This article will evaluate top competitors of PixelPlex, in particular blockchain security and audit firms. Audit frameworks and processes differ across organizations. Knowing about blockchains covered in an audit and the types of security risks and vulnerabilities covered are important.
Understanding the type of information and recommendations in the audit report and remediation processes will also be useful. The focus will also be on what type of smart contracts and use cases the competitor has covered.
Key Points
| PixelPlex Alternative | Explanation |
|---|---|
| CertiK | Provides automated and manual smart contract audits with extensive blockchain security expertise. |
| Trail of Bits | Delivers rigorous smart contract audits, vulnerability research, and advanced security assessments. |
| OpenZeppelin | Offers trusted smart contract security audits alongside widely adopted development frameworks. |
| Hacken | Provides blockchain security audits, penetration testing, and comprehensive smart contract assessments. |
| Quantstamp | Specializes in automated and manual smart contract audits for blockchain projects. |
| Halborn | Delivers blockchain security audits, penetration testing, and smart contract vulnerability analysis. |
| ChainSecurity | Provides specialized smart contract audits, formal verification, and blockchain security consulting. |
| SlowMist | Offers blockchain security audits, smart contract reviews, and threat intelligence services. |
| PeckShield | Provides blockchain security audits, smart contract analysis, and cryptocurrency threat monitoring. |
| ConsenSys Diligence | Delivers smart contract audits, security tools, and Ethereum-focused vulnerability assessments. |
| Certora | Uses formal verification technology to analyze smart contract behavior and security. |
| Runtime Verification | Provides formal verification and security analysis for blockchain protocols and smart contracts. |
| Nethermind | Offers blockchain development, smart contract audits, and security engineering services globally. |
| Sigma Prime | Specializes in blockchain security audits, protocol reviews, and smart contract assessments. |
| Code4rena | Uses competitive security contests to identify vulnerabilities across smart contract codebases. |
15 Top PixelPlex Alternatives for Contract Audits
1. CertiK
CertiK uses automated tools and formal verification as part of its smart contract audit process, in addition to its manual processes. It reviews smart contracts on various blockchain platforms and ecosystems, including Ethereum, BNB Chain, and Polygon.
Smart contracts go through penetration tests to assess their logic and integrity. Smart contracts are reviewed for vulnerabilities. Formal verification comes at an additional cost. CertiK documents and provides remediation recommendations for issues it discovers.
Smart contracts undergo security reviews to ensure issues are not still present. Formal verification is also offered for automation and decentralized finance applications. Audit prices are project-based and therefore vary, and potential clients request a quote.
CertiK Pros & Cons
| Pros | Cons |
|---|---|
| Combines manual review with automated security analysis. | Large-scale services may be more than small projects need. |
| Covers many blockchain ecosystems and Web3 applications. | Audit scope and pricing can vary significantly by project. |
| Provides detailed vulnerability findings and remediation guidance. | Automated tools cannot replace complete human review. |
| Offers additional security monitoring capabilities. | Complex projects may require longer audit engagements. |
2. Trail of Bits
In addition to automated review processes and manual review, Trail of Bits assesses smart contracts by considering a variety of attacks and states, and by utilizing tools such as Echidna and Medusa.
Trail of Bits provides detailed audit reports that include smart contract function and logic analysis. Automated tools do not capture all errors and issues present in smart contracts. Trail of Bits provides a range of services focused on smart contract and software review. Like audits, the prices for Trail of Bits’ other services vary based on the project.
Trail of Bits Pros & Cons
| Pros | Cons |
|---|---|
| Strong focus on deep technical security research. | Highly technical approach may suit experienced teams better. |
| Uses fuzzing and advanced security-analysis techniques. | Engagements can require substantial preparation from developers. |
| Experienced with complex blockchain and software systems. | Pricing is generally project-specific rather than fixed. |
| Provides detailed technical findings and recommendations. | Smaller contracts may not need its full security methodology. |
3. OpenZeppelin
OpenZeppelin has its own approach to audit smart contracts. Architectural review coupled with line-by-line review, in conjunction with automated tools and testing, forms the backbone of its auditing process. Its security service covers development in Solidity, Cairo, Rust and Go.
It also covers numerous protocols and applications across various blockchains. The audit team identifies vulnerabilities and architecture flaws, as well as risk of upgrade and implementation flaws. The audit team provides report, as well as suggested remediation.
