In-Scope Bug Bounty (or In-Scope Assets)

What Are In-Scope Bug Bounty Assets?

In-scope bug bounty assets (or in-scope targets) are the specific systems, domains, applications, network ranges, and software components that an organization explicitly authorizes security researchers and ethical hackers to test for security vulnerabilities.

In a Bug Bounty Program (BBP) or Vulnerability Disclosure Program (VDP), the scope establishes the operational and legal rules of engagement. Assets defined as "in-scope" are eligible for formal security evaluation and monetary rewards (bounties). Conversely, systems designated as "out-of-scope" are strictly off-limits. Finding vulnerabilities on out-of-scope targets does not qualify for rewards and can violate safe harbor protections or anti-hacking laws (such as the Computer Fraud and Abuse Act).

Primary Types of In-Scope Assets

Organizations specify various digital and physical asset classes within their program scope guidelines:

• Web Applications and Primary Domains: Explicit fully qualified domain names (FQDNs), such as login.example.com or app.example.com.

• Wildcard Domains: Entire domain trees designated by wildcards, such as *.example.com, which include all existing and newly created subdomains under that parent domain.

• Application Programming Interfaces (APIs): REST, GraphQL, or SOAP endpoints (such as api.example.com/v1) that facilitate data exchange for web and mobile frontends.

• Mobile Applications: Specific mobile binaries and package names distributed through official app stores (iOS TestFlight/App Store and Android Google Play Store) or compiled packages (.ipa, .apk).

• IP Address Blocks and CIDR Ranges: Routable public IPv4 or IPv6 network netblocks (e.g., 192.0.2.0/24) hosting external infrastructure and network services.

• Source Code Repositories: Public or semi-private repositories, open-source dependencies, and smart contracts designated for code-level security audits.

• Hardware and IoT Devices: Physical devices, firmware builds, and connected hardware products supplied to researchers for hardware security testing.

Levels of Bug Bounty Scope

Organizations configure the breadth of their in-scope boundaries based on their internal security maturity, triage capacity, and testing objectives:

• Limited Scope: Highly restricted programs focusing exclusively on a single target or a small list of static URLs (e.g., only checkout.example.com). This model is common for teams testing specific new features or those with limited triage resources.

• Wide Scope: Expansive programs that use wildcard designations (e.g., *.example.com) to allow testing across hundreds or thousands of subdomains, staging environments, and regional infrastructure.

• Open Scope: Programs with virtually no perimeter boundaries, often defined as "any public-facing asset owned and operated by the organization." Open scopes maximize coverage by encouraging researchers to discover forgotten shadow IT, legacy servers, and merger-and-acquisition assets.

Why Defining In-Scope Assets Is Critical

Carefully structuring in-scope assets provides distinct technical, legal, and operational benefits:

• Establishing Legal Safe Harbor: Clear scope definitions protect ethical hackers from legal liability under anti-hacking statutes, provided they operate strictly within the authorized targets and testing guidelines.

• Preventing Operational Disruptions: Excluding delicate production databases, internal backbones, or safety-critical infrastructure ensures that researcher testing does not degrade uptime or interrupt core business functions.

• Filtering Third-Party Dependencies: Organizations lack the legal authority to authorize testing on third-party SaaS platforms, cloud providers, or vendor systems. Defining scope explicitly keeps researchers focused only on first-party infrastructure.

• Optimizing Security Budgets: Tying bounty payouts exclusively to designated in-scope assets ensures that financial rewards align with the organization's highest-risk systems and critical business assets.

• Streamlining Triage and Validation: Explicit scopes minimize out-of-scope report noise, allowing internal security teams to validate and remediate critical vulnerabilities more rapidly.

Common Out-of-Scope Exclusions

Bug bounty scopes typically exclude specific targets and vulnerability classes to avoid operational harm and low-value submissions:

• Third-Party Hosted Services: SaaS portals, payment gateways, and hosted help desks not owned directly by the organization.

• Critical Operational Infrastructure: Industrial control systems (ICS), employee workstations, and internal corporate intranets.

• Volumetric Denial of Service (DoS/DDoS): Attacks that intentionally exhaust server bandwidth or system memory to cause service outages.

• Social Engineering and Physical Attacks: Phishing employees, SIM swapping, and physical intrusion attempts against corporate offices or data centers.

• Low-Impact and Non-Exploitable Issues: Theoretical security header omissions (e.g., missing standard CSP or SPF records without demonstrable exploit impact) and automated scanner output dumps.

Frequently Asked Questions

What happens if a security researcher tests an out-of-scope asset?

Testing an out-of-scope asset voids the bug bounty program's safe harbor policy. The researcher will not receive a bounty or reputation points, and their actions may be treated as unauthorized system access, potentially leading to account suspension from the bounty platform or legal action.

