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13 Online Free Tools to Scan Website Security Vulnerabilities & Malware

vulnerability scanner
Invicti Web Application Security Scanner – the only solution that delivers automatic verification of vulnerabilities with Proof-Based Scanning™.

Scan your website, blog for security vulnerabilities, malware, trojans, viruses, and online threats

One of the most trending talks in Information Technologies is Web Security. Hundreds of web vulnerabilities exist today, and below are some of the most common ones.


We often pay attention to website design, SEO, and content and underestimate the security area. As a website owner, web security should have higher importance than anything.

There were many questions about how to scan for website security and mobile app vulnerabilities, so here you go. This article will list some of the best tools to scan your site for security vulnerabilities, malware, and online threats.


SUCURI is one of the most popular free website malware and security scanner. You can do a quick test for malware, blacklisting status, injected SPAM, and defacements.


SUCURI also helps clean and protect your website from online threats and works on any website platform, including WordPress, Joomla, Magento, Drupal, phpBB, etc.


SSL Server Test by Qualys is essential to scan your website for SSL/TLS misconfiguration and vulnerabilities. It provides an in-depth analysis of your https:// URL including expiry day, overall rating, cipher, SSL/TLS version, handshake simulation, protocol details, BEAST, and much more.


As a best practice, you should run the Qualys test after making any SSL/TLS-related changes.

HostedScan Security

HostedScan Security is an online service that automates vulnerability scanning for any business. It provides a comprehensive suite of scanners to scan networks, servers, and websites for security risks. Manage your risks via dashboards, reporting, and alerts.


The scanners include:

  • Network vulnerability scanner to test for CVEs and vulnerable, out-of-date software
  • Web application scanner to check for SQL injection, vulnerable javascript libraries, cross-site scripting, and more
  • Full TCP and UDP port scanner to detect firewall and network misconfiguration
  • TLS/SSL scanner to validate certificates and test for SSL vulnerabilities such as Heartbleed and Robot

HostedScan Security offers a free tier of 10 scans per month, making it simple and easy to get started scanning and securing your business.


Intruder is a powerful cloud-based vulnerability scanner to find weaknesses in the entire web application infrastructure. It is enterprise-ready and offers a government & bank-level security scanning engine without complexity.


Its robust security checks include identifying:

  • Missing patches
  • Misconfigurations
  • Web application issues such as SQL injection & cross-site scripting
  • CMS issues

Intruder saves you time by prioritizing results based on their context and proactively scanning your systems for the latest vulnerabilities. It also integrates with major cloud providers (AWS, GCP, Azure) and Slack & Jira.

You can give Intruder a try for 30 days for free.


Quttera checks the website for malware and vulnerabilities exploits.


It scans your website for malicious files, suspicious files, potentially suspicious files, PhishTank, Safe Browsing (Google, Yandex), and Malware domain list.


UpGuard Web Scan is an external risk assessment tool that uses publicly available information to grade.


Test results are categorized into the following groups.

  • Website risks
  • Email risks
  • Network security
  • Phishing and Malware
  • Brand protection

Good to get a quick security posture of your website.


SiteGuarding helps you to scan your domain for malware, website blacklisting, injected spam, defacement, and much more. The scanner is compatible with WordPress, Joomla, Drupal, Magento, osCommerce, Bulletin, and other platforms.


SiteGuarding also helps you to remove malware from your website, so if you are site is affected by viruses, they will be useful.


Mozilla recently introduced an observatory, which helps a site owner to check various security elements. It validates against OWASP header security, TLS best practices, and performs third-party tests from SSL Labs, High-Tech Bridge, Security Headers, HSTS Preload, etc.


Web Cookies Scanner

Web Cookies Scanner is a free all-in-one security tool suitable for scanning web applications. It can search for vulnerabilities and privacy issues on HTTP cookies, Flash applets, HTML5 localStorage, sessionStorage, Supercookies, and Evercookies. The tool also offers a free URL malware scanner and an HTTP, HTML, and SSL/TLS vulnerability scanner.


To use this tool, you need to enter your site’s full domain name and click on Check! After a while, you’ll get a full vulnerabilities report, showing details of all issues found and an overall privacy impact score.

You can use the on-demand service for free with no restrictions, or you can subscribe for a free trial of a fully automated RESTful API with different plans, which offer between 100 and unlimited API scans per month.


Fully supported by ethical hackers, the Detectify domain and web application security service offer automated security and asset monitoring to detect more than 1500 vulnerabilities.


Its vulnerability scanning capacity includes OWASP Top 10, CORS, Amazon S3 Bucket, and DNS misconfigurations. The Asset Monitoring service continuously monitors subdomains, searching for hostile takeovers and alerting if anomalies are detected.

Detectify offers three pricing plans: Starter, Professional, and Enterprise. All of them start with a 14-day free trial, which you can take without using a credit card.


Probely provides a virtual security specialist that you can add to your development crew, security team, DevOps, or SaaS business. This security specialist will scan your web application and find all of its vulnerabilities. You can think of Probely as a family doctor that gives you periodic diagnostics and tells you what to do to fix any issue.


It is a tool mainly built for developers, letting them be more independent when it comes to security testing. Its API-First development approach assures that any features will be first available on the service’s API version. It has many pricing plans, including a free one with a light scanning capacity.


The website vulnerability scanner is a comprehensive set of tools offered by Pentest-Tools that comprise a solution for information gathering, web application testing, CMS testing, infrastructure testing, and SSL testing. In particular, the website scanner is designed to discover common web application vulnerabilities and server configuration issues.


The company offers a Light version of the tool, which performs a passive web security scan. It can detect many vulnerabilities, including insecure cookie settings, insecure HTTP headers, and outdated server software. You can perform up to 2 free, full scans of your website to get a comprehensive assessment. The results will tell you about vulnerabilities such as local file inclusion, SQL injection, OS command injection, and XSS, among others.


One of the popular website security scanners, ImmuniWeb, checks your site against the following standards.

  • PCI DSS & GDPR compliance
  • HTTP headers, including CSP
  • CMS specific test for WordPress and Drupal sites
  • Front-end library vulnerabilities

If you are using WordPress, then you may want to test your site against WordPress Security Scanner.


The above-listed security scanner is good for one or a few times on-demand tests. However, if you need to scan regularly, you may want to leverage an open-source vulnerabilities scanner or SaaS-based.


Beware of these 8 online scams while browsing the internet.

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