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Donald E. Hester Email & Phone Number

Cybersecurity Ambassador, Working Together to Make the World Cybersafe at Cybersecurity and Infrastructure Security Agency
Location: Pleasant Hill, California, United States 16 work roles 5 schools
1 work email found @cityoflivermore.net 7 phones found area 925 LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 7 phones

Work email d****@cityoflivermore.net
Direct phone (925) ***-****
LinkedIn Profile matched
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Current company
Cybersecurity and Infrastructure Security Agency
Role
Cybersecurity Ambassador, Working Together to Make the World Cybersafe
Location
Pleasant Hill, California, United States
Company size
1926 employees

Who is Donald E. Hester? Overview

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Quick answer

Donald E. Hester is listed as Cybersecurity Ambassador, Working Together to Make the World Cybersafe at Cybersecurity and Infrastructure Security Agency, a company with 1926 employees, based in Pleasant Hill, California, United States. AeroLeads shows a work email signal at cityoflivermore.net, phone signal with area code 925, and a matched LinkedIn profile for Donald E. Hester.

Donald E. Hester previously worked as Cybersecurity Advisor at Cybersecurity And Infrastructure Security Agency and Cybersecurity Advocate Blogger and Speaker at Colleran Dooley. Donald E. Hester holds Master'S In Christian Apologetics, School Of Arts And Sciences from Biola University.

Company email context

Email format at Cybersecurity and Infrastructure Security Agency

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{first_initial}{last}@cityoflivermore.net
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Profile bio

About Donald E. Hester

With over 25 years of experience as an Information Systems and Cybersecurity professional, I've become skilled at bridging the divide between cyber risk and business objectives. Throughout my career, I've overseen cyber risk posture, operations and technological direction to strategically protect organizations in an ever-evolving cybersecurity landscape. My expertise in government cybersecurity spans 180+ consulting and audit clients across the U.S., with a focus on local government.As a cybersecurity leader, I have been at the forefront of defense for organizations, integrating my expert understanding of risk tolerance and regulatory requirements into security-focused technical solutions. These solutions have successfully protected valuable information and ensured the continuity operations. I prioritize building a strong ethical culture among my teams, ensuring that business ethics are fully integrated into the organization.I'm committed to making the world a safer place through education and collaboration. I'm seeking to leverage my extensive experience to give back to the community and help businesses, governments, and individuals build a cybersafe world.

Listed skills include Security, Information Security, Computer Security, Cissp, and 43 others.

Current workplace

Donald E. Hester's current company

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Cybersecurity and Infrastructure Security Agency
Cybersecurity And Infrastructure Security Agency
Cybersecurity Ambassador, Working Together to Make the World Cybersafe
Pleasant Hill, CA, US
Website
cisa.gov
Employees
1926
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16 roles

Donald E. Hester work experience

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

Cybersecurity Advisor

Current
Cybersecurity And Infrastructure Security Agency

Cybersecurity Advisors (CSAs) offer cyber security assistance to critical infrastructure owners and operators and State, Local, Territorial, and Tribal (SLTT) officials. CSAs introduce organizations to various CISA cyber security products and services, along with other public and private resources, and act as liaisons to CISA cyber programs. CSAs can.

Jun 2023 - Present

Cybersecurity Advocate Blogger And Speaker

Current
Colleran Dooley

Advocate, Ambassador, Blogger and Speaker for: League of California Cities, Association of Government Accountants (AGA) Silicon Valley, (ISC)2 East Bay Chapter, Leadership Contra Costa, California Association of Public Retirement Systems (CALaPRS), University of San Francisco, San Francisco State University, Walnut Creek Chamber of Commerce, Pleasant Hill.

Jan 2004 - Present

Technical Learning Guide (Tlg)

Colleran Dooley

Technical Learning Guide for various conferences and events. Services provided to: Microsoft, Tableau, HynesITe Inc., HOL Systems, Learn on Demand Systems, Hands-On Learning Solutions LLC, & Skillable.

May 2006 - May 2022

Instructor

Colleran Dooley

Delivered cybersecurity courses including NIST Risk Management Framework (RMF), Certified Authorization Professional (CAP) Certification, cyber risk management, Certified Information Systems Security Professional (CISSP) certification, Certified Information Systems Auditor (CISA) certification, and Microsoft Official Curriculum.California Joint Powers Risk.

Jan 2004 - Sep 2020

Director Of Information Systems & Cybersecurity

Maze & Associates

Pleasant Hill, CA, US

For over 25 years at Maze & Associates, I played progressive directorship roles including Cybersecurity Consultant, Director of Information Systems Audit, and Director of Information Systems & Cybersecurity. Among my most notable accomplishments was introducing a ransomware risk assessment process for local governments - customizing a highly-attainable and.

Jan 1995 - Nov 2020

Instructor

Las Positas College

Livermore, CA, US

Computer Science | Computer Networking Technology | Computer Information Systems

Aug 2016 - May 2020

Instructor

San Diego Community College District (Sdccd)

San Diego, California, US

Microsoft IT Academy. Online instructor teaching Security+ and Microsoft certification courses. Member of CTEA Committee, INWT Advisory Committee, CCCAOE

Jan 2005 - May 2016

Instructor

University Of San Francisco

San Francisco, CA, US

School of Business and Professional Studies, IT Audit and Forensics Instructor

Sep 2010 - Dec 2010

Cybersecurity Consultant

Nasa Ames Research Center

Moffett Field, California, US

Worked as a contractor for SecureNet Technologies, QSS, Perot Systems and Dell Perot Systems. Performing various tasked related to C & A (certification and accreditation) package completion, project management, information assurance related to FISMA compliance and NIST risk management framework.

