INVARIANT TESTING IN THE CLOUD
Run invariant testing with Echidna, Medusa and Foundry
Schedule a demoHelping these projects deploy safely
TVL Protected
$1BLN+
Aggregate TVL of our Customers
$100MLN+
TVL Protected with Live Monitoring
1k+
Cloud Fuzzing Runs done with Recon Pro
Benefits
THE MISSING PIECE
Invariant Testing is often the missing piece to reduce the number of bugs protocols go to audit with
NEVER STUCK IN QUEUE
Recon Pro allows an unlimited number of parallel runs, we cap the total hours of usage, not the number of concurrent runs
ONE INTERFACE, ALL OF THE TOOLS
The Recon panel abstracts away the complexity of handling infra, shareable runs, reusable corpus, rpc forks, enable all of these in one click
Halmos and Kontrol
Formally Verify your Fuzz Tests, in one click
Experimental
LIVE MONITORING
Convert your Invariant Testing Properties into tests that are checked against each block
Experimental
GOVERNANCE FUZZING
Trigger an invariant testing suite against all of your onChain Proposals.
Testimonials
Our services are tailored to our customers
We worked with the phenomenal @getreconxyz team to get invariant testing coverage for the @centrifuge ERC-7540 implementation, leveraging their Recon Pro platform. Looking forward to seeing where @getreconxyz goes next, they have ambitious plans to take invariant testing to the next level!
Centrifuge
Jeroen - CTO
We first met Alex during some excellent security discussions re: Liquity v1. The breadth and depth of his audit of our v2 exceeded expectations - particularly impressive for a solo effort. He uncovered several technical, arithmetic and economic issues and discussed them with us in detail. I’d highly recommend his manual reviews for any DeFi team that takes their security seriously.
Liquity
Rick - Cofounder
Recon has allowed us to speed up the development of invariant tests immensely. We are able to create and execute test suites in the cloud effortlessly with virtually no boilerplate code. I highly recommend using Recon to automate your fuzzing setup.
Badger DAO
James - Lead Dev
The recon team is continuously innovating to make invariant testing vastly more accessible to projects, which makes a meaningful difference in security outcomes. They bring their broad expertise in and passion for web3 security to any engagement above and beyond the specified scope.
Corn
Dapp - Cofounder
Engaging with Alex&Lourens showed great proactiveness to answer deep-technical Qs along the process and help to discuss together items that require deeper drilling on invariants, really valuable not only their ability to answer Qs, but educating you on the process and empowering your team for better understanding of invariants on your architecture!
Onchainification
Petrovska - Cofounder
Alex has an incredible eye for detail, leaving no stone unturned during our audit. His review helped us gain confidence in our codebase before going to a competitive audit. I would highly recommend Alex’s security services to anyone building smart contract systems.
Solidity Labs
Elliot - Founder
We worked together with Alex to review a Safe module for our DAO multi-sig. We really valued his proactiveness and quick response times so that we could ship in a timely manner. 🚀
Balancer DAO
Xeonus - Balancer Maxis
How does it work
Installation is faster than finding your hardware wallet
- Install the Recon App
- Run a job by just pasting the repository URL
- Save and re-use configs as Recipes
- Run jobs on PR, commit, or at specific time of the day
Recon PRO Workflows
Trophies
Recon was used to find these bugs
TEAM
SERVICES
Boutique Audits, we can write code and break invariants, whether you want us to code with you or review your code manually
We can support your team at all stages of development
Early Stage:
Define key invariants, scaffold and maintain invariant testers
Add invariants as the project grows
Pre Audit Stage:
Reach 100% Coverage, handout to your Auditors a full set of test repros to produce meaningful states or broken properties
Solo Review Stage:
Recon is made by highly respected SRs that can help you with Manual Review
Audit Stage:
We can support you during audits, by adding new properties flagged by your reviewers and by reproducing bugs in invariant tests as a means to ensure they are not introduced later
Our cloud runners ensure you can quickly queue and test fixes, no more waiting for your engineer to come back from the weekend
Our offers:
- Invariant Bootstrapping > A one off engagements to make massive progress, ranging from 1 to 3 weeks, typically performed by Alex
- Recon Legendary > Ongoing test maintenance from a experienced fuzzing engineer, for projects that want to quickly update their tests, includes unlimited cloud runs
- Recon Pro > Cloud Fuzzing as a service, a versatile and easy way to run invariant testing in the cloud
Invariant testing starters
Eigenlayer Fuzzing
A plug and play suite to test meaningful Eigenlayer States, a must for every Eigenlayer Integrator
Renzo Fuzzing
A complete invariant suite for the Renzo Protocol, able to replicate multiple exploits found in subsequent audits
Call Test Undo
A simple contract meant to turn state changing function calls into invariant tests that do not pollute the story
ERC7540 Reusable Properties
Simple to Reuse, high level properties for ERC7540 Vaults, Built in Collaboration with Centrifuge
Recon builder
FREE
For Open Source Projects
90
Repos built
200
Hours saved
It's never been easier
2 click scaffolding a State of the Art Medusa and Echidna Invariant Testing Setup
use the right tools for the job
Use foundry to develop and debug, use medusa and echidna for invariant testing
Only as opinionated as necessary
Compatible with any foundry project. Zero configuration necessary
check how it works
First Day At Invariant School
Featured in Week in Ethereum, a simple introduction to Invariant Testing
Read >Reusable Properties for ERC7540 Vaults
How to implement properties developer by the Recon + Centrifuge teams for ERC7540 vaults
Read >Lessons Learned from Fuzzing Centrifuge Protocol part 2
Separating signal from noise in broken properties
Read >Finding Real Vulnerabilities with the Renzo-Fuzzing repo
Using the renzo-fuzzing repo to reproduce vulnerabilities from the Renzo audit report from code4rena
Read >Lessons From The Fuzzing Trenches
Lessons learned from building a fuzzing suite for Renzo Protocol
Read >Integrating EigenLayer Into Your Test Suite
Deploy the entire EigenLayer system + simulate slashing events in your test suite
Read >