Cyber & Investigative Services - Insider Threat Detection Senior Analyst

EY; Wrocław; Hybrid; PLN 180,000 - 240,000; Full time

Job summary

EY GDS Poland is seeking a Senior Analyst for Insider Threat Detection in Wrocław/Katowice with a hybrid work model (2 days in office, 3 days remote). You will triage security alerts from SIEM and SOAR platforms, validate insider threat activity, and support investigations to strengthen EY's data protection.

The role emphasizes detection tuning, use-case development, and cross-team collaboration with risk, engineering, and data protection teams.

Qualifications

• Degree in Computer Science or related field, or equivalent work experience.
• 3+ years of experience in data security, SIEM, or related areas.
• Experience with Microsoft Sentinel and KQL is preferred.

Responsibilities

• Triage data exfiltration security alerts across SIEM/SOAR platforms.
• Identify tuning recommendations for existing detection rules.
• Collaborate with technical teams and vendors to resolve alert inquiries.

Skills

Data Security

Analytical thinking

Communication skills

Investigative skills

Time management

Education

Degree in Computer Science or related field

Tools

Microsoft Sentinel

Kusto Query Language (KQL)

Job description

Cyber & Investigative Services – Insider Threat Detection Senior Analyst

Location: Wrocław / Katowice - 2 days in office / 3 days remote

Let us introduce you the job offer by EY GDS Poland – a member of the global integrated service delivery center network by EY.

Today’s world is fueled by vast amounts of information. Data is more valuable than ever before. Protecting data and information systems is central to doing business, and everyone in EY Information Security has a critical role to play. Join a global team of almost 950 people who collaborate to support the business of EY by protecting EY and client information assets! Our Information Security professionals enable EY to work securely and deliver secure products and services, as well as detect and quickly respond to security events as they happen. Together, the efforts of our dedicated team helps protect the EY brand and build client trust.

Within Information Security we blend risk strategy, digital identity, cyber defense, application security and technology solutions as we consider the entire security lifecycle. You will join a team of hardworking, security-focused individuals dedicated to supporting, protecting and enabling the business through innovative, secure solutions that provide speed to market and business value.

The opportunity

CIS Insider Threat Detection (ITD) is a team within EY’s Information Security organization. The ITD team’s mission is to design, implement, and deliver technology solutions and services that protect EY’s and its clients’ sensitive information. The service focuses on identifying and mitigating risks associated with internal threat actors across EY’s global workforce of more than 400k+ users, with particular emphasis on detecting the unauthorized exfiltration of sensitive data to external destinations.

Insider Threat Detection Senior Analyst will be responsible for the end-to-end triage and analysis of data security alerts generated by SIEM and SOAR platforms, validating potential insider threat activity, and supporting incident investigations. The individual will continuously improve detection capabilities through use case development, detection tuning, trend analysis, and process optimization while working closely with engineering, risk, and data protection teams to strengthen EY's ability to identify and prevent unauthorized data exfiltration.

Your Key Responsibilities

• Triage of data exfiltration security alerts across various SIEM and SOAR platforms.
• Identification of tuning recommendations to the currently defined detection rules.
• Work with technical teams and vendors to address technical inquiries related to the security alerts.

Skills And Attributes For Success

• Strong understanding of Data Security domain throughout the Data Security Lifecycle.
• Ability to independently research and identify tuning recommendations.
• Strong verbal and written communication skills.
• Strong investigative, analytical and problem-solving skills.

To qualify for the role, you must have

• Degree in Computer Science or related field, or equivalent work experience

At least 3 years of experience in one or more of the following areas:

• Data Loss Prevention (DLP) Technology support and Event Handling.
• Security Information and Event Management (SIEM) Technology support and Event Handling.
• Hands‑on experience with Microsoft Sentinel and Kusto Query Language (KQL).

Ideally, you’ll also have

• Global approach for working with different cultures and backgrounds.
• Ability to appropriately balance firm security needs with business impact and benefit.

What We Look For

• Critical thinking skills demonstrating analytical and systematic approach to problem solving and a high degree of self‑motivation.
• Experience working in a global virtual environment.
• Good interpersonal, communication and presentation skills.
• Good judgment, tact, and decision‑making ability.
• Ability to deal with ambiguity and change, and exercise appropriate time management to meet deliverables.
• Prioritization of work items to ensure timelines are achieved.

What We Offer

EY Global Delivery Services (GDS) is a dynamic and truly global delivery network. We work across nine locations – Argentina, Hungary, India, the Philippines, Poland, Sri Lanka, Mexico, Spain and the United Kingdom – and with teams from all EY service lines, geographies and sectors, playing a vital role in the delivery of the EY growth strategy. From accountants to coders to advisory consultants, we offer a wide variety of fulfilling career opportunities that span all business disciplines. In GDS, you will collaborate with EY teams on exciting projects and work with well‑known brands from across the globe. We’ll introduce you to an ever‑expanding ecosystem of people, learning, skills and insights that will stay with you throughout your career.

• 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.

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

About EY

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.

The Exceptional EY Experience. It’s Yours To Build.

In compliance with the requirements of the Whistleblower Protection Act, our company has established the Procedure for reporting breaches of law and undertaking appropriate follow‑up actions. Any misconduct should be reported through the EY Ethics Hotline.