Listen to this Post
A New Kind of Endpoint Security Nightmare
Endpoint detection and response platforms are supposed to be among the strongest defenses standing between an organization and a successful cyberattack. They monitor processes, inspect suspicious behavior, protect credentials, and often operate with privileges far beyond those granted to ordinary applications.
But what happens when an attacker discovers a way to turn that trusted security software against the machine it was designed to protect?
That is the uncomfortable question raised by new research from Akamai, which demonstrated a “Bring Your Own EDR” attack involving SentinelOne on Windows. The technique showed how a legitimate, highly privileged endpoint security agent could potentially be abused as a stepping stone into some of Windows’ most protected security boundaries.
Why This Research Matters
The discovery is particularly important because the attack does not depend on the classic ingredients associated with sophisticated Windows exploitation. There was no need for a malicious kernel driver, a Windows kernel vulnerability, or a traditional memory-corruption exploit.
Instead, the researchers combined legitimate administrative privileges, an exposed SentinelOne COM interface, the privileged execution context of the EDR agent, and previously documented techniques involving Windows Protected Process Light, or PPL.
That combination created something much more subtle: a trusted security product became part of the attack chain.
The Bigger Security Lesson
Modern endpoint security products have extraordinary authority because they need it. An EDR agent cannot effectively protect a workstation if malware can simply terminate its process, modify its configuration, or interfere with its telemetry.
The same privilege that makes an EDR powerful, however, makes vulnerabilities in that EDR disproportionately dangerous.
This is one of the defining cybersecurity challenges of 2026. Attackers are increasingly looking beyond operating-system vulnerabilities and searching for weaknesses in the security products themselves.
The
What Is a “Bring Your Own EDR” Attack?
The phrase “Bring Your Own EDR” describes an attack concept in which an adversary abuses a legitimate endpoint security product already trusted by Windows rather than attempting to defeat security controls through conventional malware alone.
Instead of installing obviously malicious software and fighting the EDR directly, the attacker attempts to make the security product perform privileged operations on their behalf.
It is similar to abusing a trusted employee account rather than breaking through a locked door.
The difference is that the trusted employee in this case is the endpoint security stack itself.
SentinelOne at the Center of the Research
According to
Researcher Shahak Morag identified an interface called SentinelHelper.1, including a Dump method capable of creating a process dump when supplied with a process identifier.
The important detail was the context in which that operation executed.
Access to the interface required local administrator privileges, but the requested operation was handled through SentinelOne’s protected context. That distinction allowed the researchers to cross a security boundary that ordinary administrator-controlled processes would not normally be able to cross.
PPL Was Supposed to Stop This
Windows Protected Process Light is specifically designed to make sensitive processes substantially harder for ordinary applications to inspect, modify, debug, or terminate.
Security products frequently use PPL protections because they need to defend themselves against malware running with powerful local privileges.
Microsoft
That means gaining administrator privileges is not automatically equivalent to obtaining unrestricted control over every protected security process.
The SentinelOne research demonstrated why a privileged security product can complicate that assumption.
The COM Interface Became the Bridge
The exposed diagnostic functionality effectively created a bridge between an administrator-controlled process and a privileged EDR context.
The researchers could request a process dump through SentinelOne’s interface and have the operation performed with the security product’s elevated authority.
That changed the security equation.
Rather than directly attacking the PPL mechanism, the researchers used a trusted security component as an intermediary.
This is an important pattern for defenders to understand because it does not look like a conventional exploit at first glance.
From Process Dumping to PPL Access
A process dump alone does not automatically mean arbitrary code execution.
The Akamai researchers therefore combined the SentinelOne primitive with earlier public research into Windows PPL protections.
Their work involved extracting relevant process information and secrets from a protected target before developing an injection workflow capable of turning the recovered information into practical execution.
This distinction is critical.
The research was not simply about reading a protected process. It demonstrated how multiple individually complex techniques could be chained together to produce a much more serious outcome.
The Engineering Challenges Were Significant
Getting code into a protected process is considerably harder than placing bytes somewhere in memory.
The researchers described several technical obstacles involving memory protection, relocation processing, shellcode mapping, and dependency loading.
These are precisely the kinds of barriers that normally prevent an incomplete injection technique from becoming reliable execution.
The team refined the process until it could map code into a PPL environment while dealing with the limitations imposed by Windows’ protection mechanisms.
Unsigned Code Execution Changes the Equation
One of the most significant aspects of the research was the reported ability to execute unsigned code inside a PPL context.
