By Ron Ben Natan
This e-book is ready database protection and auditing. you'll study many tools and strategies that would be important in securing, tracking and auditing database environments. It covers assorted issues that come with all points of database safeguard and auditing - together with community defense for databases, authentication and authorization matters, hyperlinks and replication, database Trojans, and so on. additionally, you will examine of vulnerabilities and assaults that exist inside of a variety of database environments or which were used to assault databases (and that experience considering that been fixed). those will usually be defined to an "internals" point. there are lots of sections which define the "anatomy of an assault" - prior to delving into the main points of ways to strive against such an assault. both very important, you'll know about the database auditing panorama - either from a company and regulatory requisites standpoint in addition to from a technical implementation point of view. * beneficial to the database administrator and/or defense administrator - whatever the detailed database seller (or proprietors) that you're utilizing inside of your organization.* Has a great number of examples - examples that pertain to Oracle, SQL Server, DB2, Sybase or even MySQL.. * some of the suggestions you'll discover during this ebook seriously is not defined in a guide or a e-book that's dedicated to a definite database product.* Addressing advanced concerns needs to take note of greater than simply the database and targeting services which are supplied basically through the database seller isn't continuously sufficient. This ebook bargains a broader view of the database setting - which isn't depending on the database platform - a view that's vital to make sure strong database safety.
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All of these steps take time and a tremendous effort from the good guys. Because of these inherent asymmetries, the security world understood a long time ago that the only way to combat attacks and provide any hope for good security is through a strategy known as defense-in-depth. This strategy uses multiple layers of security rather than trying to build an ultimate security layer. 1 illustrates this concept in nontechnical terms. If you employ multiple layers of security, then a hole that is punched through any one layer does not mean that your assets are compromised.
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The reason is that this code oversteps memory that may belong to another variable or that may be used by other elements in the program. Before we move on to understand how this simple bug can be used by an attacker, it is worthwhile mentioning that the two code fragments shown previously are examples of problems that create stack buffer overflow vulnerabilities. There is a second class of buffer overflow problems that involve the heap and that occur when a developer would use char *buf = malloc(10) rather than char buf[100], but in general stack-based buffer overflow vulnerabilities are more common and the principles are not very different.