Data Masking is one of the latest features
introduced by Informatica and is big
advantage considering the security of sensitive data stored in
Datawarehouse.For eg
- SSN number of a customer
- Credit Card number
- Phone number etc…
This
is done by masking the original data using various masking techniques i.e. converting the original data into some
other readable format. This is done without affecting the granularity of the
table ,all the integrity constraints are kept the same.The objective behind
using data masking transformation is to restrict the outside world from
accessing the Customer Information.
Since
data ,masking is an integrated option available in @Informatica Power centre it greatly reduces the Development effort.
Why we need data masking?
Normally
in projects we have non production environments like development, testing and
training . Often the IT companies are careless about the security in the developments phase. While moving the code
into actual production environment they rarely notice that the information can
be leaked out.So we need to be careful here.In order to avoid this situation we
can do masking at the development phase itself and then outsource the data.That
we will be more safer.
Another
advantage is that we can avoid the use of Dummy values in the testing and
development.Instead of using Dummy values we can use the actual and then mask
it and the successfully promote to the Live Environment.
Now
we will go through the different algorithms used for data masking
- Nondeterministic randomization:Replace a sensitive field with a randomly generated .This can be some either any number or date field.
- Blurring: Add a random variance to the original value .Variance can be small or larger. For example adding 10 percent increase in the salary of employee.
- Repeatable masking: Maintain referential integrity by using values that are unique and different.Eg Replace the SSN number 1/45/89 with 12/22/44
- Substitution: Randomly substitute original values with entirely different but real valuesE.g., substitute “Wayne Smith” with “Don Kelly”)
Will
keep updating……
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