Check Point CloudGuard vs Tenable Cloud Security - which has better agentless scanning?

Great questions. You're right that the marketing makes them sound similar, but the depth is fundamentally different.

> how current is the data

This is where it gets tricky in a big AWS setup. The scanning speed depends entirely on what permissions you've granted. Check Point needs those deeper IAM roles for workload CVEs, which often means slower, throttled API calls. So while Tenable might finish a config scan in an hour, Check Point could be chugging for half a day on the same account. You're trading data freshness for data depth, and the lag can be significant.

The multi-account complexity follows that same trade-off. Tenable.cs is generally simpler to roll out because it's not trying to peer into the VMs. Check Point's setup is more involved, requiring you to configure that guest introspection trust across accounts. If your team is lean, that's a real operational cost.

That's the exact trade-off you're facing. Everyone's covered the depth vs speed angle well.

But for your multi-account question, the complexity isn't just about IAM roles. It's about managing that complexity when you inevitably have exceptions. Check Point's deeper access means you'll need a process for handling accounts with custom images or unsupported services that break the guest introspection. With Tenable.cs, you're dealing with a simpler, more uniform setup, but you're giving up that OS-level data entirely.

So it really comes down to what kind of problems you're willing to manage in production.

You're right to be skeptical about whether agentless can replace agent-based scanning. The key distinction is that Check Point's method for workload CVEs isn't truly scanning the workload itself. It's querying the cloud provider's guest introspection API, which is just another data feed. If that API is unavailable or doesn't support your image, you have no visibility.

So the answer to your depth question is that Tenable.cs provides consistent agentless scanning for configuration and inventory. Check Point provides that plus a conditional vulnerability feed, but you must architect for its dependencies and blind spots. Your choice hinges on whether you can standardize on supported images and accept the API lag for that additional data layer.

You're right about the time difference being tied to the data depth, but framing it as "a few hours" versus "maybe an hour" can be misleading at scale. The real bottleneck isn't the scan itself, but the API rate limits imposed by AWS when Check Point pulls guest introspection data. In an org with a few hundred instances, those SSM API calls can push a full scan into an 8-10 hour window, which fundamentally changes the operational model from daily to weekly.

The streamlined CloudFormation template from Tenable is a real advantage, but it's a symptom of the simpler permissions model. Check Point's extra IAM steps are a direct requirement for the deeper data access. The trade-off is between a complex, one-time setup for ongoing vulnerability data, or a simple setup for a permanently limited scope. Neither is wrong, but the setup complexity is a permanent feature, not just an initial hurdle.

You're asking about the guest introspection piece, and that's the heart of it. When people talk about Check Point's "agentless" workload scanning, they're specifically referring to its ability to query cloud APIs like AWS SSM for OS-level data from managed instances. This gives you CVE findings without a traditional agent, but it's not scanning the disk. It's accessing a secondary data feed that the cloud provider assembles, which introduces a dependency and a lag.

So if your image isn't supported by that underlying cloud service, or if the instance isn't in a managed state, that feed is empty. Tenable.cs, by design, doesn't try to access that feed at all. Its agentless approach is strictly about the cloud control plane - configurations, permissions, and asset inventory. That's why the setup is simpler and scans can be quicker; you're not waiting for or managing that second layer of API calls.

Your question about speed and data freshness ties directly to this architectural choice. The "real-time" claim is less important than the consistency of the scan cycle you can actually achieve. With Check Point's deeper approach, full scan duration is often gated by those guest API limits, which can push it beyond a practical daily window in larger environments. Tenable's scans are typically faster and more predictable because they're operating at a single, higher layer. You're choosing between a broader, shallower scan you can run often, or a deeper scan that may force you into a less frequent cadence.

You're asking the right questions, and the thread has already exposed the key lie: neither is truly "agentless" for workload vulnerabilities. Check Point's method isn't scanning, it's consuming the cloud provider's own guest introspection feed. If you use a custom AMI or your instance isn't managed by SSM, you get zero data. You aren't replacing an agent, you're outsourcing it to AWS and accepting their limitations.

That directly answers your setup complexity question. Check Point's multi-account deployment requires you to standardize and configure for that specific dependency across every account, including IAM for SSM and ensuring all workloads are in a supported, managed state. Tenable.cs requires no such guest OS considerations because it doesn't touch that layer at all. Its complexity is purely in the control plane IAM roles, which is simpler and more predictable.

So your choice is binary: do you need OS-level CVE data badly enough to architect your entire cloud estate around the constraints of AWS Systems Manager? If not, Tenable.cs gives you consistent, faster control plane scans. If yes, be prepared for the API lag and blind spots everyone mentioned, and never call it a replacement for true deep agent-based scanning.

Exactly, and that gap is where Check Point's "agentless" label starts to feel a bit misleading. In our environment, the consistency you asked about just wasn't there for our legacy applications.

We had a whole set of older, custom AMIs built before SSM was standard. Check Point showed a blank slate for those workloads - no CVEs at all because there was no guest introspection feed to pull from. Conversely, Tenable would at least flag the insecure security group rules those instances were using, which was still actionable.

So the coverage gap is real. You're not just trading depth for speed, you're accepting a potentially huge visibility hole if your estate isn't uniformly modernized.