Full Report
Learn how security leaders defend against risks to their first- and third-party attack surfaces.
Analysis Summary
# Best Practices: Proactive Attack Surface Management and Threat Intelligence Integration
## Overview
These practices focus on proactively managing and reducing organizational risk across the expanding attack surface, encompassing first-party assets, employee identities, and third-party vendors. The core strategy is to combine comprehensive visibility across these domains with contextual threat intelligence to enable rapid, informed decision-making and remediation.
## Key Recommendations
### Immediate Actions
1. **Monitor for Compromised Credentials Exposure:** Implement a system to continuously monitor external sources (e.g., dark web marketplaces) for organizational employee credentials.
2. **Automate Initial Credential Response:** Establish automation to immediately reset or invalidate any discovered compromised credentials to prevent threat actors from logging in.
3. **Prioritize Known Exploited Vulnerabilities (KEV):** Immediately identify and apply remediation or compensating controls for all vulnerabilities classified under recognized KEV lists (e.g., CISA KEVs).
### Short-term Improvements (1-3 months)
1. **Establish Continuous External Asset Inventory:** Deploy tools capable of continuously discovering, mapping, and inventorying all internet-facing assets belonging to the organization (shadow IT must be included).
2. **Align Attack Surface Visibility with Threat Context:** Integrate external asset discovery data with threat intelligence to prioritize identified findings based on potential exploitability or active targeting.
3. **Formalize Vendor Security Review Thresholds:** Define clear security hygiene standards for critical third-party vendors and integrate intelligence feeds to monitor their security posture continuously.
### Long-term Strategy (3+ months)
1. **Implement Attack Surface Reduction Strategy:** Focus efforts on risk reduction by decommissioning or moving assets off the public internet where they provide no business value ("If it can’t be on the internet. Great. Let’s get it off there.").
2. **Develop Intelligence-Driven Incident Response Playbooks:** Create formalized, intelligence-led response playbooks for high-risk scenarios, such as exploitation of zero-day vulnerabilities or widespread credential leaks.
3. **Integrate Contextual Intelligence into Patch Management Cadence:** Ensure vulnerability patching prioritization is strictly governed by actionable intelligence detailing active exploitation in the wild, moving beyond simple CVSS scores or discovery dates.
## Implementation Guidance
### For Small Organizations
- **Focus on Identity First:** Since stolen credentials are cheap and common, prioritize quick setup of multi-factor authentication (MFA) company-wide and leverage free or low-cost feeds to scan for leaked employee credentials regularly.
- **External Asset Baseline:** Conduct an initial, manual or low-cost scan to map out the current external footprint. Focus initial remediation only on the top 10 most critical/oldest identified assets.
- **Vendor Triage:** Identify the top 3 most critical supply chain partners and require annual security attestations; use intelligence to monitor these specific vendors only.
### For Medium Organizations
- **Automate Asset Discovery Gaps:** Invest in an Attack Surface Management (ASM) solution to automate the continuous mapping of the first-party external attack surface, aiming to eliminate the "unknown unknowns."
- **Resource Allocation:** Reallocate security analyst time freed up by automated credential response to focus on deeper threat hunting and strategic risk reduction projects (e.g., decommissioning legacy services).
- **Contextual Vulnerability Prioritization:** Formally adopt a risk prioritization matrix that weights active exploitation (e.g., presence in threat actor tooling or known in-the-wild exploitation) over simple vulnerability severity scores.
### For Large Enterprises
- **Full-Spectrum Intelligence Integration:** Implement professional intelligence platforms ($$ highly recommended to automate identification of stolen credentials, internet-facing assets, and supply chain risks).
- **Centralized Risk Dashboard:** Create a unified view combining Identity Intelligence, Attack Surface Intelligence, and Vulnerability Intelligence for executive-level reporting and centralized decision-making.
- **Systemic Reduction Programs:** Launch structured, ongoing programs dedicated solely to technical debt reduction of internet-facing infrastructure and reducing the overall external footprint.
## Configuration Examples
* **Credential Remediation Automation Logic:**
* **Trigger:** Identity Intelligence module alerts on organizational email address/password pair found in exposed data sets.
* **Action (within 15 minutes):** Force a company-wide password reset for the affected user account and temporarily suspend access until the user verifies identity via an out-of-band channel (e.g., secure phone call).
* **Vulnerability Prioritization Logic:**
* **Condition 1:** Asset has a known vulnerability (e.g., CVE-XXXX-XXXX).
* **Condition 2 (Contextual Layer):** Intelligence indicates a Proof-of-Concept (PoC) exists *AND* threat actors are actively exploiting this CVE in the wild, *OR* the asset is critical infrastructure.
* **Result:** Escalate to P1 Remediation (<48 hours), even if CVSS score is below organizational standard threshold.
## Compliance Alignment
- **NIST Cybersecurity Framework (CSF):**
* **Identify (ID):** Focuses directly on mapping assets and understanding risk (ID.AM, ID.RA).
* **Protect (PR):** Implementing strong identity protections and access controls (PR.AC, PR.PT).
* **Detect (DE):** Continuous monitoring supports timely detection of exposure and compromise (DE.AE).
- **ISO/IEC 27002 (Information Security Controls):**
* Control A.5.29 (Information security for use of cloud services) indirectly supports third-party risk management.
* Control A.8.1 (Asset management) emphasizes maintaining an inventory, which ASM directly addresses.
- **CIS Critical Security Controls (CSC):**
* **Control 1: Inventory and Control of Enterprise Assets:** Achieved via continuous Attack Surface Intelligence.
* **Control 2: Inventory and Control of Software Assets:** Essential for tracking vulnerable software and MFT products.
* **Control 4: Secure Configuration of Enterprise Assets:** Addressing misconfigurations found via external scanning.
## Common Pitfalls to Avoid
- **Treating Attack Surface as Static:** Continuously scanning is mandatory; relying on annual penetration tests or outdated internal CMDBs will result in missing assets spun up by development or contractors.
- **Ignoring Low-Priced Credentials:** Underestimating the threat posed by cheap, readily available credentials found on the dark web; assume any exposed credential will be tested immediately.
- **Patching Based Solely on CVSS:** Failing to incorporate external threat intelligence into patching schedules leads to slow remediation of vulnerabilities that are actively being weaponized (e.g., KEVs).
- **Disregarding Vendor Security Hygiene:** Assuming third-party security is adequate without continuous, intelligence-driven validation; supply chain compromises offer an easy vector.
## Resources
- **Identity Intelligence Module:** For monitoring and automating response to compromised credentials.
- **Attack Surface Intelligence Module:** For continuous discovery, mapping, and inventory of external-facing assets.
- **Vulnerability Intelligence Module:** For gaining context on exploits in the wild and prioritizing patching efforts against active threats.