How to discover the website's security vulnerabilities

Latest Update: 10/11/2023

How to discover the website's security vulnerabilities

According to certain figures, Vietnam is one of the countries with the fastest Internet application and development speed in the world, with approximately 70 million active users accounting for more than two-thirds of the population and ranking 13th in the world in terms of users. The greater the number of Internet users, the more opportunities for hackers to attack the website.

What exactly is a website security vulnerability?

Website security vulnerabilities are flaws in software and hardware components that attackers (hackers) might take advantage of to compromise security, usability, and damage. breach the website’s security features

A website that is not secured can have negative repercussions such as:

  • Hackers seize control and disclose sensitive consumer data.

  • Damage the company’s reputation and customer trust.

  • Business financial impact

  • Google has blacklisted your website.

Based on the level of security, three levels of security vulnerabilities can be identified, ranging from low to high:

  • Type C vulnerability: Allows the implementation of DDoS (Denial of Services) attacks, affecting the quality of service, disrupting or disrupting the system, but without damaging data or achieving success. access to the system.

  • Type B vulnerability: Vulnerability allows users to gain additional access rights to the system without checking the validity, leading to information disclosure.

  • Type A vulnerability: Allowing outsiders to gain illegal access to the system and possibly destroy the entire system.

According to OWASP, there are some typical website security vulnerabilities.

OWASP (The Open Web Application Security Project) is an international non-profit organization specializing in web application security, helping professionals to test the security of websites in detail and effectively.

The security holes that businesses need to pay attention to when setting up and using the website can be mentioned as:

XSS (Cross-Site Scripting)

Attackers (hackers) can use the XSS vulnerability to take control of a website, shut it down, and steal user information. This is a browser-based attack that can inject JavaScript code into websites that have XSS errors. When users visit these websites, the hacker’s script code saves personal information immediately.

The method to avoid vulnerability is as follows:

The most efficient way to avoid this issue and secure the website is to double-check user input, block risky keywords, and only allow genuine data. Encoding special characters before putting up the website, especially ones that can be detrimental to users, is one of the more popular strategies to avoid controlling user input. The FIEO (Filter Input, Escape Output) philosophy is the best way to avoid XSS problems.

SQL Injection

Hackers can use the application’s input query flaw to insert potentially dangerous data. As a result, the server is vulnerable to a variety of attacks, including SQL injection, Xpath injection, XML injection, buffer overflows, LDAP lookups, and so on.

When a company is attacked, hackers will gain access to sensitive information without permission. Hackers can alter, destroy, or even use the information to extort money. SQL Injection is the most common type of online application attack.

How to prevent Injection Vulnerability:

To address this vulnerability, simply check to see if the input has been correctly filtered. Consider whether the data is accurate. Unless the input is reliable, it must be filtered and examined first. However, you should always double-check your complete input.

Furthermore, because filtering the data is challenging, you must rely on your framework’s built-in filtering mechanisms. These tried-and-true qualities will be put to the test. Frameworks should be considered by users because they are great solutions to defend your server.

Security Misconfiguration

Misconfigurations make it easier for attackers to gain access to your website, making it one of the most critical web application vulnerabilities to avoid.

Unused pages, vulnerabilities that haven’t been addressed, unsecured files and folders, and default settings are a few examples of misconfiguration problems that an attacker can use to obtain access to an unauthorized website. If attackers are able to take advantage of this web application flaw, they will gain access to sensitive information and be able to take control of user and admin accounts.

To avoid this vulnerability, you’ll need to:

Create a workflow for creating and deploying websites. Before deploying, it is vital to verify the server’s exact security state.

  • Before integrating the software further into the web, think about its security and usefulness.

Vulnerability Scan Tool

Businesses are always at risk from website security vulnerabilities. That is why businesses require a vulnerability scanning tool to discover and warn them about potential security threats. Here are some of the most popular and effective vulnerability scanning products on the market today.


SQLMap is a SQL database vulnerability detection tool. This is an open-source tool that automates the discovery and exploitation of SQL vulnerabilities. SQLMap is frequently utilized by security circles and hackers due to its amazing characteristics.

Framework for Metasploit

Metasploit Framework is an environment for testing server vulnerabilities. This program was originally written in the object-oriented language Perl, plus C and Python components. Metasploit was later rewritten in Ruby. The Metasploit Framework is compatible with the following operating systems: Windows, Linux, and macOS.

Burp Suite

Burp Suite is a tool that integrates many features to test the security of web applications. These features will serve to securely test the various components included in today’s modern web applications.

Burp Suite helps users evaluate website security criteria such as Conducting validation checks, checking for user version issues, or enumerating and evaluating web application input parameters…

Acunetix Web Vulnerability Scanner (WVS)

This program scans for all types of web vulnerabilities, such as SQL Injection, Cross-Site Scripting, and more. Acunetix employs a dynamic analytic approach based on heuristics and the Fuzzing algorithm. The Crawler Module begins by analyzing the entire web page by following all of its links. WVS will then map out the web page’s structure and display precise information about each file. WVS automatically highlights possible vulnerabilities on each website detected during the crawling process. Acunetix WVS will notify you when vulnerabilities are discovered.

Solutions to protect websites from cyber-attacks

VNIS (VNETWORK Internet Security) is a comprehensive and efficient platform that provides security solutions and boosts website transmission speed. VNIS combines the system’s power with the Web Application Firewall. A comprehensive website protection solution on the cloud platform is created using a multi-CDN system and AI technology. Aids in the comprehensive prevention of attacks on website security vulnerabilities, DDoS attacks, Botnet, Crawler, and other external threats.

Security settings in detail: Configure whitelisting, blacklisting, locating people, and customizing rules for vulnerabilities like XSS (Cross-Site Scripting), SQL injection, and other security rules.

Anti-DDoS capability: When combined with a worldwide Multi CDN system, DDoS assaults are prevented at levels 3, 4, and 7 (web application layer).

Always protect: When an attack is detected, AI technology based on the RUM (Real User Monitoring) system will immediately change the IP address. Please call (028) 7306 8789 or or or email to for expert support and consultation.

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