The researchers avoided relying on unsigned runtime DLL dependencies by statically compiling the payload.
That approach reduced the number of external components that Windows and the security stack would have to validate.
The result was a demonstration that an attacker could potentially leverage the trusted EDR context to achieve something that conventional unsigned malware would struggle to accomplish directly.
No Kernel Exploit Was Required
This is perhaps the most alarming part of the demonstration.
The chain did not require a malicious kernel driver.
It did not depend on exploiting a Windows kernel vulnerability.
It did not rely on a conventional memory-corruption vulnerability in Windows itself.
Instead, the attack chain relied on the interaction between an administrator-accessible interface, a highly privileged security product, and existing Windows trust relationships.
That is a fundamentally different threat model.
Administrator Privileges Still Matter
It is important not to misrepresent the finding.
The demonstrated interface required local administrator privileges.
An attacker who already controls a machine as an administrator is already in a highly dangerous position.
However, PPL exists precisely because security-sensitive processes require additional protection against local interference.
The significance of the research therefore lies in the ability to use the EDR’s privileged context to cross protections that ordinary administrator-level activity would otherwise encounter.
The EDR Installation Process Was Also Investigated
Akamai’s research went beyond the runtime behavior of the SentinelOne agent.
The researchers also examined the installation and registration process.
Under the tested conditions, they found that crafted registration information could potentially be accepted by the installer, resulting in an agent that appeared secure locally while lacking normal functional connectivity with its management infrastructure.
That observation highlights a broader problem.
Security begins before an agent starts monitoring the endpoint.
It begins with installation, enrollment, registration, configuration, updates, certificates, management endpoints, and trust establishment.
Why Enrollment Security Matters
Organizations often treat security-agent installation as inherently trustworthy.
That assumption can be dangerous.
If an attacker can manipulate the enrollment process, fabricate registration information, or create a local agent that looks legitimate without being properly connected to its management environment, the security product itself can become misleading.
A security agent that appears healthy while silently losing its management connection can create a dangerous blind spot.
Management Communication Can Become Another Attack Surface
The research also explored the possibility of disrupting management communication by redirecting the configured management hostname to localhost through local name-resolution mechanisms.
The important concept is not the specific redirection technique.
The broader lesson is that an
If an attacker can isolate the endpoint from the cloud while preserving the appearance of normal local operation, defenders may lose visibility precisely when they need it most.
The Silent Failure Problem
Security teams frequently monitor whether an EDR agent is installed and running.
That is not necessarily enough.
A more mature security strategy asks whether the agent is actually communicating with its management plane, receiving policy updates, uploading telemetry, reporting health information, and maintaining expected cryptographic and enrollment relationships.
A process can be running while the security function it represents is effectively impaired.
SentinelOne Fixed the Reported Issue
Akamai stated that the reported SentinelOne issue was addressed in Agent version 26.1.1.
Organizations using SentinelOne should therefore verify their deployed agent versions and follow the vendor’s current remediation guidance rather than relying solely on the assumption that the endpoint protection software is already current.
Patching an EDR is not optional maintenance.
It is part of the
The
There is an uncomfortable paradox at the heart of modern endpoint security.
The more powerful a security product becomes, the more valuable it becomes to attackers.
An EDR needs privileged access to defend the system.
That privileged access makes its interfaces extremely attractive targets.
A vulnerability in an ordinary desktop application might compromise one user’s application.
A vulnerability in an EDR may potentially compromise the mechanism designed to protect the entire endpoint.
Why Security Products Need Security Products
This research reinforces an emerging idea in enterprise security: security tools themselves require continuous monitoring.
Organizations should not assume that an EDR is inherently trustworthy simply because it carries the name of a respected security vendor.
The EDR agent should be treated as privileged infrastructure.
Its installation directories, services, drivers, APIs, COM interfaces, update mechanisms, management channels, and configuration stores deserve the same scrutiny applied to other critical administrative components.
Deep Analysis
Understanding the Defensive Attack Surface
For defenders, the important takeaway is to map the complete EDR attack surface rather than concentrating exclusively on the agent’s executable files.
A useful defensive inventory should include:
Windows services associated with the EDR.
Local administrator groups and privileged accounts.
COM interfaces exposed by security software.
EDR installation and configuration directories.
Agent registration and enrollment mechanisms.
Cloud management endpoints.
Local DNS and proxy configuration.
EDR update channels.
Security-agent health and telemetry status.
Protected-process configuration.
Endpoint security policy changes.
