A continuous alternative to Cobalt’s pentest marketplace

Cobalt runs human testers on a project cadence and delivers a report. Greywatch runs AI agents continuously - a security engineer proves every finding before you see it.

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A 20-minute conversation with a founder. No pitch deck, no SDR.

Cobalt
90d
Point-in-time test, project cadence. A report lands; the product keeps shipping.
Greywatch
24/7
Always-on AI agents with a human proving every finding. Always current, because your surface never stops changing.
No strawman

What Cobalt is good at

Straight read. Cobalt built something real - this is not an attack on a stale position.

Human depth
Cobalt Core is a vetted network of human pentesters. The platform makes scheduling and retesting far easier than a legacy consultancy engagement.
Compliance fit
SOC 2, PCI, and similar requirements can be satisfied by a named human pentest from a recognized platform. Cobalt was built for this use case.
Enterprise footing
Mid-market and enterprise teams with a dedicated security function to manage an engagement and act on a report. Cobalt’s structure suits that context.
The gap

Where the model shows its age

The limitation is not the testers. It is the cadence and what the output actually is.

Point-in-time, not continuous
A pentest is true on the day it ran. 90 days later describes a product that no longer exists. Cobalt’s shift toward an autonomous pentest acknowledges this directly.
A report, not proof you can act on
The output is a list. Greywatch proves it: every finding ships with the exact request that worked, the data it exposed, and reproduction steps your engineers can replay. A report of maybes is a different product.
Marketplace variance
Your result depends on which testers you drew that cycle. Agents that sharpen with every engagement gives you a consistent, always-on adversary instead.
How it works

1 framework. 3 motions.

Every engagement runs the same loop. Nothing leaves without human validation.

01
Continuous
AI agents continuously test your live product at machine speed, on the same clock as your deploys. Not a project booked a quarter out.
02
Reviewed
Every candidate is filtered by a security engineer first. A few real, prioritized issues - not 1,000 low-signal tickets.
Reproduction, as delivered
$ curl -H "Auth: <user-a>" /api/records/8815
← 200 OK · returns record 8815
user-a is not the record owner. Count recorded, 1 sample redacted, nothing extracted.
03
Reproducible
The exact request that worked, the data exposed, step-by-step reproduction, and a recommended fix. The sharpest line between us and a report of maybes.

Learn more: how it works →

Right fit

Who each product is built for

Cobalt
Mid-market and enterprise with a compliance-driven pentest requirement and a security function to manage it. Best for a named human pentest against a specific audit line.
Greywatch
Series A-C healthtech, fintech, and B2B SaaS teams shipping fast, holding real customer data, without a dedicated security function. Continuous coverage, proof-first output.
From our customers

What it looks like from the other side.

“

We were focussing on our usual product roadmap and didn’t think beyond our quarterly VAPT reports. Greywatch proactively found exploitable vulnerabilities our usual vendor never caught, and now we run their continuous security platform on all our assets. Highly recommend working with them!

Adarsh Tadimari
Adarsh Tadimari
Co-founder & CTO, Plotline
Common questions

Questions about switching from Cobalt

Is Greywatch a Cobalt alternative?
Yes - if what you want is continuous, proven, exploitable findings rather than a scheduled human pentest report. Greywatch runs always-on AI agents with human validation, built for data-sensitive startups.
What is the difference between Cobalt and Greywatch?
Cobalt: human pentester marketplace, project cadence, compliance-oriented report - mid-market/enterprise. Greywatch: always-on AI agents with human validation, a few real reproducible findings plus a fix, built for Series A-C startups.
Does Greywatch help with SOC 2 or HIPAA?
Greywatch proves what is exploitable in production - a stronger signal than a point-in-time report. Whether it satisfies a specific audit line item depends on your auditor - talk to us.
Do you fix the vulnerabilities you find?
No. Every finding comes with a recommended fix written by the engineer who exploited it, and your team implements it. We never change your code - our job is to show you what is actually exploitable.
Still evaluating

Compare Greywatch with

Most teams are weighing 2 or 3 of these at once. Here is how the other models stack up.

Greywatch vs. Astra Security
Astra flags what might be wrong across a broad surface. We show you the exact request that worked, the data it exposed, and the fix that closes it.
Read the comparison →
Greywatch vs. security scanners
Scanners find everything and understand nothing. A thousand findings with no prioritization is alert fatigue, not coverage.
Read the comparison →
Greywatch vs. AI pentest tools
Autonomous agents move at machine speed with no judgment. They cannot tell which finding is existential for your business and which is noise.
Read the comparison →

See all 4 side by side: compare Greywatch →

Get in touch

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