What is the difference between an in-scope asset and an in-scope vulnerability?

An in-scope asset is the target system or location (such as a specific domain or mobile app) that may be tested. An in-scope vulnerability is the specific class of security flaw (such as SQL injection, cross-site scripting, or privilege escalation) that the organization agrees to accept and reward on those assets.

How do organizations manage scope expansion safely?

Organizations typically begin with a limited scope or private, invite-only program. As their triage workflows, remediation pipelines, and patch validation mature, they expand to a wide wildcard scope or launch a public, open-scope bounty program.

Operationalizing In-Scope Bug Bounty Asset Management with ThreatNG

Defining and managing in-scope assets for Bug Bounty Programs (BBPs) and Vulnerability Disclosure Programs (VDPs) is essential for modern crowdsourced security. If organizations define their scope too narrowly, they leave unmonitored shadow IT and orphaned cloud infrastructure exposed to real-world adversaries. Conversely, if they define broad or open scopes without continuous discovery and validation, internal security teams can be overwhelmed by low-quality submissions, false positives, and disputes over out-of-scope reports.

ThreatNG operationalizes in-scope bug bounty management by serving as an unauthenticated external scout. Unifying External Attack Surface Management (EASM), Digital Risk Protection (DRP), and continuous Security Ratings into a single platform, ThreatNG discovers, evaluates, verifies, and monitors an enterprise’s complete public digital footprint from an outside-in perspective. It provides the empirical asset baseline required to define accurate bounty scopes, validate submitted findings, and close security gaps before ethical hackers or malicious actors encounter them—all without requiring internal software agents, API access keys, or administrative credentials.

External Discovery

A successful bug bounty program requires an accurate, dynamic inventory of all public-facing assets to determine what should be authorized for testing versus what must remain off-limits. ThreatNG achieves complete perimeter visibility through connectorless external discovery.

• Connectorless Asset and Perimeter Mapping: ThreatNG performs pure outside-in discovery using zero internal connectors or software agents. It scans public domain registries, DNS zone files, SSL/TLS certificate transparency logs, and global routing databases to build an accurate inventory of public IP blocks, subdomains, cloud environments, and mobile binaries across the organization.

• Uncovering Shadow IT and Forgotten Environments: Decentralized engineering teams frequently launch staging servers, promotional microsites, and development subdomains that bypass central security inventories. ThreatNG continuously tracks global domain registrations and DNS changes to catalog these unmonitored assets, allowing security managers to either add them to the bounty scope for testing or take them offline immediately.

• Supply Chain and Third-Party Discovery: Because ThreatNG requires no internal permissions or vendor access, it executes unauthenticated discovery across third-party suppliers, digital partners, and acquisition targets. This clarifies ownership boundaries, preventing organizations from accidentally including third-party-hosted services in the bug bounty scope when they lack the legal authority to authorize testing.

External Assessment

ThreatNG elevates asset evaluation from static inventory lists to deterministic, evidence-backed risk validation using its Known Vulnerability Exposure Verification (KVEV) engine, proprietary Security Ratings, and 4-Dimensional (4D) Data Model. The 4D model cross-references National Vulnerability Database (NVD) baselines, 30-day Exploit Prediction Scoring System (EPSS) probabilities, CISA Known Exploited Vulnerabilities (KEV) listings, and verified Proof-of-Concept (PoC) exploit code in DarCache eXploit.

• Detailed Assessment Example 1: Pre-Bounty Subdomain Takeover Susceptibility Verification: ThreatNG inspects all discovered subdomains for dangling CNAME records pointing to decommissioned third-party cloud hosting services. It cross-references hostnames against an extensive cloud vendor catalog and calculates Subdomain Takeover Susceptibility. This enables security teams to identify and delete dangling DNS records before bug bounty researchers report them, eliminating avoidable bounty payouts for simple routing oversights.

• Detailed Assessment Example 2: Known Vulnerability Exposure Verification (KVEV): When evaluating assets for bounty inclusion, the KVEV engine performs live, unauthenticated checks against exposed services to confirm public reachability and check for CISA KEV listings and active PoC exploit code. This helps security teams fix known, high-probability CVEs internally before publishing a wide bounty scope to crowdsourced researchers.

• Detailed Assessment Example 3: Web Application Control and Hijack Susceptibility: ThreatNG inspects public application endpoints across subdomains for missing or weak HTTP security headers (such as Content-Security-Policy, HSTS, and X-Frame-Options). It generates an A-F Web Application Hijack Susceptibility rating to establish an objective security baseline across in-scope web properties.

