This article explains the importance of Database security and provides useful tips to ensure protection against threats and data thefts.
Obviously the utmost security of your database is of paramount importance but users should equally be aware of the internal and external threats. Without understanding the nature of data theft, it’s pointless to discuss the security methods. Having a well trained naval force in a desert warfare is not really going to be very helpful. Users have to understand and define the threats from which you want to protect your system.
So the first step is to define the parameters of the security measures that you wish to take. Every organization has different needs and requirements and thus different approaches of security.
Here are a few tips which can help you in securing your database and application development.
Regulating permissions of Users view Definitions
Most of the applications these days are web based and are hence more vulnerable to hacking and data manipulation. Hackers usually enter different entries in your web-forms and analyze the result to understand your work environment. It is only possible when you permit users the view definitions to see the stored procedures and table definitions.
Such information can lead to a big hack and huge data loss so it’s recommended to never allow this kind of permissions on user accounts especially in a web based application.
Use Multi accounts to run SQL Server Instances
If by chance someone gets access to your password of your main service account then your entire database and kingdom becomes vulnerable to data theft. Hacking could be external as well as internal and you might find some curious employees in your team lurking around to endanger the data. But if you try running SQL boxes with different accounts, then obviously you can minimize the potential damage.
Also, you should periodically change your passwords to enhance your own data security.
Restricting Apps that can pose a threat to SQL data
Protection is required from internal as well as external threats. So that’s why we allow specific apps to query our database so that we can keep an eye on our data queries and potential data theft. But in many cases, we do require the help of third party apps since SQL can’t handle everything on its own. However, you can also choose to write your own code to check the apps users are using.
Also, you should regularly query the processes on your server and never allow actions from unauthorized apps and also invest in a fix SQL Server tool.
Handle the Error Messages
Error messages can sometimes reveal useful information regarding your database structure and it’s usually a common case in web based apps. To protect your data, try to handle all the errors and show generic errors messages in return. This can help unnecessary SQL injection attacks.
Use xp_cmdshell wisely
Although xp_cmdshell comes disabled and has a bad reputation, still you can use this powerful and valuable tool to set permissions for other users. You can choose to lock it down but don’t ignore it completely if you don’t want to miss an excellent functional tool.
Victor Simon is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including repair accdb and sql recovery software products. For more information visit https://www.datanumen.com/