Ciaran Walsh
Leighlinbridge,Co Carlow
Summary
Accomplished cybersecurity professional with extensive expertise in EDR and NDR, SIEM proficiency, and cloud architecture design. Demonstrates strong knowledge of AWS and Azure, specialising in phishing detection and response, cyber threat intelligence, and security operations. Adept at communication and report writing, with proven skills in data loss prevention strategies and O365 security solutions. Experienced in remote security implementation, analytical problem-solving, team collaboration, and working independently under pressure. Passionate about information security with a focus on high-pressure management strategies and customer engagement in security services.
Overview
23
23
years of professional experience
4
4
years of post-secondary education
1
1
Certification
Work history
Security Analyst
CRH
Dublin, Dublin
2023.12 - 2025.01
- Conducted counter threat intelligence using Zerofox, DomainTool, and CyberAngel.
- Managed phishing incidents with Proofpoint, Trap, and Tap solutions.
- Collaborated with Reliaquest on Graymatter initiatives to enhance security measures.
- Provided support at ServiceNow cyber help desk for incident resolution.
- Navigated complex organisational structures across multiple global subsidiaries.
Security Analyst
CDC StateStreet
Kilkenny, County Kilkenny
2022.09 - 2023.06
- Utilised SNOW to improve detection capabilities across operations.
- Managed PhishER for efficient processing of suspicious emails.
- Implemented Symantec DLP to protect sensitive information effectively.
- Produced daily Pulse reports to ensure operational transparency in a global environment.
Associated Security Analyst
Vectra AI
2021.02 - 2022.08
- Streamlined workflow processes through automation tools, enhancing productivity and minimising human error in security operations.
- Analysed network traffic logs to identify irregular behaviour, preventing potential cyber attacks.
- Collaborated with IT team to design and implement effective security protocols, increasing network safety.
- Recommended updates for customers and improving overall performance and resilience against threats.
- Conducted customer weekly reports and triaged networks as part of analysis responsibilities.
- Provided customer training and managed MDR processes to ensure operational excellence.
- Facilitated monthly touchpoints, quarterly business reviews, and health checks in CSM role.
Evening Staff
Drive Filling Station
Leighlinbridge
2017.01 - 2021.01
Bar Manager
Fox on the Downs
Brighton
2015.01 - 2016.01
Evening manager
Centra
Leighlinbridge
2002.01 - 2015.01
- Evening manager with Centra
- (Centra Filling Station, Leighlinbridge)
Education
Bachelor of Science - Cyber Crime and IT Security
SETU | South East Technological University
Carlow 2017.01 - 2021.01
Skills
- EDR and NDR expertise
- SIEM proficiency
- Cloud architecture, AWS and Azure knowledge
- Phishing detection and response experience
- Cyber threat intelligence (CTI) proficiency
- Data loss prevention strategies
- O365 security solutions
- Remote security implementation
- Analytical problem-solving skills
- Team collaboration and independence
- Attention to detail under pressure
- Information security passion
- High-pressure management strategies
- Customer engagement in security services
- Security operations experience
- Communication and report writing
Certification
- CCNA
- CompTIA CYSA+
- AWS Cloud Technical Essentials
- AWS Fundamentals: Addressing Security Risk
- Splunk Fundamentals 1
- Splunk User Behaviour Analytics
Timeline
Security Analyst
CRH
2023.12 - 2025.01
Security Analyst
CDC StateStreet
2022.09 - 2023.06
Associated Security Analyst
Vectra AI
2021.02 - 2022.08
Evening Staff
Drive Filling Station
2017.01 - 2021.01
Bachelor of Science - Cyber Crime and IT Security
SETU | South East Technological University
2017.01 - 2021.01
Bar Manager
Fox on the Downs
2015.01 - 2016.01
Evening manager
Centra
2002.01 - 2015.01