• Detailed Assessment Example 4: Mobile Application Exposure and Secrets Content Scanning: ThreatNG discovers an organization's mobile applications across public app stores and performs deep content scanning on compiled packages. It flags hardcoded API keys, database connection strings, and outdated third-party libraries, allowing security teams to remediate exposed secrets before researchers submit them for rewards.

Strategic Reporting

ThreatNG standardizes the communication of external asset posture and vulnerability data by converting raw technical telemetry into clear, auditable records for bug bounty managers, engineering leads, and executive leadership.

• Asset Scope Documentation and Technical Inventory: ThreatNG produces structured technical inventories detailing all verified FQDNs, active IP blocks, cloud buckets, and mobile packages. Security teams use these reports as the authoritative baseline when drafting or updating program scope documents on bug bounty platforms.

• Executive Security Ratings Reports: ThreatNG converts complex asset and vulnerability data into high-level A-F security ratings. This enables CISOs to track improvements in external posture over time and demonstrate how bug bounty programs and external attack surface management work together to reduce technical debt.

• Forensic Evidence Packages: When ThreatNG verifies a critical exposure or an unauthorized lookalike domain, it generates a detailed forensic evidence package containing technical markers, DNS resolution histories, affected URLs, and proof of ownership. Security teams use these evidence packages to rapidly triage researcher submissions or execute domain takedowns.

Continuous Monitoring

Because cloud environments and codebases change continuously, static scope definitions quickly become outdated. ThreatNG provides 24/7 continuous external surveillance across the extended digital footprint, tracking asset state changes, newly registered subdomains, modified DNS records, and emerging zero-day vulnerabilities in real time. Furthermore, ThreatNG incorporates its Overwatch capability—a cross-entity vulnerability intelligence system that instantly evaluates exposure across an entire portfolio of business units and subsidiaries whenever a new zero-day CVE is disclosed, allowing teams to update bounty scopes or execute emergency patching immediately.

Investigation Modules

ThreatNG features specialized investigation modules that allow security teams to deeply interrogate external assets, validate bug bounty submissions, and map complex exploit paths.

• Detailed Module Example 1: Subdomain Intelligence Module: This module provides granular analysis of web server configurations across subdomains. It catalogs HTTP and HTTPS status codes (100–599) and performs deep Header Analysis, evaluating server headers and redirect chains. When a researcher submits a report on an obscure subdomain, analysts use this module to instantly verify server ownership, active response codes, and infrastructure details.

• Detailed Module Example 2: Sensitive Code Exposure Module: ThreatNG continuously monitors public code repositories (such as GitHub, GitLab, and Bitbucket) and paste sites for leaked corporate secrets. This module uncovers hardcoded API keys, private SSH keys, and internal URLs committed by developers, allowing teams to remediate leaked credentials before researchers find them.

• Detailed Module Example 3: The DarChain Exploit Path Mapping Engine: DarChain (Digital Attack Risk Contextual Hyper-Analysis Insights Narrative) constructs multi-step attack paths showing how adversaries exploit external gaps. For example, DarChain maps how an attacker identifies an unmonitored staging subdomain within a wildcard bounty scope, connects that finding to leaked credentials on the dark web, and moves laterally toward internal APIs, helping teams understand the full risk context of a reported bug.

• Detailed Module Example 4: SaaS Discovery (SaaSqwatch) and Domain Intelligence: SaaSqwatch identifies externally accessible SaaS applications to ensure third-party tools are excluded from bounty scopes, while the Domain Intelligence module evaluates DNS records, WHOIS data, and domain name permutations to maintain clear boundaries between corporate assets and lookalike domains.

• Detailed Module Example 5: Cybersecurity AI Prompts (DarcPrompt): DarcPrompt packages verified external threat context into structured prompt blueprints. Through an Air-Gapped Handoff, security analysts safely copy these blueprints into their internal private enterprise AI systems to draft scope definitions, generate triage validation scripts, and create developer remediation guides without exposing sensitive asset data to public AI services.

Intelligence Repositories

ThreatNG grounds its asset evaluations and crowdsourced vulnerability tracking in empirical threat telemetry using the DarCache intelligence engine.

• DarCache Bug Bounty: ThreatNG maintains a dedicated Bug Bounty Intelligence Repository that aggregates, analyzes, and tracks historical and active bug bounty program disclosures, community-reported exploit trends, researcher targeting patterns, and high-frequency vulnerability vectors across public disclosure ecosystems. This intelligence provides security teams with an empirical understanding of the specific asset types and vulnerability classes crowdsourced researchers target most aggressively, helping organizations proactively harden in-scope assets.

• DarCache Vulnerability & eXploit: Integrates NVD baselines, CISA KEV listings, 30-day EPSS probabilities, and verified PoC exploit pointers to separate theoretical bugs from actively weaponized CVEs on in-scope assets.

