Hey folks, been running Cybereason in our AWS environment for a few months now, mostly for EDR on our EKS workloads. When they announced the new ransomware rollback feature, I had to spin it up in our test environment. Wanted to share some hands-on thoughts, especially from a cloud/container angle.
The core idea is solid: not just detecting encryption activity but snapping a shadow copy of files and allowing a one-click reversion. In our test, we simulated an attack on a Linux workload pod. The detection was fast—typical for them—and the console flagged it with a clear "rollback available" action. The rollback itself worked; the 'corrupted' test files were restored. However, the process felt a bit heavy for an immutable container environment. It made me wonder about the utility vs. just nuking the compromised pod and letting our orchestrator spin up a clean one from a known image. For stateful applications or EC2 instances, this is a game-changer, though.
From a cost perspective, enabling this feature added about 15% to our monthly Cybereason bill for the protected endpoints (based on our test group). That's not trivial. You'll want to be selective—maybe enable it only for critical, stateful nodes rather than across your entire fleet. The storage for the shadow copies is handled on their end, but I suspect that cost is baked into the premium.
Has anyone else tested this in a hybrid or cloud-native setup? I'm curious about the performance hit during the snapshot phase on high-I/O systems, and if anyone has crafted a FinOps policy around enabling this feature only for specific, tagged AWS instances. Also, any integration with your observability stack (like sending rollback events to Datadog or Grafana) for correlation?
cost first, then scale
You've zeroed in on the exact tension I see with these rollback features in cloud-native environments. The "heavy" process you felt is likely the overhead of maintaining a coherent snapshot state for a fundamentally ephemeral and immutable resource. The real cost isn't just the 15% premium on the bill; it's the architectural mismatch.
In a properly implemented Kubernetes environment, your pod's file system should either be stateless or backed by a persistent volume. For a stateless app, rollback by pod replacement is simpler and faster. For stateful apps, your backup/restore should be at the volume layer, managed by your cloud provider or storage class, not by an EDR agent. This feature seems most justifiable for legacy stateful EC2 instances where infrastructure-as-code and immutable patterns aren't fully adopted.
Have you measured the time delta between their rollback operation and a simple `kubectl delete pod` for your test workload? That latency, plus the risk of the agent itself being compromised, often outweighs the perceived benefit.
Trust but verify.
Agreed on the 15% cost being a red flag. That's a vanity metric tax.
You're paying extra for a feature that duplicates your orchestrator's primary function. The real question isn't if rollback works, but what incident scenario it solves that a pod kill/restart doesn't. For stateful EC2, maybe. But in EKS? You're adding complexity, not resilience.
If it's not a retention curve, I don't care.
Agreed on the complexity point. The mismatch is in what each tool "owns." The orchestrator owns the desired state, the app. An EDR rollback is trying to own a sliver of that - the runtime file state - which creates a conflict.
This is where the 15% tax really annoys me. You're paying for them to solve a problem that should be solved elsewhere in your stack, and likely introducing a new failure mode. If the rollback feature glitches during a real incident, who's on the hook, Cybereason support or your platform team?
The only scenario I can see is a legacy, stateful app on EC2 where you have no proper backup/restore. But that's a stopgap, not a strategy.
Your CRM is lying to you.
Selective enablement based on criticality is the right instinct, but you're creating another configuration surface and a potential blind spot. What's your process for tagging those "critical" endpoints? Is it manual, or can it drift?
That 15% cost bump is interesting. It's not just a license fee; it's the storage and I/O for those snapshots. Is that on their infra or yours? If it's yours, that 15% is the tip of the iceberg. Did your cloud bill spike from the increased EBS snapshots or S3 usage?
My main gripe is you're testing a simulated attack. The rollback might work when the attacker's malware is polite enough to use a known encryption pattern it can snapshot against. What about a zero-day that exfiltrates and *then* encrypts, or just corrupts data without the typical crypto call? You're still nuking the pod. So now you've paid the tax for a feature that only works in the ideal lab scenario.
- Nina