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Lee Nader Email & Phone Number

Senior Cyber Security Analyst at Critical Start
Location: Dallas, Texas, United States 7 work roles 2 schools
1 work email found @penson.com 7 phones found area 214, 972, 915, and 412 LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 7 phones

Work email l****@penson.com
Direct phone (214) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Critical Start
Role
Senior Cyber Security Analyst
Location
Dallas, Texas, United States
Company size
208 employees

Who is Lee Nader? Overview

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Quick answer

Lee Nader is listed as Senior Cyber Security Analyst at Critical Start, a company with 208 employees, based in Dallas, Texas, United States. AeroLeads shows a work email signal at penson.com, phone signal with area code 214, 972, 915, 412, and a matched LinkedIn profile for Lee Nader.

Lee Nader previously worked as Senior Cybersecurity Analyst at Critical Start and Systems Administrator at City Of Grapevine. Lee Nader holds Bachelor'S Degree, Intermedia/Multimedia from Duquesne University.

Company email context

Email format at Critical Start

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{first_initial}{last}@penson.com
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AeroLeads found 1 current-domain work email signal for Lee Nader. Compare company email patterns before reaching out.

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Profile bio

About Lee Nader

Cybersecurity Analyst specializing in high-stakes alert triage and threat response. Skilled in leveraging diverse security consoles and proprietary solutions to protect and support client environments. Known for a clear, methodical approach to training and coaching team members, as well as technical precision in analysis and documentation. Committed to streamlining processes, reducing alert fatigue, and enhancing team performance through automation.My background is forged over 20 years, with a foundation of providing prompt and accurate diagnosis of endpoint and associated hardware issues in diverse and challenging environments, such as in shop, on site, and on military forward operating bases (FOB).

Listed skills include Trading Systems, Equities, Electronic Trading, Options, and 22 others.

Current workplace

Lee Nader's current company

Company context helps verify the profile and gives searchers a useful next step.

Critical Start
Critical Start
Senior Cyber Security Analyst
plano, texas, united states
Website
criticalstart.com
Employees
208
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Company profile
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7 roles

Lee Nader work experience

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

Senior Cybersecurity Analyst

Current
Critical Start

Plano, Texas, United States

Triage and investigate alerts via CORR (CriticalStart’s proprietary solution built on the Elastic Stack) and over 13 other security consoles, including Microsoft 365 Defender, SentinelOne, and CrowdStrike Falcon.Perform security actions within client consoles, including password resets, access revocation, file quarantine, and email management.Conduct.

Aug 2022 - Present

Systems Administrator

City Of Grapevine
  • VMware:
  • vSphere ESXi7: deployed, migrated, and performed rolling reboots of hosts.
  • Created, updated, maintained and tuned GM (Gold Masters) for Instant Clones and Persistent VDI.
  • Horizon 8: created and maintained Instant Clone Pools, images, and snapshots.
  • AppVolumes and AppStacking: created AppStacks; reviewed and edited configuration files.
  • Dynamic Environment Manager (DEM): escalated privileges, diagnosed performance of apps.
Mar 2021 - Aug 2021

Assoc. It Specialist (Cyber Security)

Parsons Corporation

5875 Trinity Pkwy #300 Centreville, VA 20120

  • Separated due to pandemic downsizing.
  • Worked as a NIST Framework Detect Analyst.
  • Monitored alerts in Splunk Enterprise Alert Manager.
  • Used the following tools for threat hunting: FireEye, Redline, McAfee EPO, PaloAlto Panorama, AWS GuardDuty, ProofPoint, Nexpose, CarbonBlack, and Salesforce.
  • Monitored local, WAN and Cisco AnyConnect and PaloAlto GlobalProtect traffic. Accomplishments:
  • Assisted the Detect team in evaluating the following tools for Parsons: DarkTrace, ExtraHop, Cisco StealthWatch, and Falcon CroudStrike, resulting in Parsons subscribing to CroudStrike.
Aug 2019 - May 2020

Systems Integrator / Support

Independent Contractor

Carrollton, Texas, United States

  • Consulted, purchased, upgraded, and replaced computer parts. Reloaded OS and drivers.
  • Configured standalone wifi access points / DHCP servers.
  • Built basic SOHO servers.
  • Installed Windows 10, 8 and 7, CentOS and Ubuntu Linux.
  • Configured basic Group Policy GPOs.
  • Used Linux utilities to diagnose hardware failures and recover data from corrupted drives.
Mar 2013 - Aug 2019

