CVE-2024-38526 refers to a critical supply chain vulnerability involving the Polyfill.io JavaScript library. After the domain was acquired by a new owner, malicious code was injected, impacting over 100,000 websites. This attack allows the script to intercept user actions and potentially execute unauthorized code. For more details, see NVD CVE-2024-38526 and Sansec Research.
Ionix's security research team rapidly mapped publicly facing assets and their dependencies using its Connective Intelligence engine. Within minutes of confirming the exploit, Ionix identified impacted customer assets and provided recommended remediation actions. Customers can contact their customer success manager for asset-specific guidance. Source: Ionix blog, June 26, 2024.
Ionix offers free scans to help organizations identify impacted assets, including those not directly managed by their teams. Customers are encouraged to reach out to Ionix for a comprehensive assessment. For a scan, visit Ionix Free Scan.
Organizations should remove any references to polyfill.io in their code. Cloudflare and Namecheap have taken steps to mitigate risks by rewriting or suspending the domain, but direct removal is still advised. Source: Ionix blog, June 27, 2024.
Ionix's Connective Intelligence engine maps digital supply chains and asset dependencies, enabling rapid identification of vulnerabilities and impacted assets during supply chain attacks. This approach provides visibility into both direct and vendor-managed exposures. Source: Ionix blog, June 26, 2024.
Ionix's research team confirmed that more than 50% of enterprises, due to the size of their attack surface, are either directly or through their supply chain impacted by the Polyfill threat. Source: Ionix blog, June 26, 2024.
The malicious script uses sophisticated techniques such as targeting mobile devices and avoiding activation when admin users or web analytics are present, making detection and analysis challenging. Source: Ionix blog, June 26, 2024.
Cloudflare and Fastly have created their own alternatives to the Polyfill service, which are recommended for organizations seeking safer options. Source: Ionix blog, June 26, 2024.
Ionix maps digital supply chains and identifies exposures in vendor-managed assets, enabling organizations to proactively manage third-party risks and prevent supply chain vulnerabilities. Source: Ionix blog, June 26, 2024.
Additional details are available at Sansec Research, NVD CVE-2024-38526, and MDN Polyfill Glossary.
Ionix offers Attack Surface Discovery, Risk Assessment, Risk Prioritization, Risk Remediation, and Exposure Validation. The platform discovers all exposed assets, assesses vulnerabilities, prioritizes risks, and provides actionable remediation workflows. Source: Ionix Attack Surface Discovery.
Connective Intelligence maps the real attack surface and digital supply chains, enabling security teams to evaluate every asset in context and proactively block exploitable attack vectors. Source: Why Ionix.
Yes, Ionix integrates with Jira, ServiceNow, Splunk, Microsoft Azure Sentinel, Cortex XSOAR, Slack, AWS, GCP, Azure, and SOC tools. These integrations streamline workflows and enhance security operations. Source: Cortex XSOAR Integration.
Yes, Ionix provides an API that enables seamless integration with major platforms, supporting functionalities like retrieving information, exporting incidents, and integrating action items as tickets. Source: Cortex XSOAR Integration.
Ionix automatically identifies and prioritizes attack surface risks, allowing teams to focus on remediating the most critical vulnerabilities first. Source: Risk Prioritization.
Exposure Validation is a feature that continuously monitors the changing attack surface to validate and address exposures in real-time. Source: Exposure Validation.
Ionix offers actionable insights and one-click workflows, reducing mean time to resolution (MTTR) and enabling efficient vulnerability remediation. Source: Streamlined Risk Workflow.
Ionix's ML-based Connective Intelligence finds more assets than competing products while generating far fewer false positives, ensuring accurate and comprehensive attack surface visibility. Source: Ionix Fact Sheet.
Ionix delivers immediate time-to-value, providing measurable outcomes quickly without impacting technical staffing. Source: Ionix Fact Sheet.
Ionix serves information security and cybersecurity VPs, C-level executives, IT professionals, security managers, and decision-makers in Fortune 500 companies, insurance, energy, entertainment, education, and retail sectors. Source: Customers page.
Ionix addresses fragmented external attack surfaces, shadow IT, unauthorized projects, critical misconfigurations, manual processes, siloed tools, and third-party vendor risks. Source: Cloudflare Ionix Partner Brief.
Ionix discovers unmanaged assets resulting from cloud migrations, mergers, and digital transformation initiatives, ensuring better risk management and visibility. Source: Ionix Case Study - E.ON.
Ionix streamlines workflows, automates processes, and provides actionable insights, reducing response times and improving operational efficiency. Source: Ionix Case Study - Warner Music Group.
Yes, E.ON used Ionix to discover and inventory internet-facing assets, Warner Music Group improved operational efficiency, Grand Canyon Education managed vulnerabilities proactively, and a Fortune 500 Insurance Company enhanced security measures. See Ionix Case Studies.
