Brian M. Harrell

A connoisseur of fine security practices. Husband, father, Marine, and former Assistant Secretary at @DHSgov under POTUS 45.

[Brian M. Harrell @BrianMHarrell]

@FrankLaRose @berniemoreno @NRSC Absolutely!!

[Brian M. Harrell @BrianMHarrell]

@RickasaService @SANSInstitute It was a bad hair day

[Brian M. Harrell @BrianMHarrell]

Brian Harrell — Top Cybersecurity Leaders 2026 https://t.co/gT9yl8dD5L

[CyberDefenseMagazine @cyberdefensemag]

Leading the charge in digital defense! Congratulations to Brian Harrell for winning the Prestigious Top Global CISO Award 2025 at CyberDefenseCon, recognized for groundbreaking leadership and innovation in cybersecurity. 👏 #CyberDefenseCon2025 #CISO #Leadership

[Brian M. Harrell @BrianMHarrell]

Happy to be a champion for my favorite month!

[HSToday @HSTodayMag]

We’re proud to welcome Brian Harrell as Homeland Security Today’s lead for National Critical Infrastructure Security & Resilience Month (NCSRM)! Submit your thought leadership, best practices, or lessons learned to HSToday to be featured during November!

https://t.co/QMTPEgEIlm

[Brian M. Harrell @BrianMHarrell]

Avangrid is committed to reducing risk, protecting critical infrastructure, and of course working with our national security partners. As cyber threats increase in sophistication, we will continue to invest in protecting our customers, assets, and information

[Avangrid @Avangrid]

Avangrid Hosts Fall Threat & Intelligence Symposium Focused on Protecting Energy Sector

Event brings together national security leaders, intelligence experts and technology innovators to address evolving threats

More: https://t.co/NNODs6hWxn

[Brian M. Harrell @BrianMHarrell]

Dark day for America

[Brian M. Harrell @BrianMHarrell]

The fear and threat we all knew was coming…

[Ashley Papa @AshleyMPapa]

‘Open borders’ under Biden could help Iran retaliate with US terror sleeper cells: former FBI boss. ⁦@juliabonavita13⁩ ⁦@danimwallace⁩ report #Foxnews https://t.co/TOogs2ciBF

[Brian M. Harrell @BrianMHarrell]

@CISAMarci @CISAgov Let’s do this!

[Brian M. Harrell @BrianMHarrell]

Fantastic night!

[Brian M. Harrell @BrianMHarrell]

@ALT_uscis This is the dumbest thing I’ve read all day. That is not Adam Stahl.

[Brian M. Harrell @BrianMHarrell]

Awesome weekend of Inaugural Balls! America First @PAGOP

[Danielle Wallace @danimwallace]

New Orleans' #Terroristattack on Bourbon St New Year's revelers is not the 1st time suspected terrorists used car-ramming to kill. Recently a German Christmas market saw a similar attack. Here's a summary of when crowds were targeted the same way before. https://t.co/9Utfg4ATFa

[Brian M. Harrell @BrianMHarrell]

Yep

[Danielle Wallace @danimwallace]

White House National Security spox says "no evidence of any foreign-based involvement" in New Jersey's drone sightings, claiming many are lawfully "manned aircraft." Ex-Trump DHS official @Brian4PA says Kirby fumbled the ball on building public trust.

https://t.co/lYMMuS7H7n

[Brian M. Harrell @BrianMHarrell]

My newest OpEd is out! Co-written with Sachin from @security_score

[CyberScoop @CyberScoopNews]

In a world where every digital connection has the potential to be a vulnerability, the stakes for cybersecurity have never been higher. https://t.co/0S7LSfS6au

[Brian M. Harrell @BrianMHarrell]

@maxschachter @realDonaldTrump @SchoolSafetyGov We sure did!! Thanks for your support, Max

[Brian M. Harrell @BrianMHarrell]

Let’s get to work. Mandate? Sure. But, people just want to feel safe again in America.

[Brian M. Harrell @BrianMHarrell]

Election Day tradition! Making cookies (in the shape of PA) with the wife, and some good American bourbon.

[Brian M. Harrell @BrianMHarrell]

Going door-to-door across Pennsylvania this weekend! Let’s bring this home. @ScottPresler @PAGOP

[Brian M. Harrell @BrianMHarrell]

My newest OpEd released today!

[Utility Dive @UtilityDive]

Opinion - Achieving energy resilience: Deep insight into threats, assets and national policy is the first step https://t.co/FLyJUyMrA5