Aug 2006 - Nov 2010

Instructor

Los Medanos College

Pittsburg, CA, US

Instructor for the Microsoft IT Academy and Information Security classesMember Computer Science Advisory BoardDevelop and outline new courses in information security and Microsoft networking curriculumAssist the Regional Microsoft IT Academy Champion in her dutiesPanel Expert for Contra Costa County College District Active Directory Migration Committee

Oct 2001 - Jun 2006

Lance Corporal / Field Radio Operator

United States Marine Corps

Washington, DC, US

MCCES Marine Corps Communications and Electronics School 1st & 3rd Longshoreman Plts (REIN), B&P OPSCO, 4th LANDSPTBN, 4th FSSG, 4th MAR DIVOther topics of study: Electronic Warfare, FMF Communications, Marine Corps LeadershipHonorable Discharge

May 1991 - Dec 1998

Host

Bold Knight Inn

Host, Busboy, Kitchen Prep

Jan 1987 - May 1991
Team & coworkers

Colleagues at Cybersecurity and Infrastructure Security Agency

Other employees you can reach at cisa.gov. View company contacts for 1926 employees →

PO Pete Owen Pete Owen Colleague at Cybersecurity And Infrastructure Security AgencySyracuse, New York, United States, United States View → JD Jordan Dent Jordan Dent Colleague at Cybersecurity And Infrastructure Security AgencyUnited States, United States View → KN Kriztian Noel Dela Cruz Kriztian Noel Dela Cruz Colleague at Cybersecurity And Infrastructure Security AgencyWashington DC-Baltimore Area, United States View → EG Elijah Gartrell Elijah Gartrell Colleague at Cybersecurity And Infrastructure Security AgencyWashington DC-Baltimore Area, United States View → NB Nate B. Nate B. Colleague at Cybersecurity And Infrastructure Security AgencyUnited States, United States View → ZO Zola Ortiz Zola Ortiz Colleague at Cybersecurity And Infrastructure Security AgencyLawndale, California, United States, United States View → DS Dan Strachan Dan Strachan Colleague at Cybersecurity And Infrastructure Security AgencyAnnapolis, Maryland, United States, United States View → TH Tess Hyre, Mba Tess Hyre, Mba Colleague at Cybersecurity And Infrastructure Security AgencyWashington DC-Baltimore Area, United States View → MC Michael Chauncey Michael Chauncey Colleague at Cybersecurity And Infrastructure Security AgencyArlington, Virginia, United States, United States View → SS Sasha S. Sasha S. Colleague at Cybersecurity And Infrastructure Security AgencyHerndon, Virginia, United States, United States View →
5 education records

Donald E. Hester education

Master'S In Christian Apologetics, School Of Arts And Sciences

Biola University

Bs, Security Management With A Concentration In Information Security

American Military University

Associate Of Arts - Aa, Liberal Arts

Los Medanos College

Education record

Leadership Contra Costa

Certificate, Communications

Marine Corps Communications And Electronic School
FAQ

Frequently asked questions about Donald E. Hester

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

What company does Donald E. Hester work for?

Donald E. Hester works for Cybersecurity and Infrastructure Security Agency.

What is Donald E. Hester's role at Cybersecurity and Infrastructure Security Agency?

Donald E. Hester is listed as Cybersecurity Ambassador, Working Together to Make the World Cybersafe at Cybersecurity and Infrastructure Security Agency.

What is Donald E. Hester's email address?

AeroLeads has found 1 work email signal at @cityoflivermore.net for Donald E. Hester at Cybersecurity and Infrastructure Security Agency.

What is Donald E. Hester's phone number?

AeroLeads has found 7 phone signal(s) with area code 925 for Donald E. Hester at Cybersecurity and Infrastructure Security Agency.

Where is Donald E. Hester based?

Donald E. Hester is based in Pleasant Hill, California, United States while working with Cybersecurity and Infrastructure Security Agency.

What companies has Donald E. Hester worked for?

Donald E. Hester has worked for Cybersecurity And Infrastructure Security Agency, Colleran Dooley, City Of Livermore, Maze & Associates, and Las Positas College.

Who are Donald E. Hester's colleagues at Cybersecurity and Infrastructure Security Agency?

Donald E. Hester's colleagues at Cybersecurity and Infrastructure Security Agency include Pete Owen, Jordan Dent, Kriztian Noel Dela Cruz, Elijah Gartrell, and Nate B..

How can I contact Donald E. Hester?

You can use AeroLeads to view verified contact signals for Donald E. Hester at Cybersecurity and Infrastructure Security Agency, including work email, phone, and LinkedIn data when available.

What schools did Donald E. Hester attend?

Donald E. Hester holds Master'S In Christian Apologetics, School Of Arts And Sciences from Biola University.

What skills is Donald E. Hester known for?

Donald E. Hester is listed with skills including Security, Information Security, Computer Security, Cissp, Training, Leadership, It Management, and Networking.

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