• DarCache Dark Web & Rupture: Continuously tracks compromised corporate credentials, session cookies, and infostealer logs across all domain permutations, identifying exposed identities associated with in-scope portals.

• DarCache Ransomware: Tracks over 70 active ransomware cartels and their specific tactics, techniques, and procedures (TTPs), monitoring threat actor targeting patterns directly against an organization's external footprint.

Cooperation with Complementary Solutions

ThreatNG functions as an external intelligence engine that cooperates seamlessly with complementary solutions across the enterprise security ecosystem.

• Cooperation with Bug Bounty and Vulnerability Disclosure Platforms: ThreatNG pushes accurate asset inventories, discovered subdomains, ownership verification data, and DarCache Bug Bounty intelligence into complementary solutions. Bounty managers use this continuous feed to dynamically update in-scope wildcard lists, align bounty incentives with trending exploit techniques, and automatically filter out invalid or out-of-scope researcher submissions.

• Cooperation with Security Orchestration, Automation, and Response (SOAR): ThreatNG delivers pre-correlated Context Objects and DarChain attack paths to complementary solutions via an API. When a researcher report or ThreatNG discovery confirms a critical vulnerability on an in-scope asset, the SOAR platform automatically triggers remediation playbooks, such as opening priority Jira tickets or applying temporary firewall rules.

• Cooperation with Vulnerability Management and Internal Scanners: ThreatNG shares real-world external asset inventories and verified entry points with complementary solutions. Correlating outside-in discovery data with internal vulnerability scanner results helps security teams eliminate scan blind spots and prioritize testing on critical in-scope applications.

• Cooperation with Security Information and Event Management (SIEM): ThreatNG feeds real-time external asset discoveries and threat indicators into complementary solutions. SOC analysts correlate internal network logs and web traffic against active bug bounty testing traffic to distinguish between authorized ethical hacking and unauthorized adversary reconnaissance.

Examples of ThreatNG Helping Organizations

• Optimizing Bug Bounty Scope and Eliminating Noise: An enterprise launching a new bug bounty program used ThreatNG to audit its public perimeter before finalizing the scope. ThreatNG discovered several unmonitored staging subdomains with dangling CNAME records and multiple legacy servers running outdated software. By identifying and fixing these issues prior to program launch, the organization prevented hundreds of duplicate, low-value researcher submissions and saved substantial bounty payout costs.

• Rapidly Triaging and Validating Submitted Vulnerabilities: A financial institution received a bug bounty submission claiming an open redirect vulnerability on an unlisted subdomain. Using ThreatNG's Subdomain Intelligence and IP Intelligence modules, security analysts quickly verified domain ownership, checked the server banner, traced the HTTP redirect chain, and confirmed the issue in minutes without deploying manual network probes.

Examples of ThreatNG Working with Complementary Solutions

• Working with Bug Bounty Platforms and SOAR to Automate Scope Hygiene: ThreatNG discovers a newly provisioned cloud marketing portal and passes the asset metadata to complementary solutions (SOAR). The SOAR system evaluates the domain and automatically pushes the verified URL into complementary solutions (bug bounty platforms) to add it to the active in-scope testing target list.

• Working with SIEM and Vulnerability Scanners to Monitor In-Scope Assets: ThreatNG detects an exposed administrative interface within an in-scope IP range. It passes this entry point marker to complementary solutions (vulnerability scanners) for authenticated security testing while feeding the endpoint details to complementary solutions (SIEM) to monitor for unauthorized brute-force attempts from external IPs.

Frequently Asked Questions

What is the role of the DarCache Bug Bounty repository in ThreatNG?

DarCache Bug Bounty is ThreatNG's specialized intelligence repository that tracks historical bug bounty disclosures, researcher activity trends, and crowdsourced exploit patterns, providing security teams with data-driven insights to proactively secure the assets and vulnerability classes most commonly targeted by ethical researchers.

How does ThreatNG assist in defining bug bounty scopes without internal network access?

ThreatNG operates entirely as an unauthenticated external scout. It analyzes public domain registries, DNS zone files, SSL/TLS certificate logs, and cloud routing databases across the open internet to map all public assets, subdomains, and IP ranges, providing an accurate baseline of what should be included in or excluded from the bounty scope.

How does ThreatNG cooperate with complementary bug bounty platforms?

ThreatNG acts as an external intelligence engine that pushes verified asset inventories, discovered subdomains, and ownership context directly into complementary solutions like crowdsourced bounty platforms, SOAR systems, and SIEMs, enabling dynamic scope updates, automated triage verification, and accelerated remediation.