Best Vulnerability Scanners with a Free Trial of 2025

Your attack surface is the sum total of all attack vectors that can be used against your perimeter defenses. It is simply the amount of information that you are exposing the outside world. The attack surface is the most important thing hackers will need to exploit to break into your network. When attacking targets, professional hackers usually follow the cyber kill chains. Typically, the first step in this process is to survey the target's attack surfaces. This is called advanced reconnaissance. By reducing the attack surface, you can reduce the risk and prevent attacks from ever happening. The cyber kill chain is a method for categorizing and tracking all stages of a cyberattack, from early reconnaissance to the exfiltration data.

Runecast is an enterprise IT platform that saves your Security and Operations teams time and resources by enabling a proactive approach to ITOM, CSPM, and compliance. Your team can do more with less via a single platform that checks all your cloud infrastructure, for increased visibility, security, and time-saving. Security teams benefit from simplified vulnerability management and regulatory compliance, across multiple standards and technologies. Operations teams are able to reduce operational overheads and increase clarity, enabling you to be proactive and return to the valuable work you want to be doing.

GitGuardian is a global cybersecurity startup focusing on code security solutions for the DevOps generation. A leader in the market of secrets detection and remediation, its solutions are already used by hundred thousands developers in all industries. GitGuardian helps developers, cloud operation, security and compliance professionals secure software development, define and enforce policies consistently and globally across all their systems. GitGuardian solutions monitor public and private repositories in real-time, detect secrets and alert to allow investigation and quick remediation.

Invicti (formerly Netsparker) dramatically reduces your risk of being attacked. Automated application security testing that scales like none other. Your team's security problems grow faster than your staff. Security testing automation should be integrated into every step in your SDLC. Automate security tasks to save your team hundreds of hours every month. Identify the critical vulnerabilities and then assign them to remediation. Whether you are running an AppSec, DevOps or DevSecOps program, help security and development teams to get ahead of their workloads. It's difficult to prove that you are doing everything possible to reduce your company's risk without full visibility into your apps, vulnerabilities and remediation efforts. You can find all web assets, even those that have been forgotten or stolen. Our unique dynamic + interactive (DAST+ IAST) scanning method allows you to scan the corners of your apps in a way that other tools cannot.

Nessus is recognized by over 30,000 organizations globally, establishing itself as a leading security technology and the benchmark for vulnerability assessments. Since its inception, we have collaborated closely with the security community, ensuring that Nessus is continuously refined based on user feedback, making it the most precise and thorough solution available. After two decades, our commitment to community-driven enhancements and innovation remains steadfast, allowing us to deliver the most reliable and comprehensive vulnerability data, ensuring that critical vulnerabilities that could jeopardize your organization are never overlooked. As we move forward, our dedication to improving security practices continues to be our top priority, reinforcing Nessus's position as a trusted tool in the fight against cyber threats.

Crashtest Security, a SaaS-based security vulnerability scanner, allows agile development teams to ensure continuous security even before reaching Production. Our state-of the-art dynamic application security test (DAST), integrates seamlessly into your development environment and protects multipage and JavaScript applications, as well microservices and APIs. Crashtest Security Suite can be set up in minutes. You will also have advanced crawling options and the ability to automate your security. Crashtest Security can help you keep your code and customers safe by allowing you to see vulnerabilities in the OWASP Top 10.

Hakware Archangel, an Artificial Intelligence-based vulnerability scanner and pentesting instrument, is called Hakware Archangel. The Archangel scanner allows organizations to monitor their systems, networks, and applications for security flaws with advanced Artificial Intelligence continuously testing your environment.

Astra Website Protection and Pentesting Suite is a go-to-security platform for securing your websites, web apps, mobile apps, cloud infrastructures (AWS/GCP/Azure), APIs and more. Astra offers Web Application Firewall, Malware Scanner, Vulnerability Management, Penetration Testing, Automated Vulnerability Scanning, with Pentest Compliance, CI/CD integrations and much more. With Astra Website Protection, you don't have to worry about any security incident and customer data breach - so that you can focus more on the business aspect of your company.

SaltStack is an intelligent IT automation platform that can manage, secure, and optimize any infrastructure--on-prem, in the cloud, or at the edge. It is built on an event-driven automation engine that detects and responds intelligently to any system. This makes it a powerful solution for managing complex environments. SaltStack's new SecOps offering can detect security flaws and mis-configured systems. This powerful automation can detect and fix any issue quickly, allowing you and your team to keep your infrastructure secure, compliant, and up to date. Comply and Protect are both part of the SecOps suite. Comply scans for compliance with CIS, DISA, STIG, NIST and PCI standards. Also, scan your operating system for vulnerabilities and update it with patches and patches.