It has deep expertise in financial and business logic implementation in smart contracts. It also has deep expertise in governance, stablecoins, and advanced smart contract infrastructure. Quote-based pricing is used to determine its cost.
OpenZeppelin Pros & Cons
| Pros | Cons |
|---|---|
| Strong Solidity and EVM smart contract expertise. | Primarily suited to technically serious Web3 projects. |
| Combines manual review with automated testing techniques. | High-complexity audits can require significant time. |
| Strong knowledge of DeFi and upgradeable contracts. | Pricing is generally customized to engagement requirements. |
| Offers remediation and fix-review capabilities. | Audit availability may depend on project scope and scheduling. |
4. Hacken
Hacken employs similar process for auditing smart contracts as other firms in this space. However, its process incorporates greater level of automation, manual review, fuzzing, invariant tests and exploit identification.
It reviews financial and business logic, as well as access control and state transitions. Hacken provides prioritized lists of vulnerabilities and estimates the severity of flaws. The audit firm provides examples of attacks and suggests improvements.
It also validatesfixes to the smart contracts. Hacken provides an estimate of cost and time to complete an audit after reviewing client’s request and the level of detail provided by client.
Hacken Pros & Cons
| Pros | Cons |
|---|---|
| Combines manual auditing with automated security testing. | Broad security services can make comparisons less straightforward. |
| Supports multiple blockchain ecosystems. | Pricing depends on individual project requirements. |
| Covers smart contract and broader blockchain security. | Complex protocols may require extended review periods. |
| Provides remediation recommendations and security findings. | Scope must be clearly defined before comparing audit proposals. |
5. Quantstamp
Quantstamp provides blockchain-specific smart contract security services. Their main competitor is Hacking Distributed (HacD). However, Quantstamp has the added benefit of providing auditing services for platforms beyond Ethereum.
Their primary point of differentiation from HacD is that they position their audit process as flexible to suit the needs of the customer.
The client is required to provide documentation on the project and code in order for Quantstamp to generate a report and price the audit. They claim that the length and cost of the audit are dictated by the complexity of the project.
Quantstamp Pros & Cons
| Pros | Cons |
|---|---|
| Experience across multiple blockchain ecosystems. | Audit scope varies according to project requirements. |
| Combines automated analysis with professional security review. | Public standardized pricing is limited. |
| Suitable for DeFi and blockchain protocols. | Complex codebases can require longer engagements. |
| Provides structured audit findings and recommendations. | Teams need to provide sufficient documentation and code context. |
6. Halborn
Halborn relies on a combination of automated and manual testing for their smart contract auditing processes. Other aspects of their auditing procedure include Static Analysis and Fork testing. Their areas of focus in contract audits include Economics, Access Controls, and Trust Assumptions.
Other areas of focus include Arithmetic, Oracle, and Implementation concerns. For each of their findings, Halborn provides suggested steps for remediation.
Halborn has published sample case studies of contracts audits that illustrate the range of engagements that they can perform from short, simple reviews to extensive audits.
Halborn Pros & Cons
| Pros | Cons |
|---|---|
| Combines manual review with automated security testing. | Comprehensive testing can increase engagement time. |
| Supports several blockchain environments. | Pricing varies according to scope and complexity. |
| Provides penetration-testing and blockchain security expertise. | Broad security services may be unnecessary for simple contracts. |
| Offers remediation guidance and follow-up testing. | Large protocols require more detailed preparation and documentation. |
7. ChainSecurity
ChainSecurity performs security audits on smart contracts and blockchain projects. They have public audit experience with various projects like stablecoins, bridges, derivatives, and DEXs.
Compared to other audit firms, ChainSecurity says they focus on the behavior and business logic of the contracts and the security of the overall protocol instead of automating contract audits.
Traditional audits focus on logical errors and bugs. They publish their audit reports. ChainSecurity focuses on advanced DeFi and infrastructure projects and charges clients based on the project’s complexity.
ChainSecurity Pros & Cons
| Pros | Cons |
|---|---|
| Strong focus on complex DeFi protocol security. | May be more specialized than small projects require. |
| Experienced with sophisticated blockchain infrastructure. | Project complexity can significantly affect timelines. |
| Provides detailed technical security analysis. | Public fixed pricing is generally unavailable. |
| Relevant for protocols requiring deep logic review. | Smaller contracts may not require the same depth of analysis. |
8. SlowMist
SlowMist audits blockchain projects and smart contracts across multiple blockchains like Solana, EOS, Aptos, Fabric, Klaytn, and Ethereum. They perform audit work to uncover medium and high risk problems in blockchain applications and smart contracts.
