk.
§ For Data Wiping of
encrypted data, the sample review process must work differently, as the content
of the original data is unknown and comparison is not possible. When
companies use encrypted Data Wiping, there are multiple
options for verification, each using a quick review of a subset of the
devices. Secure Hard Disk Erase consists of a selection of pseudo-random
addresses in different subsections for sampling. However, the process
consists of searching for files in known places and therefore the percentage of
addressable area is relatively small, according to data recovery experts.
§ During the process review,
it is also advisable to select a subset of devices for review, using different
tools. According to the recommendations of hard disk Data Wiping
companies, at least 25% of the cleaned devices should be considered during this
review. This review method will help you to compare and validate the
effectiveness of the solutions.
Businesses
can, in conjunction with secure file Data Wiping professionals, easily
decide which method is appropriate for their requirements, as well as train
their staff during this process.
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