Snyk is the leader in developer security. We empower the world’s developers to build secure applications and equip security teams to meet the demands of the digital world. Our developer-first approach ensures organizations can secure all of the critical components of their applications from code to cloud, leading to increased developer productivity, revenue growth, customer satisfaction, cost savings and an overall improved security posture. Snyk is a developer security platform that automatically integrates with a developer’s workflow and is purpose-built for security teams to collaborate with their development teams.

Haltdos ensures the 100% high availability of your website/web services by providing intelligent Web Application Firewall and application DDoS mitigation, Bot Protection, SSL offloading, Load Balancing solution over the public and private cloud that monitors, detects, and automatically mitigates a wide range of cyber-attacks including OWASP top 10 and Zero-day attacks, without requiring any human intervention.

VulnSign is an online vulnerability scan that is fully automated, configurable by customers and offers advanced features. VulnSign can scan all types of web applications, regardless of their technology. It uses a Chrome-based crawling engine to identify vulnerabilities in legacy, custom-built, modern HTML5, Web 2.0, and Single Page Applications (SPA) applications. It also offers vulnerability checks for popular frameworks. VulnSign's vulnerability scanner is easy to use. Most of the pre-scan configuration can also be automated. It's a complete vulnerability management solution that supports multiple users and integrates well with other systems. To test it, you only need to specify the URL and credentials (to scan password-protected websites) and launch a vulnerability scanner.

Cloud security best practices as an option CloudSploit is the most popular open-source security configuration monitoring tool for cloud infrastructure. Cloud security experts from all over the globe collaborated to create a repository for tests for cloud infrastructure like AWS, Azure and GitHub.

As the top choice for automated web application security testing, Acunetix by Invicti stands out as the preferred security solution among Fortune 500 firms. DevSecOps teams can efficiently navigate through complexities to identify hidden risks and address serious vulnerabilities, allowing for comprehensive detection and reporting on various security flaws. Featuring a state-of-the-art crawler that adeptly handles HTML5, JavaScript, and single-page applications, Acunetix facilitates the thorough examination of intricate, authenticated applications, providing a clearer understanding of an organization's risk profile. Its status as a leader in the field is well-deserved, as the technology behind Acunetix is the only one available that can autonomously identify out-of-band vulnerabilities, thus ensuring complete management, prioritization, and oversight of vulnerability threats based on their severity. Additionally, Acunetix is offered in both online and on-premise versions, seamlessly integrating with popular issue trackers and web application firewalls, which allows DevSecOps teams to maintain momentum while developing cutting-edge applications. This unique combination of features not only enhances security but also streamlines the workflow for teams dedicated to keeping their applications secure.

Qualys VMDR stands out as the industry's leading solution for vulnerability management, offering advanced scalability and extensibility. This fully cloud-based platform delivers comprehensive visibility into vulnerabilities present in IT assets and outlines methods for their protection. With the introduction of VMDR 2.0, organizations gain enhanced insight into their cyber risk exposure, enabling them to effectively prioritize vulnerabilities and assets according to their business impact. Security teams are empowered to take decisive action to mitigate risks, thereby allowing businesses to accurately assess their risk levels and monitor reductions over time. The solution facilitates the discovery, assessment, prioritization, and remediation of critical vulnerabilities, significantly lowering cybersecurity risks in real time across a diverse global hybrid IT, OT, and IoT environment. By quantifying risk across various vulnerabilities and asset groups, Qualys TruRisk™ enables organizations to proactively manage and reduce their risk exposure, resulting in a more secure operational framework. Ultimately, this robust system aligns security measures with business objectives, enhancing overall organizational resilience against cyber threats.

Probely is a web security scanner for agile teams. It allows continuous scanning of web applications. It also lets you manage the lifecycle of vulnerabilities found in a clean and intuitive web interface. It also contains simple instructions for fixing the vulnerabilities (including snippets code). Using its full-featured API it can be integrated into development pipelines (SDLC) or continuous integration pipelines, to automate security testing. Probely empowers developers to become more independent. This solves the security team's scaling problem that is often undersized compared to development teams. It provides developers with a tool to make security testing more efficient, which allows security teams to concentrate on more important activities. Probely covers OWASP TOP10, thousands more, and can be used for checking specific PCI-DSS and ISO27001 requirements.

It scans web sites and web apps to identify and analyze security vulnerabilities. Network Scanner identifies and assists in fixing network vulnerabilities. It analyzes the source code to identify and fix security flaws and weak points. This online tool allows you to evaluate your company's compliance with GDPR. Your employees will benefit from this unique learning opportunity and you can avoid the increasing number of phishing attacks. Consulting activity to assist companies with management, control, and risk evaluation.

Detectify sets the standard for External Attack Surface Management (EASM), providing 99.7% accurate vulnerability assessments. ProdSec and AppSec teams trust Detectify to expose exactly how attackers will exploit their Internet-facing applications. Our scanners are built with security findings from 400+ ethical hackers. Their submissions go far beyond the CVE libraries, which are not sufficient to test modern application security.

