Dave Merkel

Chief Executive Officer

Dave Merkel is co-founder and CEO of Expel. With nearly 30 years in InfoSec, he was previously CTO at Mandiant and Global CTO at FireEye. He began as an Air Force special agent pursuing cybercriminals, then led AOL's technical security. He's frequently featured in major outlets and has been named to Washingtonian's "Tech Titans" six times since 2015, most recently in 2023.

Posts by Dave Merkel

Company news | 2 min read
Expel named a Leader in The Forrester Wave™: MDR Services, Q1 2025

Expel named a Leader in The Forrester Wave™: Managed Detection and Response Services, Q1 2025 and received 5/5 scores in 15 categories.

Company news | 2 min read
Expel welcomes Kevin Mandia to our board of directors

Security industry luminary joins our board to help guide us on the next chapter in our journey.

Current events | 2 min read
Our top five cybersecurity predictions for 2024

Here are our top five cybersecurity predictions for 2024 from Expel experts and leadership based on trends and current events.

Company news | 2 min read
A message from Expel’s co-founders

Our business is growing, but market shifts mean making difficult changes. We're restructuring our team and must sadly part ways with some.

MDR | 4 min read
Expel rides a Wave

Expel has been named a Leader in The Forrester Wave™: Managed Detection and Response, Q2 2023. Expel achieved the highest score in the Current Offering category at 4.6.

MDR | 3 min read
5 cybersecurity predictions for 2023

Gaze into the future of cybersecurity. Our 2023 predictions will help you prepare for the biggest trends and threats on the horizon.

Data & research | 2 min read
Great eXpeltations 2022: Cybersecurity trends and predictions

What are the biggest threats of 2022? Our Great eXpeltations report shares cybersecurity trends and SOC predictions, with actionable advice.

Company news | 4 min read
More good news in still unusual times

Expel hits a $1 billion valuation! Read what our founders say about this exciting Series E funding round, led by CapitalG, and what’s next.

Company news | 1 min read
Wow, they really like us

Expel is named a Leader in The Forrester Wave™: Managed Detection And Response, Q1 2021 report. Read why our CEO is so excited.

Company news | 3 min read
Good news in unusual times

We’re thrilled and humbled to be taking on a new round of funding, this time led by CapitalG.

Company news | 4 min read
Judgment, relationships and gratitude

We secured a new round of funding! Get a look at where we’ve been, what we’ve learned, and where we’re going on this exciting journey.

Expel culture | 6 min read
Dear fellow CEO: do these seven things to improve your org’s security posture

Need to get the security train back on the tracks? Our CEO’s got some pro tips on improving your org’s security ASAP.

Company news | 3 min read
Security for the other 99 percent

TL;DR: We got more money to keep doing the things we love doing. Huzzah! I will now rant a bit. Click away as you see fit.

MDR | 5 min read
Managed detection and response (MDR): symptom or solution?

An uncommonly clear review of what managed detection and response (MDR) is, where it came from and what it can/can't do for you.

Expel culture | 2 min read
The security people’s guide to Expel’s exe blog

Let us take just a couple minutes to introduce who we are and why you might care. Note: we said who we are, not what we do.