Cybersecurity Signature Analyst

Our client is seeking a Cybersecurity Signature Analyst: Reporting to the Lead of Focused Operations, under the Branch Chief of Defensive Cyber Operations, you will be tasked with developing and maintaining defensive countermeasures for the enterprise. Working within a Fusion model, will collaborate with other teams within Focused Operations with the distinct task of proactively preventing a successful compromise and eradicating persistent adversaries already in the enterprise. This will be done through various means such as: reviewing future and past intelligence reports, reviewing incident reports, through regular Purple Teaming exercises, and continuously validating Defensive Countermeasures already deployed. What You'll Get to Do: Analyzes trends and patterns of data on NGA networks to identify and predict previously undiscovered events and incidents, and develop or tune rules/signatures/scripts as needed; Coordinates with other Cybersecurity Operations to develop or tune rules/signatures/scripts; Coordinates with other Cybersecurity Operations Services to investigate and obtain information about potential sources of compromise on NGA systems, and develop or tune rules/signatures/scripts as needed; More About the Role: Correlates and analyzes precursors to incidents, and develop or tune rules/signatures/scripts as needed; Improve SIEM alert efficiency though evaluation of valid alerts and false positives, and develop or tune rules/signatures/scripts as needed; Assists the Cyber Incident Response Team by assessing ongoing incident activity to predict adversary responses and locations of compromise; Documents all work in the authorized ticketing system with a sufficient level of detail to ensure the Government and other contract services can systematically reconstruct the analysis; Provide input to the daily CSOC Significant Activity Report, the daily CSOC Operations Update, and the Weekly CSOC Status Report; You'll Bring These Qualifications: Must be a US Citizen with an Active TS/SCI. 8 years of related advanced cyber security analytics work experience. Must have a certification that is compliant with DoD 8140.01 and DoD 8570.01-M IAT Level III and CSSP Analyst. Experience with data mining or building queries in a SIEM. Strong understanding of signature development and tuning. Strong understanding of network protocols and analysis with protocol analyzers. Knowledge of static file signatures, i.e. "magic numbers" and how it applies to developing countermeasures for files in transit and that reside locally on a host. Good working knowledge of regular expressions. Preferred Skills: Comfortable in a hex editor. Ability to write python/bash/powershell scripts. Ability to analyze each use case, as it pertains to detection logic, and identify the corresponding capability. Good understanding of Purple Team Tactics.