Discover all of your API backdoors.

Every single one.

A hidden killer: Zombie APIs scale non-linearly as your codebase ages.

Number of Zombie APIs





3 yrs

7 yrs

10 yrs

13 yrs+


Active APIs

Zombie APIs

Case study



word for it.

Read how Domino's Pizza used p0 to detect exploitable Zombie APIs (some over 9 years old!) in their codebase.

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As seen on



care about

your Zombie API attack surface?


Discover 100% of your API attack surface

You can't protect
what you don't know.

Illuminate the shadows of your digital infrastructure with p0. By unveiling and closely monitoring dormant APIs, we ensure that hidden entry points are fortified, drastically reducing the potential for security breaches and protecting your network's integrity.


control sensitive user data

Block PII leaks and exploits.

Protect your users' privacy with p0's unwavering vigilance. Our sophisticated API monitoring system relentlessly hunts down and blocks avenues of exploitation, keeping personal data secure and maintaining your users' trust.


Mitigate Compliance Risk

Stay ahead of regulations.

Maintain stringent compliance and avert regulatory penalties with p0. Our system is your sentinel against the compliance risks of forgotten APIs, ensuring that every part of your API ecosystem is in line with the latest data protection regulations.


Boost Code Health

Control API sprawl and
streamline your codebase.

Elevate your operational efficiency with p0. Our solution polishes your codebase, rooting out and retiring zombie APIs to enhance system performance, reduce maintenance overhead, and accelerate deployment cycles for peak efficiency.

White paper

Zombie APIs: A threat to legacy software

Uncover the hidden dangers in your code with p0's insights. This whitepaper unveils how dormant APIs, unnoticed for over a decade, can imperil your data security and how vigilance with p0 safeguards your systems.

Published May 2024


every backdoor.


Unlike agent-led network traffic scans which miss what's lurking beneath, p0 dives into the codebase and log files, ensuring every API is accounted for and audited.

Further, p0 explores your existing logs provider, your version control history as well as your API accessibility to give you noiseless and actionable results.

Multiple internal tools? No problem.
We integrate with tools across the board.

Version control system

Logs provider



Frequently asked questions:

What are shadow APIs or zombie APIs?
What is an API attack surface?
Why are zombie APIs dangerous?
How are zombie APIs created?
How does p0 work?
Does p0 use artificial intelligence?
Can p0 find malware in code?
How can I find zombie APIs?
What can happen if I leave a zombie API available?
Can p0 help with compliance requirements?
What repositories can p0 scan? [Need answer]
Will p0 integrate with my development environment? [Need answer]
Does p0 run in the cloud? [Need answer]
Is p0 easy to configure and set up? [Need answer]
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p0 is built by people who have built products at:

The API visibility tool
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