Map your attack surface before adversaries do.
Continuously discover, inventory, and monitor every internet-facing asset tied to your organization. intelsieve automates external asset discovery, port scanning, vulnerability detection, and certificate monitoring — giving your security team a real-time view of your external risk posture.
Comprehensive Attack Surface Visibility
Six core capabilities that give your security team complete visibility into your external attack surface — from asset discovery to continuous vulnerability monitoring.
External Asset Discovery
Automatically discover all internet-facing assets tied to your organization — including forgotten subdomains, shadow IT, cloud instances, and third-party services. Our crawlers map your full external footprint so nothing hides in the blind spots.
Port & Service Scanning
Continuously scan your external assets for open ports, running services, and exposed protocols. Identify unintended exposures like open databases, admin panels, and development endpoints before threat actors exploit them.
Vulnerability Detection
Detect known CVEs, misconfigurations, and security weaknesses across your internet-facing infrastructure. Our scanning engine correlates discovered services with vulnerability databases to prioritize the exposures that matter most to your organization.
Certificate Monitoring
Track SSL/TLS certificates across all your domains and subdomains. Get alerted before certificates expire, detect certificate transparency log anomalies, and catch unauthorized certificate issuances that could indicate domain hijacking or man-in-the-middle attacks.
DNS Misconfiguration Detection
Identify dangling DNS records, subdomain takeover risks, SPF/DKIM/DMARC misconfigurations, and zone transfer vulnerabilities. Misconfigured DNS is one of the most common and overlooked attack vectors — our engine catches issues before they become breaches.
Subdomain Enumeration
Recursively discover subdomains using passive DNS records, certificate transparency logs, brute-force techniques, and web crawling. Surface forgotten dev, staging, and test environments that are often left unpatched and publicly accessible.
How It Works
Get from zero to full attack surface visibility in three steps. No agents to install, no firewall changes, no network access required.
Configure Your Assets
Add your root domains, IP ranges, and cloud provider accounts. intelsieve automatically expands your seed list by discovering related assets, subdomains, and internet-facing infrastructure tied to your organization.
Continuous Scanning
Our scanners run on configurable schedules — daily, weekly, or on-demand. Every scan inventories your assets, checks for open ports and services, detects vulnerabilities, and monitors certificates and DNS records for changes.
Get Alerted
Receive real-time alerts via Slack, email, or webhooks when new assets appear, vulnerabilities are detected, certificates are about to expire, or DNS misconfigurations are found. Integrate with Splunk, Elastic, or any SIEM for centralized visibility.
Use Cases by Industry
Attack surface management is critical across every industry. Here's how organizations in different verticals use intelsieve to reduce external risk.
Financial Services
Banks, fintechs, and insurance companies manage sprawling digital footprints with hundreds of customer-facing applications. ASM helps financial institutions satisfy regulatory requirements (PCI DSS, SOC 2, DORA) by maintaining a continuously updated inventory of external assets and detecting exposures that could lead to data breaches or fraud.
- PCI DSS & SOC 2 compliance support
- API endpoint discovery
- Third-party fintech asset tracking
SaaS & Technology
Fast-moving engineering teams spin up cloud infrastructure daily. Ephemeral environments, microservices, and multi-cloud deployments create an ever-changing attack surface. intelsieve gives SaaS companies continuous visibility into every exposed asset — from staging servers to forgotten S3 buckets — without slowing down development velocity.
- Multi-cloud asset discovery (AWS, GCP, Azure)
- CI/CD and staging environment monitoring
- Shadow IT and rogue service detection
Healthcare
Healthcare organizations handle sensitive patient data across distributed networks of hospitals, clinics, and connected medical devices. Attack surface management helps healthcare providers identify exposed DICOM servers, unpatched patient portals, and misconfigured telehealth endpoints — reducing risk of HIPAA violations and ransomware attacks.
- HIPAA compliance risk reduction
- Connected medical device discovery
- Patient portal exposure monitoring
Government & Public Sector
Government agencies operate complex, multi-agency digital ecosystems with strict compliance mandates. intelsieve ASM provides a unified view of externally exposed assets across departments, helping agencies meet BOD 23-01 requirements and CISA directives for asset visibility and vulnerability management.
- BOD 23-01 & CISA directive compliance
- Cross-agency asset visibility
- Controlled unclassified information (CUI) exposure detection
Frequently Asked Questions
What is attack surface management (ASM)?
Attack surface management is the continuous process of discovering, inventorying, classifying, and monitoring all external-facing digital assets that belong to an organization. This includes domains, subdomains, IP addresses, cloud resources, APIs, certificates, and any other internet-accessible infrastructure. ASM helps security teams understand their full external footprint and identify exposures before adversaries can exploit them.
How does intelsieve discover external assets?
intelsieve uses a combination of passive and active reconnaissance techniques to map your external attack surface. This includes DNS enumeration, certificate transparency log analysis, web crawling, WHOIS data correlation, passive DNS databases, port scanning, and cloud provider API integration. You provide seed domains or IP ranges, and our engine recursively expands the asset inventory from there.
How often does intelsieve scan my attack surface?
Scan frequency depends on your plan. Standard plans include weekly scans, while Enterprise plans support daily and on-demand scanning. Regardless of plan, our certificate monitoring and DNS change detection run continuously. You can also trigger ad-hoc scans at any time through the dashboard or API.
What is the difference between ASM and vulnerability management?
Traditional vulnerability management focuses on scanning known, inventoried assets for known CVEs. Attack surface management starts a step earlier — it discovers assets you may not even know about (shadow IT, forgotten subdomains, rogue cloud instances) and then assesses them for exposures. ASM answers the question 'What do I have exposed?' while vulnerability management answers 'What's wrong with what I know about?' intelsieve combines both capabilities in a single platform.
Can intelsieve integrate with my existing security tools?
Yes. intelsieve integrates with major SIEMs (Splunk, Elastic, Microsoft Sentinel), ticketing systems (Jira, ServiceNow), and communication platforms (Slack, Microsoft Teams, PagerDuty). We also provide a full REST API with SDKs for Python, JavaScript, and Go, so you can build custom workflows and pipe ASM findings into any tool in your security stack.
How does intelsieve handle false positives in asset discovery?
Our discovery engine uses multi-source correlation to validate asset ownership. We cross-reference DNS records, WHOIS data, certificate subjects, HTTP response headers, and cloud provider metadata to confirm that discovered assets actually belong to your organization. You can also manually confirm or dismiss assets in the dashboard, and the system learns from your feedback to improve accuracy over time.
Start mapping your attack surface today.
Join security teams that use intelsieve to continuously discover and monitor their external assets. Get full attack surface visibility in under 5 minutes — no agents, no firewall changes, no credit card required.
No credit card required. 14-day free trial on all plans.