Enterprise Support Specialist

Penson Financial Services

Dallas, Texas, United States

  • Resumed previous job after returning from deployment with US Army.
  • Provided asset management, desktop and laptop monitoring, support, deployment, and user migration.
  • Supported Macintosh Apple OSX, Windows 7, 8, 10 & Microsoft Office, Juniper VPN, iOS and Android devices.
  • Conducted phone and desk-side training, triage, and issue resolution.
  • Secured Mobile PCs with hard drive encryption.
  • Developed preventative measures and documented solutions for common issues.
Mar 2010 - Mar 2013

Network Switching Systems Operator-Maintainer

Us Army

Camp Taji, Iraq

  • Reactivated as part of the Army Individual Ready Reserve (IRR)
  • While deployed in Iraq, converted a tank garage into a productive office environment for the Senior Command of B Co 155th ABCT. Deployed mission critical Command Center machines.
  • Installed network hardware, deployed and supported workstations, and installed updates in accordance with Department of Defense (DoD) security standards for Secret Classified information.
  • Designed Sharepoint sites and managed user access and permissions.
  • Supervised 2-person night crew.
  • Ensured data was backed up for return stateside.
Mar 2009 - Mar 2010
Team & coworkers

Colleagues at Critical Start

Other employees you can reach at criticalstart.com. View company contacts for 208 employees →

TB Tyler Bellue Tyler Bellue Colleague at Critical Start Allen, Texas, United States, United States View → SN Steven Nguyen Steven Nguyen Colleague at Critical Start Dallas-Fort Worth Metroplex, United States View → AS Andrew Stewart Andrew Stewart Colleague at Critical Start Anna, Texas, United States, United States View → AD Alexander Dufault Alexander Dufault Colleague at Critical Start Greater Boston, United States View → JS Jordan Schirle Jordan Schirle Colleague at Critical Start Dallas, Texas, United States, United States View → SV Shaun Van Niekerk Shaun Van Niekerk Colleague at Critical Start United States, United States View → AF Ashley Faison Ashley Faison Colleague at Critical Start Dallas-Fort Worth Metroplex, United States View → AM Austin Mackey Austin Mackey Colleague at Critical Start The Colony, Texas, United States, United States View → TB Timothy Bandos Timothy Bandos Colleague at Critical Start Tampa, Florida, United States, United States View → NK Nick Karastamatis Nick Karastamatis Colleague at Critical Start United States, United States View →
2 education records

Lee Nader education

Bachelor'S Degree, Intermedia/Multimedia

Duquesne University

I was the first student to graduate from this program.

FAQ

Frequently asked questions about Lee Nader

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

What company does Lee Nader work for?

Lee Nader works for Critical Start.

What is Lee Nader's role at Critical Start?

Lee Nader is listed as Senior Cyber Security Analyst at Critical Start.

What is Lee Nader's email address?

AeroLeads has found 1 work email signal at @penson.com for Lee Nader at Critical Start.

What is Lee Nader's phone number?

AeroLeads has found 7 phone signal(s) with area code 214, 972, 915, 412 for Lee Nader at Critical Start.

Where is Lee Nader based?

Lee Nader is based in Dallas, Texas, United States while working with Critical Start.

What companies has Lee Nader worked for?

Lee Nader has worked for Critical Start, City Of Grapevine, Parsons Corporation, Independent Contractor, and Penson Financial Services.

Who are Lee Nader's colleagues at Critical Start?

Lee Nader's colleagues at Critical Start include Tyler Bellue, Steven Nguyen, Andrew Stewart, Alexander Dufault, and Jordan Schirle.

How can I contact Lee Nader?

You can use AeroLeads to view verified contact signals for Lee Nader at Critical Start, including work email, phone, and LinkedIn data when available.

What schools did Lee Nader attend?

Lee Nader holds Bachelor'S Degree, Intermedia/Multimedia from Duquesne University.

What skills is Lee Nader known for?

Lee Nader is listed with skills including Trading Systems, Equities, Electronic Trading, Options, Securities, Back Office, Financial Services, and Market Data.

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