Get a free application, infrastructure and malware scan report - Scan Your Website Now

Subscribe to our Newsletter
Try AppTrana WAAP (WAF)

How to Evaluate Web Application Security Scanners?

Posted DateNovember 13, 2019
Posted Time 3   min Read

One of the key components of proactive web application security is the web application security scanner. However, choosing the best web security scanner, despite being a critical decision, is a tough one to make. There are several options available in the market and you must evaluate them before choosing one. In this article, we will discuss evaluating vulnerability scanners.

Always Start with Your Requirements

The key to choosing the right web application scanner for your business is understanding your requirements and context first as a one-size-fits-all approach does not work for web app security. Your needs will differ based on your unique business context, current security posture, risks involved, threats that your business is exposed to, budgetary constraints, etc.

List down all the applications and its components that need to be scanned including web development framework, content management systems, backend database servers, third-party components, client-side scripts, custom 404 error pages (if any), authentication mechanisms, URL structures (if URL rewrite rules are used), If any anti-CSRF mechanisms, they may act as barriers to scanners. So, put these down in your requirements too.

Automate for agility, accuracy, and efficiency

Web applications are constantly changing with the changing business and consumer needs. The threat landscape is also fast-changing. Additionally, several moving parts exist in web applications today, and they run on third-party applications/ platforms too. To keep up with these changes and ensure agile, effective, and accurate application security, automation must be leveraged, especially in web vulnerability scanning. Automated web app scanners scan for much larger sets of threats and vulnerabilities in an expedited manner, with greater accuracy than manual scanning.

How do web vulnerability scanners work?

The vulnerability scanner will crawl all the web applications to identify all possible entry points for attackers, attack parameters, and vulnerabilities. While crawling, the scanner will access every link it has discovered, including client-side scripts, files, etc., and then builds a software structure of the entire application. This is followed by the scanning stage, where the vulnerability scanner will send the specially-crafted payload to simulate attacks against the web application to analyze if it is vulnerable or not.

Testing Web Application Scanners

What better way to evaluate web application scanners than trying them firsthand? Use the trial or demo version of the scanner to evaluate how the scanner works.

Make sure to use the scanner on a realistic web application (ones that are identical to the real ones) instead of demo versions or web applications that have been built for educational purposes such as DVWA or OWASP WebGoat. Your business and your web application are unique and using demo sites for evaluating the vulnerability scanner will not show you the full picture of how it will work on your application, in your context.

Criteria for Evaluating Web Vulnerability Scanners

Web Application Coverage

Check the list of crawled parts/ objects during the scan. It must include all files and their variations, content management systems, scripts, databases, client scripts, input parameters, directories, etc. on your application. If all objects are not on the sitemap representation, the crawler is not scanning the entire application and will, therefore, not be able to detect all the vulnerabilities.

Integration with Other Web Security and Development Tools

The web security scanner must easy to integrate with other security and development tools. For instance, if the scanner can import the output of say WAF or manual security audits, you to strengthen security by enabling the scanner to automatically include un-crawled areas or new signatures for comprehensive coverage.

Quality and Timeliness of Reporting

Compare the web vulnerability reports provided by the different scanners to understand if the reports are comprehensive (covers all the vulnerabilities that exist in the application – commonly exploited ones as well as less commonly exploited but dangerous vulnerabilities – and provides support options), timely and customizable (to view reports with desired fields and formats).

24×7 Expert Support

Round-the-clock support from experts is key to getting timely remediation guidelines, proof of concept for zero assured false positives, and so on.

The best web vulnerability scanners such as the one offered by Indusface from AppTrana are custom-built based on your requirements and context with surgical accuracy to ensure that you are always ahead of attackers in identifying vulnerabilities and safeguarding your web application.

web application security banner

Spread the love

Join 47000+ Security Leaders

Get weekly tips on blocking ransomware, DDoS and bot attacks and Zero-day threats.

We're committed to your privacy. indusface uses the information you provide to us to contact you about our relevant content, products, and services. You may unsubscribe from these communications at any time. For more information, check out our Privacy Policy.

Related Posts

Web Vulnerability Scanner Tools
What Are the Uses of Website Vulnerability Scanner Tools?

The average cost of data breaches in 2021 was USD 4.24 million, the highest figure in at least 17 years. So, proactive, accurate, and effective identification of security vulnerabilities is non-negotiable and.

Spread the love

Read More
Web Vulnerability Scanning
How Indusface Web Vulnerability Scanner Works?

The average cost of data breaches in 2021 stands at a massive USD 4.24 million! What makes data breaches and cyber-attacks possible is the presence of unpatched/ unprotected vulnerabilities on the website/ web application. Vulnerabilities provide gateways to attackers to.

Spread the love

Read More
Web Vulnerability Scanner
What are the Criteria to Choose the Best Web Application Vulnerability Scanner?

Given its criticality in pre-empting security risks, choosing a web vulnerability scanner that can meet the unique and complicated needs of the business is critical. Several options are available in.

Spread the love

Read More


Fully Managed SaaS-Based Web Application Security Solution

Get free access to Integrated Application Scanner, Web Application Firewall, DDoS & Bot Mitigation, and CDN for 14 days

Know More Take Free Trial


Indusface is the only cloud WAAP (WAF) vendor with 100% Customer Recommendation for 3 consecutive years.

A Customers’ Choice for 2022 and 2023 - Gartner® Peer Insights™

The reviews and ratings are in!