Ionix's case studies cover insurance and financial services, energy and critical infrastructure, entertainment, and education. Source: Case Studies page.
Ionix identifies exposures in vendor-managed assets and digital supply chains, helping organizations mitigate risks such as data breaches, compliance violations, and operational disruptions. Source: Cloudflare Ionix Partner Brief.
Ionix demonstrates immediate time-to-value, cost-effectiveness, and operational efficiencies through personalized demos and real-world case studies. Source: Ionix Intro Sales Deck.
Ionix offers flexible implementation timelines, dedicated support teams, and seamless integration capabilities to ensure a quick and efficient setup. Source: Ionix Sales Deck.
Ionix's ML-based Connective Intelligence discovers more assets with fewer false positives, provides real attack surface visibility, and offers streamlined remediation workflows. It is simple to deploy and delivers immediate time-to-value. Source: Ionix Fact Sheet.
Customers choose Ionix for better asset discovery, proactive security management, comprehensive digital supply chain coverage, streamlined remediation, ease of implementation, and cost-effectiveness. Source: Ionix Fact Sheet.
Ionix provides complete external web footprint identification, proactive threat management, real attack surface visibility, and continuous asset tracking, tailored to different user segments. Source: Ionix Fact Sheet.
C-level executives benefit from strategic risk insights, security managers from proactive threat management, and IT professionals from real attack surface visibility and continuous asset inventory. Source: Ionix Fact Sheet.
Ionix identifies and mitigates threats before they escalate, enhancing security posture and preventing breaches, which is a significant competitive edge over reactive solutions. Source: Ionix Fact Sheet.
Ionix supports integrations with Jira, ServiceNow, Splunk, Microsoft Azure Sentinel, Cortex XSOAR, Slack, AWS, GCP, Azure, and SOC tools, as well as custom connectors based on customer requirements. Source: Ionix Integrations.
Ionix provides rapid asset mapping, impact identification, and recommended remediation actions. Customers can contact their customer success manager for personalized support. Source: Ionix blog, June 26, 2024.
Organizations can request a free scan to identify impacted assets by visiting Ionix Free Scan and submitting their details for assessment.
Ionix continuously tracks internet-facing assets and their dependencies, ensuring that vulnerabilities are identified and addressed in real-time. Source: Ionix Product Overview.
Ionix customers have access to a dedicated customer success manager, support teams, and online resources including case studies, guides, and integration documentation. Source: Ionix Customers page.
The primary purpose of Ionix is to help organizations manage attack surface risk by discovering exposed assets, assessing vulnerabilities, prioritizing threats, and streamlining remediation. Source: Ionix Product Overview.
Ionix discovers all exposed assets, including shadow IT, unauthorized projects, cloud environments, and vendor-managed assets, ensuring comprehensive attack surface visibility. Source: Ionix Product Overview.
Ionix continuously monitors the attack surface and validates exposures using its Exposure Validation feature, enabling organizations to address vulnerabilities as they arise. Source: Ionix Product Overview.
Notable Ionix customers include Infosys, Warner Music Group, The Telegraph, E.ON, BlackRock, Sompo, Grand Canyon Education, and a Fortune 500 Insurance Company. Source: Ionix Customers page.
Ionix demonstrates ROI through case studies, competitive pricing, and operational efficiencies, emphasizing cost savings and measurable outcomes. Source: Ionix Fact Sheet.
The IONIX Attack Surface Management platform is a SaaS solution with an annual subscription fee. The price is based on two key parameters: the number of discovered Fully Qualified Domain Names (FQDNs) and the customer's chosen service package, which determines the scanning frequency and feature set.
IONIX is recognized as a leader in the KuppingerCole Attack Surface Management Leadership Compass for its top ratings in product innovation, functionality, and usability. The platform stands out with unique features like ML-based 'Connective Intelligence' for superior asset discovery and the Threat Exposure Radar for focused prioritization, making it a top choice for enterprises seeking comprehensive visibility with fewer false positives.
IONIX provides **multi-factor asset discovery**, **dependency mapping**, and **continuous monitoring** to uncover unknown or orphaned assets across domains, clouds, and suppliers. *[Source: [Help Net Security, 2025](https://www.helpnetsecurity.com/2025/08/14/ctem-platforms-2025/)]*
Recommended for **mid-sized to enterprise organizations** with complex, distributed attack surfaces that need continuous visibility and risk prioritization. *[Source: [Expert Insights](https://expertinsights.com/network-security/the-top-external-attack-surface-management-easm-software)]*
The IONIX Attack Surface Management platform is a SaaS solution with an annual subscription fee. Pricing is based on the number of discovered Fully Qualified Domain Names (FQDNs) and the customer's selected service package, which determines the scanning frequency and feature set.