Check SentinelOne Agent Versions
Administrators can begin by identifying installed SentinelOne-related software through Windows inventory mechanisms.
For example, PowerShell can be used to review installed applications:
Get-ItemProperty `
HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\,
HKLM:\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ |
Where-Object { $_.DisplayName -match "SentinelOne|Sentinel Agent" } |
Select-Object DisplayName, DisplayVersion, Publisher
The goal is not to exploit the product but to identify endpoints that may require remediation.
Review Security Services
Security teams can also review services associated with endpoint protection:
Get-Service |
Where-Object {
$_.DisplayName -match "Sentinel|Security|Defender"
} |
Select-Object Status, Name, DisplayName
Unexpected service changes should be investigated against the organization’s approved baseline.
Inspect Local Administrators
Because the demonstrated attack requires administrator-level access, reducing unnecessary local administrator privileges remains one of the strongest defensive measures.
A basic Windows review can include:
Get-LocalGroupMember -Group "Administrators"
Organizations should investigate accounts that do not have a documented administrative requirement.
Check Windows Defender Status
Where Microsoft Defender is deployed, administrators can review its current state with:
Get-MpComputerStatus | Select-Object AMServiceEnabled, AntivirusEnabled, RealTimeProtectionEnabled, IsTamperProtected
This provides useful visibility into whether expected protection features remain enabled.
Review Recent Windows Security Events
Security teams should also examine privileged-account activity and suspicious process behavior in Windows event logs.
For example:
Get-WinEvent -FilterHashtable @{
LogName = 'Security'
Id = 4672
} -MaxEvents 50
Event 4672 can help identify sessions assigned sensitive privileges, although it should be correlated with identity, endpoint, timing, and other telemetry rather than treated as proof of malicious activity.
Look for EDR Health Anomalies
A more advanced detection strategy should correlate local agent health with cloud-side telemetry.
Potential indicators include:
Agent process running but no recent telemetry.
Unexpected changes to EDR configuration.
Sudden loss of management connectivity.
New local administrator accounts.
Security-agent service restarts outside maintenance windows.
Unexpected changes to DNS configuration.
Unauthorized modifications to security-product directories.
Repeated agent registration attempts.
Security tooling installed outside approved deployment systems.
Hunting for Suspicious Process-Dump Activity
Organizations should pay particular attention to unexpected process-dump creation involving security-sensitive processes.
A generic PowerShell search for dump-related files can provide an initial hunting signal:
Get-ChildItem -Path C:\ -Filter .dmp -Recurse -ErrorAction SilentlyContinue | Select-Object FullName, Length, LastWriteTime
This is not a definitive detection mechanism because legitimate applications also generate dump files.
The value comes from correlation.
A dump created near a privileged-account event, EDR service change, management disconnect, or suspicious process execution deserves much more attention than an isolated diagnostic dump.
What Security Teams Should Do Now
Upgrade the EDR Agent
Organizations using affected SentinelOne versions should upgrade to Agent 26.1.1 or later, subject to the vendor’s current guidance and compatibility requirements.
Security teams should verify the actual version deployed across the fleet rather than assuming that automated update systems have reached every endpoint.
Reduce Local Administrator Exposure
The demonstrated technique reinforces the importance of least privilege.
Users should not routinely operate with local administrator privileges unless there is a documented operational requirement.
Privileged credentials should also be protected from credential theft and unnecessary reuse.
Audit EDR Installation Activity
Security teams should monitor for unusual security-agent installations, re-enrollment attempts, unexpected registration events, and modifications to EDR installation directories.
An attacker who understands that defenders trust the EDR may deliberately attempt to manipulate the product rather than disable it outright.
Monitor the Management Plane
EDR telemetry should be monitored from both sides.
The endpoint should report that it is connected and healthy.
The management platform should independently confirm that the endpoint is actually communicating.
This two-sided validation can help detect situations in which an agent remains locally active while its cloud visibility has been disrupted.
Treat Security Software as Critical Infrastructure
Security products should receive the same hardening attention as domain controllers, identity systems, backup infrastructure, and other high-value assets.
Their interfaces should be minimized where possible.
Their privileges should be carefully controlled.
Their updates should be monitored.
Their configurations should be protected.
And their failures should generate alerts.
What Undercode Say:
1. The Real Target Is Trust
The most important element of this research is not SentinelOne itself.
It is trust.
2. Security Software Is Extremely Powerful
EDR platforms operate with privileges ordinary applications cannot obtain.
