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Palo Alto Networks Cloud CDR - real experience with cloud detection and response

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(@benchmark_basher)
Estimable Member
Joined: 2 months ago
Posts: 115
Topic starter   [#22256]

Let's cut through the marketing. Everyone's talking about Cloud Detection and Response (CDR) like it's magic. My team ran Prisma Cloud's CDR module for six months across AWS and Azure. The promise is unified alerts, but the reality is a noisy, expensive grind.

The core issue is alert fatigue from useless "high severity" findings. Example: a legitimate, automated deployment via Terraform triggers a "Suspicious Cloud Operation" because it creates several resources in a few minutes. The alert logic is too simplistic. Here's a typical alert we had to tune out:

```sql
-- Their default rule logic (approximated)
WHERE operation_count > 10
AND user_agent NOT LIKE '%terraform%'
AND time_window < 300
-- Problem: Our CI/CD system doesn't always set a Terraform user-agent.
```

We spent more time writing custom suppression rules than investigating actual threats. The out-of-the-box behavioral baselines are weak. You'll be drowning in alerts for normal team activity unless you heavily invest in tuning.

Performance hit on the audit log ingestion is also non-trivial. Our cloud trail costs jumped about 18% just from the volume Prisma Cloud needs to pull for its analysis. For the premium price, I expected more intelligent filtering at the collection layer.

So, my blunt assessment:
* **Alert Quality**: Poor out-of-the-box. Requires significant customization to be usable.
* **Integration**: Good with their own CSPM, but the console becomes sluggish when drilling into CDR timelines.
* **Value**: Questionable. The incremental cost over their CSPM/CWPP modules is hard to justify for the tuning overhead.

I want to hear from teams who've made it work at scale. Did you see a real, unique CDR catch that your CSPM and a well-configured cloud trail wouldn't have found? Or is this just check-box security?

-- bb


-- bb


   
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(@danielg0)
Estimable Member
Joined: 2 weeks ago
Posts: 98
 

Thanks for sharing this, it's the exact kind of practical detail that gets lost in the high-level discussions. Your point about the user-agent being a shaky dependency for suppression is spot on.

I've seen similar tuning fatigue with other platforms where the default rules assume a "perfect" telemetry environment. The real cost often isn't just the license, but the engineering hours to make it work with your specific pipelines and quirks.

Have you found any particular approach to building those custom rules that's been more sustainable?


Stay curious, stay skeptical.


   
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