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Cyber Security Senior Analyst - Rakuten-CERT Section, Cyber Security Defense Department (CSDD)

楽天グループ株式会社

テック 東京都 企業サイト 掲載 10/1

給与

記載なし※ 募集要項に金額の記載がありません

勤務地
東京都
雇用形態
記載なし
働き方
記載なし
年間休日
記載なし

要約求人票をもとにAIがまとめたものです

Lead and coordinate responses to cybersecurity incidents, from detection and investigation through containment, eradication, and recovery. Conduct log analysis and digital forensics, analyze malicious files, and prepare incident reports and recommendations. The role also includes threat hunting, improving security controls and processes, and guiding internal teams on incident response best practices.

応募資格

必須

  • Bachelor's degree in Computer Science, Cybersecurity, Information Technology, or a related field (or equivalent experience)
  • More than 8 years of experience in cybersecurity, with a focus on incident response, digital forensics, or threat detection
  • Strong knowledge of security tools and technologies, such as SIEM, EDR, IDS/IPS, firewalls, and vulnerability scanners
  • Proficiency in log analysis and familiarity with log formats (e.g., syslog, Windows Event Logs)
  • Hands-on experience with Incident Response (IR) processes and methodologies
  • Familiarity with scripting and automation (e.g., Python, PowerShell, Bash) to streamline incident response processes
  • Strong sense of ownership and responsibility
  • Excellent problem-solving, analytical, and communication skills
  • Ability to work under pressure and handle multiple incidents simultaneously
  • English (総合 - 3 - 上級)

歓迎

募集要項最終確認 10/2

職種
セキュリティエンジニア
雇用形態
記載なし
役職
Senior Analyst
給与
記載なし
勤務地
東京都
働き方
記載なし
経験年数
8年以上
学歴
大学卒業以上
掲載日
2026/10/01 21:36(1日前)
最終確認
2026/10/02 16:40(今日)

仕事内容

Department Overview

  • The Cyber Security Defense Department (CSDD) is responsible for safeguarding all Rakuten companies and users from cyber threats, ensuring the security and integrity of Rakuten Group's global internet services. We oversee all aspects of both Secure Development and Security Operations for services developed within the group, with dedicated security teams and operation centers strategically located in key regions worldwide.

Position Details

  • Lead and coordinate the response to cybersecurity incidents, including detection, containment, eradication, and recovery, while ensuring clear communication and collaboration across teams
  • Analyze logs from various sources (e.g., firewalls, SIEM, IDS/IPS, endpoint detection tools) to identify threats, investigate anomalies, and determine the scope and impact of incidents
  • Perform digital forensic investigations on compromised systems, including memory dumps, disk images, and network traffic, while preserving evidence in accordance with legal and organizational requirements
  • Use tools to quickly analyze malicious files, scripts, and executables to identify indicators of compromise (IOCs) and take necessary actions for containment, blocking, and mitigation
  • Prepare detailed incident reports, including root cause analysis, impact assessments, and recommendations for improvement, and communicate findings to stakeholders, including technical teams and management
  • Proactively identify and recommend improvements to security controls, processes, and tools to reduce the likelihood of future incidents, and conduct threat hunting activities to mitigate risks
  • Provide guidance and training to internal teams on incident response best practices and stay up-to-date with the latest cybersecurity trends, tools, and techniques

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