John Henderson: Email & Phone Number

Opt-Out

Senior Penetration Tester at PLEX Cyber|Las Vegas, Nevada, United States

Position:

Senior Penetration Tester at PLEX Cyber

Location:

Las Vegas, Nevada, United States

View John Henderson's Email

Up to 10 free lookups. No credit card required.

Last updated: 2026-08-05

Updated: 2026-08-05

Found email addresses for John Henderson:

Business emails:

j************n@plex-llc.com

Personal emails:

k**********5@Gmail.com,

j******r@ufl.edu

Found phones for John Henderson:

+1-205-***-**13,

+1-480-***-**40,

+1-480-***-**98

A different John Henderson?

Work Experience 12 years

Senior Penetration Tester at PLEX Cyber

Aug 2022 - Current

Cyber Security Analyst at PLEX Cyber

May 2023 - Current

Signal Intelligence Collector at United States Marine Corps

Dec 2014 - Dec 2019

John Henderson started working in 2014, then the employee has changed 1 company and 2 jobs. On average, John Henderson works for one company for 4 years 1 month.

John is proficient in Spanish. Their professional focus is Amazon Web Services (AWS), Application Security, and Burp Suite across 3 core areas.

John holds OffSec Experienced Penetration Tester (OSEP), OffSec Web Expert (OSWE), and Offensive Security Certified Practitioner certifications.

Education

Bachelor of Science - BS at University of Maryland Global Campus

Master's degree at University of Maryland Global Campus

Frequently Asked Questions

What is John Henderson's email address?

SignalHire found verified email addresses for John Henderson, both business and personal. Their business email is j************n@plex-llc.com, and personal emails include k**********5@Gmail.com, and j******r@ufl.edu.

What is John Henderson's phone number?

SignalHire found multiple verified phone numbers for John Henderson: +1-205-***-**13, +1-480-***-**40, and +1-480-***-**98.

How do I contact John Henderson at PLEX Cyber?

You can reach John Henderson through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is John Henderson's professional background?

John Henderson has 12 years of professional experience. They have held roles including Cyber Security Analyst, and Signal Intelligence Collector at companies such as PLEX Cyber, and United States Marine Corps. Their education includes Bachelor of Science - BS from University of Maryland Global Campus, and Master's degree from University of Maryland Global Campus.

Is John Henderson's contact information up to date?

Yes. John Henderson's SignalHire profile was last updated on 5 August 2026, reflecting their current position as Senior Penetration Tester at PLEX Cyber.

John Henderson Namesakes

Name

Company

Position

John Henderson

Henderson Livestock

Owner

Get contacts

John Henderson

Cushman And Wakefield

Facility Manager

Get contacts

john henderson

Kush Corporation LLC

Chief Operating Officer

Get contacts

See more profiles

Similar profiles

Name

Company

Position

Ahmed Osama Gamea

BARQ Systems

Senior Penetration Tester

Get contacts

Abdulrahman Oyekunle

Moniepoint Group

Senior Penetration Tester

Get contacts

Irtza Ismail

SecurityWall

Senior Penetration Tester

Get contacts

Mumtaz Khan

Logiciel Services

Senior Penetration Tester

Get contacts

Dave Collins

NRG Energy

Senior Penetration Tester

Get contacts

Min Khant Ko

KBZ Bank

Senior Penetration Tester

Get contacts

See more profiles

Other employees at PLEX Cyber

Name

Company

Position

Nick Jones

PLEX Cyber

Senior Cybersecurity Engineer

Get contacts

See more profiles

Data Privacy

GDPR COMPLIANT

SignalHire complies with the General Data Protection Regulation (GDPR). SignalHire follows GDPR requirements, including but not limited to rights of data subjects to access, correct, or delete their personal information and supports the right to be forgotten.

CCPA COMPLIANT

SignalHire is CCPA-compliant and provides California residents the right to know, access, opt out, and request deletion of their personal data.