An attacker lands in your environment.

It’s not ideal—but hey, you’ve done the right things. You’ve got a hardened stack. You’ve even deployed something bulletproof like SentinelOne.

You’re sleeping well. Until you read this.

There’s a Little Trick to Disable SentinelOne Completely

And it’s been hiding in plain sight for years.

No malware required. No fancy rootkits. Just a clever manipulation of how the SentinelOne agent installs and upgrades.

Picture this: you’re in your house with a top-of-the-line security system. Cameras. Motion detectors. Smart locks. But there’s one flaw. When the system updates itself, it powers down for a few minutes.

That’s when someone walks in your front door, ransacks the place, and leaves.

No alarm. No cameras. No alert.

That’s exactly what this trick does.

“Bring Your Own Installer” – The Bypass in Plain Sight

A threat actor gets local admin access—maybe through a known vulnerability. They launch a SentinelOne upgrade or downgrade using a legit, signed installer. SentinelOne politely shuts itself down to install the update.

And then? Before it spins back up, the attacker kills the update process. Mid-upgrade. Game over.

SentinelOne doesn’t recover. It’s offline. Silent. The management console shows nothing. The endpoint’s wide open.

And It’s So Easy It’s Scary

No shady drivers. No signed malware. No crazy exploits. Just exploiting a predictable sequence in the agent’s update cycle and punching it in the gut before it finishes.

Want to know the worst part?

This isn’t brand new. It’s been possible for years. Most environments aren’t configured to block it. And most MSPs—maybe even yours—have no idea if it’s ever been used.

Now ask yourself this:

If an attacker used this technique in one of your client environments, could you prove:

  • That your stack was deployed correctly?
  • That you had reasonable protections in place?
  • That you delivered a standard of care?

If you can’t say yes without flinching, you’ve got a problem.

Because when the breach happens—and someone pulls your name into a lawsuit—you need evidence. Not just that you meant well. That you actually did the work. That you followed a standard. That you can prove it.

What Happens If You Can’t?

Simple. You look weak. Vulnerable. You look like a target.

If your “evidence” is a few configuration screenshots, an email string, and a three-month-old QBR deck, the lawyers are going to rip you apart.

This is what they do. They posture. They build a case that you were negligent. And if you can’t knock it down with hard documentation, they win.

This Is the Reality of Modern Cyber Risk

The attacker isn’t your only problem.

Your client’s lawyer is.

Their insurance company is.

Your own insurance carrier might be.

And if you’re not tracking how you deliver, measure, and prove your security, you’re not secure—you’re exposed.

That’s Why You Need a Cyber Liability Program

Not another tool. Not a new sensor.

A system to document your stack.

A structure to record client decisions.

A framework to prove you did everything right.

Because when an exploit like this gets used—something totally legitimate-looking—you need a clear, defensible record that shows: we did our job, we followed best practices, we aren’t the problem.

So… Are You Ready?

If you’re not sure—or if your gut just dropped—you need to fix that now.

We’ll perform a Cyber Liability Assessment.

We’ll show you where you’re exposed.

We’ll help you lock it down before your name ends up in court documents.

Schedule your assessment today 

Because when the alarm system quietly shuts down, the last thing you want is to be left holding the bag—and the lawsuit.