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Cyber Defence Analyst

A&O Shearman
Belfast, GBR
Full-time
Mid
Discovered 5 days ago
powershellpython
Free

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  • Investigate and prioritise Level 2 escalated events and alerts which have been detected through Level 1 monitoring activities by the firm’s MSSP to identify potential incidents. Escalate these events further to senior colleagues and appropriate stakeholders when necessary.
  • Investigate potential cyber security and data loss incidents raised by firm employees and third parties, following the defined playbooks for the Cyber Defence team.
  • Respond to inbound queries to the information security mailbox, consulting with more senior colleagues for advice where required.
  • Participate in incident response activities, including CSIRT activities, for confirmed incidents in local time-zone:
  • Conduct initial triage and investigation.
  • Assist with containment, mitigation, and remediation efforts, ensuring any forensic evidence is gathered and documented appropriately.
  • Participate in security incident response exercises and contribute to post-exercise reviews.
  • Be part of the Cyber Defence on-call rota, which may require out-of-hours work.
  • Pick-up and hand-off incident response activities with the rest of the Belfast Cyber Defence team to other teams in different time-zones across the globe, as per our 24-7 follow-the-sun global model.
  • Maintain awareness of current and emerging cyber threats, techniques, and procedures (TTPs) using threat intelligence insights from the Threat and Vulnerability Management team, applying this knowledge in daily operations.
  • Assist with the implementation and enhancement of new and existing cyber defence tools and processes to maximise the effectiveness of the Cyber Defence function.
  • Contribute to the maintenance and improvement of playbook and process documentation for Cyber Defence.
  • Collaborate with other areas of the firm (e.g. wider information security and IT teams) to improve the firm’s security posture by implementing controls and fostering awareness.
  • Advise business stakeholders on Cyber Defence, translating complex technical concepts into business-friendly language.
  • At least 1+ years’ experience in a security operations or similar technical security role.
  • Operational-level experience in at least two of the following domains; Security engineering, Alert triaging, Rule writing, Incident response, Digital Forensics and Incident Response (DFIR), Threat intelligence and management, Vulnerability management, or Security control testing.
  • In-depth understanding of Networking and routing protocols (e.g. TCP/IP) and services (e.g. DNS, SMTP).
  • Cyber defence technologies and tooling, including:
  • SIEM solutions

• Intrusion Detection And Prevention Systems (ID And PS)

  • Threat and vulnerability management platforms
  • Endpoint protection
  • Firewalls
  • Highly analytical mindset with strong problem-solving skills.
  • Ability to interpret data flows, assess security events, and draw logical conclusions.
  • Excellent written and verbal communication skills.
  • Ability to collaborate effectively across technical and non-technical teams.
  • High level of personal integrity and ethics, demonstrating an appropriate level of judgement.
  • A genuine passion for continuous learning and development in cybersecurity, staying up-to-date with the latest developments, trends, and technologies in the field.
  • Bachelor’s degree in Information Security, Computer Science, Engineering, Technology, or a related field.
  • Industry-recognised certifications such as:

• CISM (Certified Information Security Manager)

  • CompTIA Security+
  • Practical programming or scripting experience, particularly with:
  • Python
  • PowerShell

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