SlowMist says they perform security reviews of blockchain applications and smart contracts and issue audit reports. Audit reports are searchable on SlowMist’s website.
SlowMist says they perform security reviews and threat assessment of blockchain applications beyond smart contract audits. SlowMist does not publicly disclose their rates or say they perform security reviews within a specified time frame.
SlowMist Pros & Cons
| Pros | Cons |
|---|---|
| Established focus on blockchain security. | Public pricing information is limited. |
| Provides smart contract security auditing. | Audit scope differs between blockchain projects. |
| Combines contract security with broader threat intelligence. | International project teams may need to clarify engagement processes. |
| Has experience across multiple blockchain ecosystems. | Complex protocols can require substantial audit time. |
9. PeckShield
PeckShield is a blockchain security and analytics company. Services offered include smart contract analysis and overall ecosystem security. Contract audits evaluate code review, smart contract security, and potential risk.
Smart contracts are reviewed for the presence of vulnerabilities. Security research reports evaluate the scope of contracts supported by the company. Typical vulnerabilities assessed during contract reviews include reentrancy, oracle issues, and logic and access control issues.
Implementation flaws are assessed during contract reviews. Clients should evaluate the suitability of the company based upon the contracts supported, and the publications of the company.
PeckShield Pros & Cons
| Pros | Cons |
|---|---|
| Strong blockchain security and threat-analysis background. | Public audit pricing is not generally standardized. |
| Provides smart contract security assessment capabilities. | Service scope varies by individual engagement. |
| Experience with DeFi and broader Web3 security. | Complex projects require detailed technical scoping. |
| Security research can provide broader ecosystem context. | Teams should confirm exact audit deliverables before engagement. |
10. ConsenSys Diligence
ConsenSys Diligence is a part of ConsenSys and focuses on audit and tooling services related to security of Ethereum smart contracts. The team reviews the code to assess implementation correctness, and if the code contains smart contract vulnerabilities.
The code is also reviewed to assess if it contains vulnerabilities that could result in contract failures due to edge cases. ConsenSys’s tooling includes MythX, which is an automated smart contract vulnerability analysis tool.
The contract review process and outcomes are documented in audit reports. Consulting services are offered to assess the security of EVM- and Ethereum-based software. Audit reports provide recommendations to clients based upon the outcome of the review.
ConsenSys Diligence Pros & Cons
| Pros | Cons |
|---|---|
| Strong Ethereum and EVM security expertise. | Less suitable when projects need non-EVM specialization. |
| Uses specialized smart contract security tooling. | Tool-based analysis still requires expert interpretation. |
| Experienced with DeFi and Ethereum applications. | Pricing is generally engagement-specific. |
| Provides detailed security-focused audit work. | Complex audits can require significant development preparation. |
11. Certora
Certora uses formal verification to validate properties of smart contracts and does not solely depend on code auditing. Its Prover validates contract logic and contract execution by verifying contract states and execution paths.
Certora limits its focus on critical and security logic of smart contracts. From verification, a smart contract developer may find that his/her smart contract contains a logic bug, but may also find that the smart contract logic does not implement the required business logic and, therefore, a remediation is required.
Mathematical verification of smart contracts is Certora’s expertise. Given the business requirement and the quality and completeness of the formal specification, the result of formal verification is trust and confidence in the smart contract.
Certora Pros & Cons
| Pros | Cons |
|---|---|
| Strong formal-verification capabilities. | Requires clearly defined security properties and specifications. |
| Can verify important contract behavior mathematically. | Formal verification differs from a conventional full audit. |
| Useful for critical DeFi protocol logic. | Results depend heavily on specification quality. |
| Helps identify violations of defined properties. | May require specialized expertise from the development team. |
12. Runtime Verification
Runtime Verification also uses formal methods and verification in its software and blockchain business. For smart contracts, it uses formal methods to validate smart contract behavior and other security properties.
The key distinction is that in the former, the assurance is provided by means of formal methods and in the latter, by means of conventional source code analysis. Thus, the result of formal verification gives the project team the required level of confidence and trust that the smart contract meets the desired business properties.
