What services does OtterSec offer?

According to its public information, OtterSec offers: Audit and Penetration testing.

Which blockchains does OtterSec work with?

OtterSec works with Solana, Ethereum, Sui, Aptos, Cosmos, and NEAR.

Which smart contract languages does OtterSec use?

OtterSec works with Rust, Move, and Solidity.

Is OtterSec verified on smart-contract.com?

Not yet. This listing was compiled from public information and OtterSec has not claimed it or gone through the vetting process of smart-contract.com.

How can I get a quote from OtterSec?

Describe your project once on smart-contract.com: you receive comparable quotes from vendors that match it, in the same format. Development and audit are always entrusted to two independent companies.

Vendor

OtterSec

Blockchain security firm auditing layer 1s, wallets, DeFi and bridges, with pentesting and fuzzing

Public information

About

OtterSec is a blockchain security firm operated by Otter Audits LLC. It audits layer 1 foundations, wallets, DeFi protocols, bridges and the infrastructure that connects them, and its services page lists ecosystems including Solana, EVM, Sui, Aptos, Cosmos and NEAR, along with backends, compilers and zero-knowledge systems. Beyond audits, it offers white-box and black-box penetration testing of the Web2 attack surface of Web3 applications, formal verification with its own verification framework for Solana, fuzzing work that includes differential compiler fuzzers for Vyper, transactional fuzzers for Solana validators and Move VM bytecode fuzzers, and incident response. Its audit process runs from an initial discussion and an NDA through repository review, quotation and kickoff to report delivery, with findings shared as they emerge. OtterSec maintains the Anchor framework for Solana and open-source decompiler tooling for Solana programs, and it publishes an open-source capture-the-flag platform. Public audit reports are listed on its website with date, chain and findings by severity, including reports from 2026.

At a glance

Audits layer 1s, wallets, DeFi protocols and bridges
Offers white-box and black-box penetration testing
Maintains the Anchor framework for Solana
Builds fuzzers for Vyper, Solana validators and the Move VM
Lists public audit reports with chain and severity on its website

Services: Audit
Penetration testing
Blockchains: Solana
Ethereum
Sui
Aptos
Cosmos
NEAR
Languages: Rust, Move, Solidity
Website: osec.io(opens in a new tab)
Public audit reports: osec.io(opens in a new tab)

OtterSec: frequently asked questions

What services does OtterSec offer?: According to its public information, OtterSec offers: Audit and Penetration testing.
Which blockchains does OtterSec work with?: OtterSec works with Solana, Ethereum, Sui, Aptos, Cosmos, and NEAR.
Which smart contract languages does OtterSec use?: OtterSec works with Rust, Move, and Solidity.
Is OtterSec verified on smart-contract.com?: Not yet. This listing was compiled from public information and OtterSec has not claimed it or gone through the vetting process of smart-contract.com.
How can I get a quote from OtterSec?: Describe your project once on smart-contract.com: you receive comparable quotes from vendors that match it, in the same format. Development and audit are always entrusted to two independent companies.

Where this information comes from

This listing was compiled from the public pages below and last reviewed on September 24, 2026. The company has not claimed it yet, is not a partner of smart-contract.com and has not been vetted.

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