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EASM – External Attack Surface Management

Do you truly know the external exposure of your IT system? Do you have control over your digital assets?

1. External Attack Surface Management: Information System Security and IT Protection. Benefit from a comprehensive IT security audit to map, analyze risks, and secure all your IT systems exposed to the internet and the cloud. 2. Cybersecurity-Oriented EASM Monitoring, Security Incidents, and ANSSI Compliance. Our service helps you detect, monitor, and remediate security vulnerabilities: incidents, network exposures, shadow IT, and ANSSI/GRC compliance. 3. System Security, Risk Management, and Digital Security Measures. Maintain a high level of security by integrating information security policy management, system security recommendations, and security solutions tailored to your IT infrastructure. 4. Authentication, Encryption, and Cryptography for Protecting Exposed Data. Strengthen your critical exposed workstations: password policies, secure connections, encryption of critical services, and cryptography to prevent data leaks. 5. Connected Asset Mapping: Servers, IoT Devices, Cloud, and Business Dependencies. Identify all your exposed servers, IoT devices, IT systems, and SaaS applications, including hidden dependencies or dangerous legacy systems (migration remnants, shadow SaaS). 6. Proactive Detection of Cyberattacks, Security Incidents, and External Threats. Continuously monitor threats: cybercrime, APT exploits, hacking attempts, and vulnerabilities, with integration into your SOC or managed monitoring. 7. Information Systems Security Audit/EASM and Remediation: Action Plans and Security-Oriented IT Management. Develop a concrete audit, remediation, and information systems security management plan tailored to your business and compliance challenges: reporting, recommendations, and ongoing security measures. 8. Network Security and IT Security Policy Against Shadow IT: Detect exposures from undeclared projects, subsidiaries, or cloud environments by strengthening security policy, risk analysis, and network security management. 9. EASM Security Solutions: PTaaS, SOC, GRC Integration, and 360° Digital Defense: Combine your attack surface management with PTaaS, SOC and GRC integration, and a portfolio of digital security solutions to drive 360° protection. 10. Business Monitoring and Awareness: Continuous IT security and recurring IT security audits

Your major challenges

Identify exposed assets that are not referenced or not controlled by the IT department

Reduce the visible attack surface used in intrusions

Avoid the effects of Shadow IT, configuration errors, or cloud migration remnants

Protect critical services and data accessible from the Internet

External visibility: the true perimeter as seen by the attacker

EASM provides a comprehensive and up-to-date view of your technical online presence. It is an essential tool for anticipation and prevention.

Why implement external attack surface management?

 Advanced cyberattacks (APTs, targeted ransomware, data exfiltration) are becoming more professional.

Forgotten interfaces

Test or administration environments exposed without protection

Passive and active mapping of your assets exposed on the Internet

Shadow IT

Online services, domains, or projects outside the IT department's radar

Detection of configuration errors, vulnerable versions, forgotten network services.

Cloud Errors

Public buckets, exposed APIs, default configurations (AWS, Azure, GCP)

Continuous monitoring and alert platforms.

Known vulnerabilities

Outdated software or uncorrected configuration errors

Analysis of dependencies by domain, subdomain, IP address, and cloud provider

Our external attack surface management services

The EASM approach integrates with all cybersecurity pillars for a defense focused on your exposure.

Initial exposure audit (one-shot)

Objective

Conduct a comprehensive inventory of the assets at risk

Covert attack scenario

Passive scanning, WHOIS/DNS/ASN analysis, application fingerprinting, cloud posture

EASM Continuous Monitoring

Objective

Maintain a real-time view of your exhibition

Covert attack scenario

Weekly/daily detections, alerts, platform portal, summary report

Mapping invisible dependencies

Objective

Identify the indirectly exposed third-party services, domains, or providers

Covert attack scenario

DNS tracking, CNAME analysis, public cloud buckets, risky SaaS services

SOC-Sync & actionable alerting

Objective

Integrate EASM alerts into the Intrinsec SOC or your own tools

Covert attack scenario

TLP-stamped alerts, push notifications to Cyboard, SOAR/SIEM integrations

Our cover

Automatic discovery of shadow IT

 Rapid detection and response

Risks covered

Sensitive services exposed in the information system

Methods of intervention

EASM Managed Service / SaaS Management Platform

Why choose Intrinsec?

Offensive expertise: a CTI + Red Team + SOC team to connect exposure, threat, and detection

Methodology from TIBER-EU, MITER ATT&CK and Threat Intelligence process

360° integration into the security posture (SOC, GRC, Cloud, etc.)

On-site remediation assistance: not just an observation, but an action plan

Dark & Deep Web Vision: correlation of external exposures with threats present on dark web marketplaces (resale of RDP access, credentials, exploitable vulnerabilities, etc.)