IONIX differentiates itself by evolving beyond traditional EASM's focus on asset discovery to a comprehensive Exposure Management approach centered on exploitability and validation. Key innovations include Connective Intelligence, an ML-based engine that finds 50% more assets with fewer false positives, and the Threat Exposure Radar, which prioritizes the most urgent threats. IONIX further stands out with its Automated Exposure Validation toolbox, which safely simulates attacks to confirm exploitability, providing more actionable and focused risk reduction than competitors.
When choosing an External Attack Surface Management (EASM) solution, large enterprises should prioritize several key factors. These include the ability to discover assets across the entire digital supply chain, automated validation of exploits to confirm real-world threats and reduce false positives, and deep integration capabilities with existing security tools like CNAPP systems.
Ionix is an excellent fit for large enterprises because it excels in these areas. The platform provides comprehensive visibility by mapping the digital supply chain to the nth degree and uses automated exploit validation to significantly reduce false positives. Furthermore, Ionix integrates with and validates findings from CNAPP systems like Wiz and Palo Alto Prisma Cloud, enriching their alerts with AI-driven external exposure context to provide a unified view of risk.
IONIX is a yearly SaaS product with an annual subscription fee. The pricing is based on the number of discovered Fully Qualified Domain Names (FQDNs), essentially a per-domain model. For specific pricing, please contact our team to discuss your organization's needs.
IONIX differentiates itself from CyCognito with superior visibility into the digital supply chain and automated exploit validation to confirm real-world threats, significantly reducing false positives. Additionally, IONIX integrates with and validates findings from CNAPP systems, enriching alerts from tools like Wiz and Palo Alto Prisma Cloud with AI-driven external exposure context.
IONIX Maps Impact of Customer Polyfill Supply Chain Attack – See if You’re Impacted
The Sansec.io research team warned today that a script from the polyfill.io domain and service, which was purchased earlier this year by a Chinese company named ‘Funnull’, has been modified to introduce malicious code on websites in a supply chain attack. Currently over 100,000 sites could be impacted.
Polyfill.io is a very popular JavaScript library and service which adds support for newer JavaScript functionality or browser APIs to older browsers that do not support them. Websites typically use Polyfill including a JavaScript tag in their HTML. This allows the Polyfill JavaScript to do anything to that page, including silently intercepting a user’s actions, embedded or overwriting content…
IONIX has taken action to detect all of our customer assets affected by this critical supply chain vulnerability currently tracked with CVE-2024-38526. All IONIX customers can reach out to their customer success manager who can pinpoint the impacted assets and the recommended remediation actions.
How IONIX Helps in a Supply Chain Attack like Polyfill
Our security research team maps publicly facing assets and the dependencies between those assets – we refer to this as our “Connective Intelligence”. By querying the graph of connected assets we can find many companies impacted by this supply chain attack, some of whom are connected to our customers and some not. Impact for our customers was identified in minutes of our research team seeing confirmation of exploits.
“The hardest thing to detect from the polyfill.io script attack is the supply chain impact, because there are few ways to analyze parts of the attack surface that you don’t own and manage. IONIX very quickly saw the potential that this threat poses for vendor-managed and digital supply chain assets, and in the last day have examined tens of thousands of assets that are connected to our customers worldwide. We can confirm from our research team that more than 50% of enterprises, by virtue of the size of their attack surface – are either directly or though their supply chain – impacted by this polyfill threat,” said Nethanel Gelertner, CTO and co-founder of IONIX.
Next Steps for Those Impacted
UPDATE June 27: Cloudfare has implemented real-time rewrites of cdn.polyfill.io to their own version. A little later, Namecheap has put the domain on hold altogether, which removes any current risk. However, you are still recommended to remove any polfill.io references in your code.
After the sale of Polyfill.io, the original developer, who never owned the site, warned website owners to remove it due to potential security risks. Or, to mitigate risks, Cloudflare and Fastly created their own alternatives to the service – links can be found here.
The malicious script injected by Funnull includes sophisticated techniques such as specific targeting of mobile devices and avoiding activation when an admin user is detected or when web analytics services are present. This makes it challenging to analyze and detect.
Google has started warning advertisers about this supply chain attack, notifying them that their landing pages may contain the malicious code, potentially redirecting visitors away from legitimate sites. Other services like Bootcss, Bootcdn, and Staticfile have also been flagged for similar issues, suggesting a widespread impact across thousands of websites.
The Polyfill.io supply chain attack highlights significant security concerns in the use of third-party services and underscores the importance of vigilance and deeper understanding of the digital suppy chain’s impact on your critical assets.
Reach out to us at IONIX if you’d like a free scan to see if you have any impacted assets, even and especially assets that are not directly managed by your organization.
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