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What is a zero-day attack?

Before we discuss how to prevent a zero-day attack, let's take a look at what it is. Zero-day attack refers to the use of zero-day vulnerabilities to undermine network security. A zero-day vulnerability is a vulnerability in the underlying code of a program that has not been tested by developers, which is still a complex problem even for the most experienced software developers. No software is absolutely perfect, and although these vulnerabilities went undiscovered at first, their existence is a threat. If you want to know how to prevent zero-day attacks, you must first understand how to find zero-day vulnerabilities before you can fix them. There are some popular techniques for discovering zero-day vulnerabilities.

How to find zero-day loopholes?

Data statistics

Data statistics are the most common way to find vulnerabilities. The data can be used to find the errors that are most likely to occur in the code. Because the data uses past loopholes to find problems, data statistics often cannot find new problems.

Signature detection

This form of vulnerability detection is more complex than a statistics-based approach. Signature detection will generate artificial signals to prevent malware detection systems and detect zero-day vulnerabilities.

Behavior detection

Behavior detection is a more practical method. Behavior detection focuses on the program processing flow and checking for exceptions. If there is a problem with the software interaction, further inspection can be carried out.

Hybrid detection

Hybrid detection is the most advanced and useful method to prevent zero-day attacks because it is easier to detect problems in the program. Hybrid detection is a combination of all the above methods to cast the net as widely as possible. Although hybrid detection is most likely to catch zero-day vulnerabilities, it is less targeted than the above methods.

China Envis: protect core data and safeguard network security

Source: e Security

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