Sandi Mcmillin
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Sandi Mcmillin Email & Phone Number

Senior Information Security Officer at Leidos
Location: Pasadena, Maryland, United States 6 work roles
1 work email found @applied-insight.com LinkedIn matched
✓ Verified Jun 2026 3 data sources Profile completeness 71%

Contact Signals · 1 work email

Work email m****@applied-insight.com
LinkedIn Profile matched
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Current company
Role
Senior Information Security Officer
Location
Pasadena, Maryland, United States
Company size

Who is Sandi Mcmillin? Overview

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Quick answer

Sandi Mcmillin is listed as Senior Information Security Officer at Leidos, a company with 256 employees, based in Pasadena, Maryland, United States. AeroLeads shows a work email signal at applied-insight.com and a matched LinkedIn profile for Sandi Mcmillin.

Sandi Mcmillin previously worked as ISSO at Applied Insight, Llc and Senior Operations Manager at Gdit.

Company email context

Email format at Leidos

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{last}{first_initial}@applied-insight.com
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AeroLeads found 1 current-domain work email signal for Sandi Mcmillin. Compare company email patterns before reaching out.

Profile bio

About Sandi Mcmillin

Sandi Mcmillin is a Senior Information Security Officer at Leidos.

Current workplace

Sandi Mcmillin's current company

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Leidos
Leidos
Senior Information Security Officer
Pasadena, MD, US
Employees
256
AeroLeads page
6 roles

Sandi Mcmillin work experience

A career timeline built from the work history available for this profile.

Senior Information Security Officer

Pasadena, MD, US

Senior Operations Manager

Gdit

Annapolis Junction, Maryland, United States

  • Spearheading security automation to enhance the efficacy of the Information Systems Security Team utilizing enterprise tools to include Splunk and ServiceNow
  • Teaming with Splunk vendor engineer to bring ideas to conception
  • Teaming with other internal organizations to utilize data feeds currently being captured
  • Developing automations allowing the team to proactively ensure accuracy of data before modernization efforts
  • Evolving the information provided to senior executive leadership for Daily Status Review (DSR)
Jul 2021 - Jan 2022

Senior Manager, Cybersecurity Risk Management Frame

  • Championed an unprecedented global transition of over 100+ SSPs with over 300,000 endpoints
  • Established and managed a highly qualified team of ISSO/ISSEs
  • Performed baseline analysis of SSP compliance for review with the Client, Executive Leadership, and contracting officers
  • Implemented team and process changes to adjust to the influx of SSPs and maintain success for SSP authorization and continuous monitoring
  • Fostered working relationships with the Client InfoSec Leaders, System Owners, DAOs, ISSMs, ISSOs and contract partners as well as internal organizations team members and leads.
  • Managed multiple systemizations and overhauled roles/functions of the team to increase overall team performance
Dec 2018 - Jul 2021

Security Device Team

  • Responsible for operation and maintenance of over 50 boundary devices
  • Provided technical guidance and mentorship to junior team members
  • Ensured all actions taken to secure the network met proper security policies and best practices while maintaining the health and security posture of the infrastructure
  • Maintained scheduling for team members for call-in purposes to ensure response to all after hours emergencies were addressed effectively
Nov 2017 - Dec 2018

Insider Threat Analyst

Eagle Alliance
  • Identified and responded to various potentially malicious, suspicious, and exploitative threats and vulnerabilities
  • Investigated, analyzed, and characterized enterprise-wide host-based events to identify possible insider threat and policy violation activity
  • Enforced compliance with security policies, standards, and guidelines
  • Reviewed and compiled data necessary for analysis and case reporting
  • Created, notified, and disseminated reports identifying significant security events
  • Executed on-demand data extraction and querying as necessary, or as requested by the customer
Apr 2007 - Nov 2017
Team & coworkers

Colleagues at Leidos

Other employees you can reach at applied-insight.com. View company contacts for 256 employees →

FAQ

Frequently asked questions about Sandi Mcmillin

Quick answers generated from the profile data available on this page.

What company does Sandi Mcmillin work for?

Sandi Mcmillin works for Leidos.

What is Sandi Mcmillin's role at Leidos?

Sandi Mcmillin is listed as Senior Information Security Officer at Leidos.

What is Sandi Mcmillin's email address?

AeroLeads has found 1 work email signal at @applied-insight.com for Sandi Mcmillin at Leidos.

Where is Sandi Mcmillin based?

Sandi Mcmillin is based in Pasadena, Maryland, United States while working with Leidos.

What companies has Sandi Mcmillin worked for?

Sandi Mcmillin has worked for Leidos, Applied Insight, Llc, Gdit, General Dynamics Information Technology, and Eagle Alliance.

Who are Sandi Mcmillin's colleagues at Leidos?

Sandi Mcmillin's colleagues at Leidos include Melissa Sorto, Derek Y., Lindsay Hunsaker, Asad Ibrahim, and Ashley Vastey.

How can I contact Sandi Mcmillin?

You can use AeroLeads to view verified contact signals for Sandi Mcmillin at Leidos, including work email, phone, and LinkedIn data when available.

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