Weekend Night Threat Hunter & IR Analyst

110 Yahoo Holdings Inc.; United States; Hybrid; USD 89,000 - 184,000; Full time

Benefits offered by this job

Healthcare

401k

Backup childcare

Education stipends

Hybrid work options

Job summary

Yahoo Holdings Inc. is seeking a security analyst to join the Paranoids Fire forensics and incident response operations. You will monitor security events, perform containment, and drive AI-assisted investigations across networks, endpoints, and cloud data stores.

You will collaborate with engineers to automate triage, tune detections, and support threat hunting exercises while maintaining documentation and on-call duties.

Qualifications

• 1–3 years of experience or equivalent practical background in security fundamentals, including network/host forensics, log analysis, and basic malware triage.
• Demonstrated interest in and commitment to the field of information security and incident response.
• Working understanding of common network services (web, mail, DNS), protocols, network vulnerabilities, and MITRE ATT&CK.
• Hands-on experience navigating Windows, macOS, and Linux operating systems and system logs.
• Familiarity with using modern AI productivity tools or AI coding assistants.
• Ability to work independently during shift hours and communicate effectively via collaboration platforms.
• Strong written and verbal communication skills.

Responsibilities

• Monitor, triage, and analyze security events from networks, applications, endpoints, and cloud data stores. Leverage AI-assisted investigation tools and structured prompts to accelerate log parsing, synthesize alert telemetry, and draft initial incident timelines.
• Assess security incidents, perform initial containment actions, and coordinate with Yahoo business units to remediate operational issues.
• Identify repetitive, manual monitoring tasks and partner with senior engineers to implement AI-driven efficiencies and automated triage playbooks.
• Assist in tuning detection signatures and developing new alerting use cases for identifying malicious activity across internal systems.
• Evaluate new log sources for security detection value and contribute to detection engineering rules under senior analyst mentorship.
• Critically evaluate and validate AI-generated outputs, detection queries, and script suggestions to prevent hallucinations and false positives.
• Collaborate with the team to support regular threat hunting exercises and table-top simulation scenarios.
• Maintain accurate documentation, incident response runbooks, and shift handoff logs.
• Participate in a scheduled 24x7 on-call rotation as required for critical incident response escalations.

Skills

Security basics

MITRE ATT&CK

Windows/macOS/Linux

AI tooling

Communication skills

Team collaboration

Tools

SIEM platforms

Databricks

Shell scripting

Python

EDR/IDS

Job description

Yahoo Holdings Inc. is seeking a security analyst to join the Paranoids Fire forensics and incident response operations. You will monitor security events, perform containment, and drive AI-assisted investigations across networks, endpoints, and cloud data stores.

You will collaborate with engineers to automate triage, tune detections, and support threat hunting exercises while maintaining documentation and on-call duties.