The YAG Suite is a French-made innovative tool that takes SAST to the next level. YAGAAN is a combination of static analysis and machine-learning. It offers customers more than a sourcecode scanner. It also offers a smart suite to support application security audits and security and privacy through DevSecOps design processes. The YAG-Suite supports developers in understanding the vulnerability causes and consequences. It goes beyond traditional vulnerability detection. Its contextual remediation helps them to quickly fix the problem and improve their secure coding skills. YAG-Suite's unique 'code mining' allows for security investigations of unknown applications. It maps all relevant security mechanisms and provides querying capabilities to search out 0-days and other non-automatically detectable risks. PHP, Java and Python are currently supported. Next languages in roadmap are JS, C and C++.

TrustedSite Security gives you a complete view of your attack surface. The easy-to-use, all in one solution for external cybersecurity monitoring and testing helps thousands of businesses protect their customer data. TrustedSite's agentless and recursive discovery engine finds assets that you aren't aware of so you can prioritize your efforts using one pane-of glass. The central dashboard makes it easy to apply the right resources to any asset, from firewall monitoring to penetration testing. You can also quickly access the specifications of each asset to ensure that everything is being monitored correctly.

Strobes is a one stop shop for security stakeholders to ensure their enterprise is protected against cyber attacks and security issues. From viewing all security threats for each asset in the dashboard, to supporting integrations using leading scanners and bug bounty tool tools, Strobes is your one-stop shop solution.

Regardless of whether you're managing a showcase site, an online store, or a SaaS application, each component will effectively shield your organization from various IT threats: web vulnerability scanner, website monitoring, threat intelligence platform, and web integrity controller. The solutions provided by HTTPCS form a robust defense against cybercriminals. With HTTPCS, you can finally put your mind at ease regarding the safety of your websites and embrace a Secure Attitude. The HTTPCS Cybersecurity Toolkit includes four additional modules designed to protect against hackers every single day of the year. You can monitor your website's response times in real-time, and if there's ever an outage, you'll receive alerts through SMS and email. Our service guarantees a remarkable 99.999% continuity in monitoring, making it more reliable than typical ping solutions. Furthermore, we provide a unique Monitoring scenario system that ensures your sites remain functional for your users, giving them peace of mind as well. By implementing these measures, you will significantly enhance your overall cybersecurity posture.

Protecting your organisation's data and organisation is hard work. Let us help you make it easier The CyberSmart app can be easily installed and provides insight into your current security status. It scans for vulnerabilities and identifies non-conformities according to Cyber Essentials. - The operating system is current - Antivirus and firewall installed - The device has been securely configured We use technology to automate the search to find weaknesses in your system so you don't have to. Your cloud-based dashboard can be used to manage compliance within your organization. You can add new members to your team, check the compliance status for individual devices, and fix issues from within the dashboard.

With VAddy, your development team doesn’t need to possess extensive knowledge in security matters. It simplifies the identification of vulnerabilities, enabling you to address them proactively before they become embedded in your codebase. Integrating seamlessly into your current CI workflow, VAddy operates automatically after each code alteration, notifying you whenever a commit introduces potential vulnerabilities. Many of us have experienced how a vulnerability discovered right before a project’s launch can derail timelines. By consistently conducting thorough security assessments throughout your development phases, VAddy helps mitigate those unexpected disruptions. Additionally, it provides insights into the occurrence of security vulnerabilities linked to specific team members or code modules. This capability allows for the prompt identification of areas needing improvement and fosters knowledge enhancement among developers who may lack strong security awareness. Our diagnostic engine is continuously refined and updated by seasoned security professionals to stay ahead of emerging threats. Consequently, your team can confidently build secure applications without requiring specialized security expertise. This results in a more efficient development process, leading to higher quality software delivery.

Streamline the security evaluation process through the use of hosted vulnerability scanners. This approach encompasses everything from discovering potential attack surfaces to pinpointing vulnerabilities, providing actionable insights for IT and security teams. Actively seek out security flaws by transitioning from attack surface analysis to vulnerability detection. Utilize reliable open-source tools to uncover security gaps and gain access to resources commonly employed by penetration testers and security experts globally. Approach vulnerability hunting from the perspective of potential attackers. By simulating real-world security scenarios, test vulnerabilities and enhance incident response strategies. Uncover the attack surface using both advanced tools and open-source intelligence, ensuring your network enjoys improved visibility. With over one million scans conducted last year alone and our vulnerability scanners operational since 2007, addressing security concerns begins with identification. Correct the vulnerabilities, mitigate the associated risks, and conduct follow-up tests to confirm resolution and effectiveness. Continuous monitoring and reassessment are vital in maintaining a robust security posture.