3. Privilege Creates Risk
Every additional privilege creates another potential attack surface.
4. PPL Changes the Security Equation
Protected Process Light exists specifically to make security-sensitive processes harder to manipulate.
5. Trusted Contexts Can Become Attack Primitives
If a trusted component performs an operation for an attacker, traditional security boundaries can become less meaningful.
- The Attack Chain Is More Important Than One Interface
The COM interface alone does not explain the severity.
The significance comes from chaining several capabilities together.
7. Security Vendors Are Becoming High-Value Targets
Attackers increasingly understand that compromising security infrastructure can provide more value than compromising ordinary software.
8. EDR Self-Protection Deserves Special Attention
Self-protection mechanisms must defend against attackers who already possess significant local privileges.
- Administrator Does Not Always Mean PPL-Level Control
Windows deliberately introduces additional barriers around sensitive security processes.
10. Security Boundaries Must Be Tested Together
An interface that appears harmless in isolation may become dangerous when combined with another trusted component.
11. Installer Security Is Security
Enrollment and installation should never be treated as secondary engineering problems.
12. Registration Is a Trust Decision
An endpoint security agent must establish trust before it can safely become part of the defensive architecture.
13. Telemetry Is a Security Control
Losing cloud visibility can be almost as dangerous as losing local protection.
- A Running Agent Is Not Proof of Protection
Organizations need to verify actual health and communication.
15. Local DNS Can Matter to Security
Name resolution can influence whether critical security components can communicate with management infrastructure.
16. Security Teams Need Independent Verification
The endpoint should not be the only source of truth about its own security state.
17. EDR Should Be Monitored by EDR
Organizations should use independent telemetry where possible to detect tampering with their primary endpoint security platform.
18. Least Privilege Remains Powerful
Reducing local administrator access directly limits the prerequisites for techniques like this.
19. Privileged Access Management Matters
Administrative sessions should be temporary, controlled, logged, and attributable.
20. Security Tools Need Attack-Surface Management
Organizations should maintain inventories of security-agent services, interfaces, directories, and management paths.
- Vendor Trust Is Not a Security Strategy
A reputable vendor can still ship vulnerable software.
22. Patching Must Include Security Products
An organization that patches Windows but ignores its EDR is leaving a critical gap.
- Security Agents Should Have Strong Enrollment Controls
Enrollment should resist impersonation, fabricated registration data, and unauthorized local configuration.
24. Cloud Connectivity Should Be Continuously Validated
An endpoint that silently stops reporting should become a security event.
- Attackers Do Not Always Need Their Own Malware
Sometimes the most useful tool is already installed.
- This Is the Security-Product Supply Chain Problem
The software protecting an enterprise has become part of the enterprise’s trusted computing base.
27. The Trusted Computing Base Is Expanding
Modern environments depend on identity agents, EDRs, VPN clients, backup agents, management agents, and cloud connectors.
28. Every Privileged Agent Adds Complexity
Complexity creates opportunities for unexpected interactions.
29. Defensive Architecture Must Assume Failure
Security products should be designed and deployed with the assumption that they can eventually be targeted.
30. Detection Must Look for Manipulation
Security teams should hunt for configuration changes, service restarts, telemetry gaps, and suspicious administrative behavior.
31. Endpoint Security Needs Independent Signals
No single security product should be the
32. PPL Is Valuable but Not Magical
Protected processes raise the difficulty of attacks, but trust relationships can introduce alternate paths around protections.
33. Attack Chains Are the Future
The most dangerous vulnerabilities may be combinations of individually limited capabilities.
34. Defensive Testing Should Mirror That Reality
Red teams should test how EDR interfaces behave when attackers already possess administrative privileges.
35. SOC Teams Need Better Context
An unexplained EDR disconnect should not be buried among routine endpoint alerts.
36. Security-Agent Integrity Should Be Measurable
Organizations should know which version is running, whether policies are intact, and whether telemetry is flowing.
37. Patch Compliance Should Be Continuous
A dashboard showing
38. Endpoint Security Is Now Critical Infrastructure
The EDR is no longer simply an application installed on a computer.
It is part of the
39. Attackers Will Continue Going Upstream
As traditional operating-system defenses improve, security products themselves become increasingly attractive targets.
40. The Ultimate Lesson
The tools we trust most deserve some of our greatest scrutiny.
✅ SentinelOne Agent 26.1.1 Is Identified as the Fix
The supplied report states that the SentinelOne issue was fixed in Agent version 26.1.1.
