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EY Cyber Defense Threat Hunter in Austin, Texas

At EY, you’ll have the chance to build a career as unique as you are, with the global scale, support, inclusive culture and technology to become the best version of you. And we’re counting on your unique voice and perspective to help EY become even better, too. Join us and build an exceptional experience for yourself, and a better working world for all.

Technology has always been at the heart of what we do and deliver at EY. We need technology to keep an organization the size of ours working efficiently. We have 250,000 people in more than 140 countries, all of whom rely on secure technology to be able to do their job every single day. Everything from the laptops we use, to the ability to work remotely on our mobile devices and connecting our people and our clients, to enabling hundreds of internal tools and external solutions delivered to our clients. Technology solutions are integrated in the client services we deliver and is key to us being more innovative as an organization.

EY Technology supports our technology needs through three business units:

Client Technology (CT) - focuses on developing new technology services for our clients. It enables EY to identify new technology-based opportunities faster, and pursue those opportunities more rapidly.

Enterprise Workplace Technology (EWT) – EWT supports our Core Business Services functions and will deliver fit-for-purpose technology infrastructure at the cheapest possible cost for quality services. EWT will also support our internal technology needs by focusing on a better user experience.

Information Security (Info Sec) - Info Sec prevents, detects, responds and mitigates cyber-risk, protecting EY and client data, and our information management systems.

The opportunity

The Active Defense team is responsible for four core areas: Network Reconnaissance, Proactive Penetration Testing (Purple Team), Anomaly Analysis, and Trapping and Coercion. This function allows the Cyber Defense Team to fortify and mature the firm’s enterprise security.

In an Active Defense Analyst, we are looking for someone who has experience in Information Security and wants to take the next step in the adventure. In its purple team capacity, candidates will be expected to emulate attacker behaviors and devise strategies to disrupt the actions of an attacker, thus enhancing the abilities of defensive teams. In the threat hunting capacity, the analyst will identify security vulnerabilities through analysis of event data from SIEM and other relevant tools.

You will report findings to technical and non-technical audiences, and collaborate with other teams identify and remediate vulnerabilities. The position requires attention to detail and the ability to work, both as part of a team and independently.

Skills and attributes for success

Essential Functions of the job:

  • Perform research and analysis of attacker techniques and methodologies, and emulate those attacks in a collaborative and controlled environment

  • Identify security breaches through ‘Hunting’ operations within a SIEM, full packet capture, EDR, and other tools and treat intelligence

  • Identify patterns consistent with sophisticated attacker methodologies, and report on security concerns as they are escalated or identified.

  • Analyze artifacts collected during a security test or passive investigation.

  • Communicate with server owners, system custodians, and IT contacts to pursue security testing activities, including: obtaining access to systems, digital artifact collection, and containment and/or remediation actions

  • Create presentations in MS Word, PowerPoint, and/or Excel that support findings

  • Maintain, manage, improve and update security testing process and protocol documentation

  • Assist in analyzing findings, and develop fact based reports

  • Identify means to disrupt attacker actions, and enhance defender response capabilities.

To qualify for the role, you must have:

  • 6+ years of relevant experience in one or more of the following areas: threat intelligence, intrusion analysis, incident response, malware analysis, security and network operations, penetration tester, or similar roles.

  • Demonstrated understanding of the threat intelligence life cycle, network threats, attacks, attack vectors and methods of exploitation with an understanding of intrusion set tactics, techniques and procedures (TTPs).

  • Knowledgeable in security incident response process, procedures, and life-cycle, including performing security audits as part of red team

  • Good understanding of both Windows and Unix/Linux based operating systems

  • Understanding of IP networking concepts, to include addressing, routing, common protocol usage, use of proxies, load balancers, firewalls, routers, and switches in network architecture.

  • Global mind-set for working with different cultures and backgrounds

  • Demonstrated integrity and judgment within a professional environment

  • Ability to appropriately balance work/personal priorities

  • Teaming skills as well as ability to work independently on taskings

  • Good social, communication, and writing skills

Qualifications, Certifications and Education requirements:

  • Associates Degree and/or any of the following certifications: GPEN, CISSP, Security+, GCIH, OSCP, GCFE, CFCE, other relevant GIAC certs.

  • Familiarity with Splunk, NetWitess, CarbonBlack, StealthWatch, ThreatGrid or Malware Analysis fundamentals.


  • Some hands-on experience as an administrator configuring one or more of SIEM, Endpoint Protection, Vulnerability Scanners, or Data Loss Prevention

  • Proficient with one or more scripting languages such as Perl, Python, PowerShell etc. in a threat intelligence or incident response environment

Supervising Responsibilities:

  • However, the role requires mentoring, collaboration, and training of more junior associates.

  • On rare occasions, may be required to work nights or weekends in support of incident response or penetration audits.

What we offer

As part of this role, you'll work in a highly integrated, global team with the opportunity and tools to grow, develop and drive your career forward. Here, you can combine global opportunity with flexible working. The EY benefits package goes above and beyond too, focusing on your physical, emotional, financial and social well-being. Your recruiter can talk to you about the benefits available in your country. Here’s a snapshot of what we offer:

  • Continuous learning: You’ll develop the mindset and skills to navigate whatever comes next.

  • Success as defined by you: We’ll provide the tools and flexibility, so you can make a meaningful impact, your way.

  • Transformative leadership: We’ll give you the insights, coaching and confidence to be the leader the world needs.

  • Diverse and inclusive culture: You’ll be embraced for who you are and empowered to use your voice to help others find theirs.

Please apply to this role only through the ‘Apply’ link (not through the local office). Your application will then be routed to the appropriate recruiting team.

The exceptional EY experience. It’s yours to build.

EY | Building a better working world

EY exists to build a better working world, helping to create long-term value for clients, people and society and build trust in the capital markets.

Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate.

Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today.

EY is an equal opportunity, affirmative action employer providing equal employment opportunities to applicants and employees without regard to race, color, religion, age, sex, sexual orientation, gender identity/expression, national origin, protected veteran status, disability status, or any other legally protected basis, in accordance with applicable law.