What Is Data Masking? Complete Guide

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Several questions may be asked when reading about the concept of data masking. These questions may include whether data masking is a form of encryption, whether data masking makes information more difficult to decipher, and what kinds of data masking are available. In this article, we will discuss some of these issues and offer tips on how to determine the right solution for your needs.


Keeping your data secure is vital, especially in the wake of the General Data Protection Regulation (GDPR). Data encryption is a great way to ensure that your data is secure and can’t be accessed by unauthorized parties. However, it doesn’t provide the separation of the original data from encoded data.

Data masking is a technique that allows you to protect your data without compromising its usability. You can achieve this by replacing the value of one column with another. For example, you can obfuscate your phone number with a generic value.

Masking data is useful for many different scenarios. If you’re implementing an application that will be used across business lines, you may want to mask all the data fields. This way, it will appear as though the overall subset is real.

It is also a good way to protect data in non-production environments. For example, you might want to substitute a customer’s first name with their real life surname. Similarly, you might want to substitute the values of a payroll table with a numerical range.

Data masking is a complex process that must be executed correctly. It’s important to understand the type of data that you need to mask and what you plan to use the data for. You will also need to choose an appropriate masking strategy to keep your data safe.

The most common type of data masking is static. This approach is suited for large datasets. When your organization uses a single database, it is not practical to implement data masking using a single tool.


Whether it’s a phone number, Social Security number or credit card number, data masking is used to protect sensitive information. The main reason for this is to ensure that a hacker doesn’t have access to the original information.

The process of masking data involves applying a technique that modifies the value of the original information. This may include changing the name or changing the format of the number.

One of the most popular techniques for masking is substitution. It involves replacing the value of the original data with another, random value. This is a good technique for protecting your data because it preserves its original look and feel.

Another method is called shuffling. This technique is also a good method for masking. It works by reordering the data within a column. This process can be difficult to execute.

Another strategy for masking is using a lookup file. Lookup files are a good way to mask data because they allow an alternative version of the data to be created. This alternate version of the data won’t affect usability or functionality. The problem with this technique is that lookup files can fall into the wrong hands and reveal the original data set.

Pseudonymization is another form of data masking. This technique uses a combination of substitution and scrambling. This technique is especially useful for protecting sensitive information.

The Luhn algorithm is an example of a very specific data masking method. This technique is used to verify the authenticity of credit card numbers and Medicare numbers. The algorithm modifies numbers by a random percentage.

Number and date difference

Several fields of data have the ability to be masked. It’s a good idea to look into the possibilities of obfuscating specific fields of data to protect sensitive information.

A number of database vendors offer features and services to help simplify data masking. The most important thing is that masked data remains as accurate as the original. The process of masking can also be automated. This allows companies to eliminate the time-consuming manual processes.

For example, a credit card number may be masked with a random sequence of numbers. This can be done to protect information such as a card holder’s first name or address.

There are many other techniques to conceal sensitive data. The best way to determine which methods are appropriate is to review the different challenges faced by database administrators. It’s best to use a combination of techniques to make sure you get the most out of your data.

In some instances, the most obvious data masking trick is to simply remove some values from the data set. This may be the most secure method, but it can also degrade the integrity of the data.

Another method to mask data is to shuffle the data. This can be helpful in some areas, but can be tricky to do well. It’s also susceptible to reverse engineering.

A similar method is to use the Luhn algorithm to verify data in DB structures. This is often used to check Social Security, Medicare and credit card numbers.

Aging date

Putting a monetary value on the cost of your data can be a daunting task, but using date data masking techniques can alleviate some of the pain. One of the more obvious benefits of date data masking is that it removes the need to have two separate databases. This can be especially beneficial for those dealing with complex and sensitive personal data. Moreover, it can also facilitate a streamlined data retrieval process. This can be accomplished in several ways, including by implementing a single database, or by combining multiple databases into a single one.

Among the many date data masking options, the most notable are the aforementioned date field range masking and date field matching. The former allows you to modify the values in a date field, while the latter takes care of the lion’s share of the work. In both cases, you’ll need to use a robust data masking technique that meets your organization’s security and privacy needs.

Similarly, you’ll need to make sure that you have the requisite number of servers in place to power your data masking strategy. This may include multiple systems, a variety of operating systems, and a plethora of network connectivity. The last point can be achieved through a carefully selected server infrastructure and a unified data protection plan. The end result is a data management solution that is suited for your business, no matter the size.


Using data masking can be a great way to protect sensitive business information. It can also be a good way to share data with authorized users. However, you need to be careful about which technique you use. The best methods of data masking are substitution and encryption.

The first step is to determine what type of information you are protecting. You can use substitution for different types of data, but you need to be sure that the algorithm you are using is compatible with the other types of data in your database. For example, if you have a table for a salary, you can replace the real value with the value of a real-life salary. The result will look authentic and will not degrade the integrity of the data.

Similarly, you can shuffle the data. This technique is similar to replacement but it does not reveal personal details. This is a good method for data that has been sourced from multiple databases.

Another simple method of data masking is character scrambling. This is a method of keeping data real, but a lot more complex than simply replacing values. It can be applied to many different types of data, but it isn’t the best option.

It is also important to know where your data is stored. If you don’t have a backup copy of your database, you may be unable to access your data in case of a disaster.


Whether you need to protect your customer data, prevent the sharing of sensitive information, or drive innovation, data masking can help you achieve all of these goals. There are many types of data masking, however, and each type requires a different approach to ensure that your data maintains its integrity and authenticity.

Static data masking is one of the most common methods. Using this technique, you can create a masked set of data from the production database. The masked set should have the same values as the original data, and the results of the masking test should mirror the original data. This will reduce the risk of a data breach and the risk of data misuse.

On-the-fly data masking is a more dynamic method of masking. This is used in environments with continuous software development and uninterrupted data flow. It allows developers to quickly read and mask a small portion of production data.

In an environment with multiple databases, masked values may be required to be consistent across all of the databases. This is usually achieved through substitution. It preserves the appearance of the data records, while allowing developers to create authentic-looking replacements for the data.

When performing on-the-fly data masking, applications initially access a single database. They then use a network proxy to mask data within stored procedures and between users. This does not change the way applications connect, but it can result in corruption.

By Bullguardreview