Organizations should nevertheless confirm the exact affected versions and remediation instructions through current vendor guidance before deploying changes.
✅ The Research Involved Protected Process Light
The article accurately describes PPL as a Windows mechanism intended to provide additional protection to sensitive processes.
The
✅ The Demonstration Did Not Require a Kernel Exploit
The supplied research specifically states that the chain did not rely on a malicious kernel driver or Windows kernel vulnerability.
That makes the finding particularly interesting because it demonstrates how trusted user-mode components and security-product interfaces can become powerful attack primitives.
❌ “Administrator Means Full Control” Would Be Misleading
Although the demonstrated interface required local administrator privileges, Windows security boundaries such as PPL exist to prevent administrators and ordinary processes from freely manipulating certain protected components.
The research is therefore better understood as a demonstration of how privileged software can potentially bridge security boundaries, not as proof that every administrator automatically has unrestricted PPL control.
❌ EDR Bypass Does Not Mean Every Endpoint Is Compromised
The research demonstrates an attack technique and a vulnerable configuration, not evidence that every SentinelOne deployment has been compromised.
The practical risk depends on factors including software version, attacker access, endpoint configuration, privilege controls, and other defensive layers.
Prediction
(+1) EDR Security Will Become a Major Research Battlefield
As endpoint protection products gain more privileges and integrate more deeply with operating systems, security researchers will increasingly examine them as critical attack surfaces.
(+1) Security Vendors Will Harden Local Interfaces
Future EDR platforms are likely to place greater emphasis on authentication, authorization, interface minimization, secure diagnostics, and strict separation between administrative capabilities and protected execution contexts.
(+1) Organizations Will Monitor EDR Health Independently
Enterprises will increasingly validate whether their security agents are genuinely communicating and enforcing policy instead of merely checking whether an agent process is running.
(+1) “Security of Security Tools” Will Become a Standard Discipline
The industry is moving toward a model in which EDR, identity agents, VPN clients, backup software, and other privileged tools are treated as critical infrastructure rather than ordinary endpoint applications.
(-1) Attackers Will Increasingly Target Trusted Security Software
The downside is equally clear: compromising or manipulating a security product can provide attackers with an unusually powerful position inside an endpoint.
(-1) Security Blind Spots Could Become Harder to Notice
If attackers learn to preserve the appearance of a healthy EDR while disrupting its telemetry or management relationship, conventional endpoint-health dashboards may become less reliable.
The Bigger Future of Endpoint Defense
The SentinelOne research points toward a broader shift in cybersecurity.
The next generation of endpoint attacks may not always begin with a malicious executable, a zero-day, or a vulnerable driver. They may begin with something that defenders already trust.
An attacker with administrative access does not necessarily need to destroy the EDR.
They may instead attempt to convince the EDR to work for them.
That is what makes this class of research so important.
Security Tools Must Earn Their Trust
For years, cybersecurity strategy has revolved around installing more protection: more sensors, more agents, more monitoring, more automated response.
But every privileged security component also expands the trusted computing base.
The lesson is not to remove EDR.
The lesson is to understand exactly what the EDR can do, which interfaces expose those capabilities, who can invoke them, how those operations are authenticated, and what happens when an attacker already controls part of the endpoint.
The New Rule for Defenders
Security teams should no longer ask only, “Can our EDR detect the attacker?”
They should also ask:
“What could an attacker make our EDR do?”
That question represents a more mature approach to endpoint defense.
The strongest security product in the environment can also become one of its most attractive attack surfaces.
And when the
▶️ Related Video (78% Match):
🕵️📝Let’s dive deep and fact‑check.
🎓 Live Courses & Certifications:
Join Undercode Academy for Verified Certifications
🚀 Request a Custom Project:
Secure, high-velocity infrastructure and disruptive technological engineering. Contact our engineering team for high-tier development and proprietary systems:
[email protected]
💎 Smart Architecture | 🛡️ Secure by Design | ⭐ Trusted by Thousands
References:
Reported By: cyberpress.org
Extra Source Hub (Possible Sources for article):
https://www.quora.com/topic/Technology
Wikipedia
OpenAi & Undercode AI
Image Source:
Unsplash
Undercode AI DI v2
🔐JOIN OUR CYBER WORLD [ CVE News • HackMonitor • UndercodeNews ]
📢 Follow UndercodeNews & Stay Tuned:
𝕏 formerly Twitter 🐦 | @ Threads | 🔗 Linkedin | 🦋BlueSky | 🐘Mastodon | 📺Youtube