Runtime Verification Pros & Cons
| Pros | Cons |
|---|---|
| Strong expertise in formal verification. | Formal methods can require significant technical expertise. |
| Focuses on mathematically defined contract behavior. | Not a direct replacement for every conventional audit. |
| Suitable for critical protocol correctness requirements. | Verification scope depends on defined properties. |
| Useful for complex blockchain systems. | Additional remediation may require repeated verification. |
13. Nethermind
Nethermind specializes in smart contract audits for various blockchain platforms and the Web3 layer. Their audit process, which includes review and testing by security experts and engineers, identifies potential risks in a client’s implementation.
Audits include examples of vulnerabilities and offer suggestions to help clients understand the risks. Nethermind is unique among auditing firms in that they provide preliminary reports. Reports are published only for audits of projects implemented in Solidity and Rust.
Available reports document audits for projects in the DeFi, Infrastructure and wallets sectors, as well as reviews of risky asset (RWA) projects. The cost of Nethermind’s auditing services is dependent upon the complexity of the project being audited.
Nethermind Pros & Cons
| Pros | Cons |
|---|---|
| Strong Ethereum and blockchain engineering expertise. | Public standardized pricing is limited. |
| Combines security auditing with technical blockchain knowledge. | Complex projects can require longer engagements. |
| Suitable for DeFi and infrastructure-focused projects. | Scope must be established clearly before comparing proposals. |
| Provides technical recommendations for identified issues. | Smaller projects may not need broad engineering expertise. |
14. Sigma Prime
Sigma Prime should be considered for blockchain and smart contract projects that require in-depth assessment and engineering at the protocol layer. Areas of interest in assessing Sigma Prime should include: their evaluation and testing processes, the blockchain platforms supported, and the reasoning and logic in assessing more complicated protocols.
Security review focus areas include implementation and authorization flaws, illogical or missing business logic, and contract-specific attacks. Reviews should be detailed enough to include the scope of the issue, provide examples, prioritize the issues, and provide solutions.
The solutions should be reviewed to ensure understanding prior to closing the engagement. Specialization in blockchain security and engineering is an asset for more complicated review engagements. Individualized estimates and timeframes are the norm.
Sigma Prime Pros & Cons
| Pros | Cons |
|---|---|
| Strong blockchain protocol security expertise. | Specialized services may exceed simple audit requirements. |
| Suitable for technically complex blockchain systems. | Pricing and timelines are generally project-specific. |
| Focuses on detailed technical security analysis. | Complex protocol audits can require substantial time. |
| Relevant for protocol-level security assessments. | Teams should confirm exact smart contract coverage before engagement. |
15. Code4rena
Code4rena uses an alternative model from the more traditional audit firms. Rather than employing their own security consultants, Code4rena runs competitions to identity flaws in contract code. To conduct an audit, a sponsor sets the prize amount and duration, defines the scope of the audit, and provides the code to be inspected.
Researchers are not bound by the scope of the audit and are free to inspect the code in any manner they choose. As such, audit competitions may yield the same flaw multiple times and in multiple ways. Code4rena makes public prior and ongoing audit competitions.
Audit findings are prioritized and solutions are found. The cost and time period for completing an audit is contingent upon the prize amount and duration set by the sponsor.
Code4rena Pros & Cons
| Pros | Cons |
|---|---|
| Uses a competitive crowdsourced audit model. | Results depend on researcher participation and competition scope. |
| Provides multiple independent security perspectives. | Findings require judging and triage after submission. |
| Competition scopes and prize pools can be publicly visible. | Not structured exactly like a traditional audit firm. |
| Can uncover issues through diverse researcher approaches. | Remediation and verification remain the project’s responsibility. |
Conclusion
Conclusion Choosing among the Top PixelPlex Alternatives for Contract Audits depends on your project’s blockchain, security requirements, preferred audit methodology, and the complexity of your project. Different security service providers covered contract security in various ways.
It is essential to consider the testing methods, the kinds of vulnerabilities covered, the nature of the deliverables, price and timeline of the service. Additionally, you should consider the service provider’s level of experience in your industry and support in remediating the vulnerabilities identified.
FAQ
Which alternatives specialize in formal verification?
Certora and Runtime Verification specialize in formal smart contract verification.
Which platforms support multiple blockchain ecosystems?
CertiK, Hacken, Quantstamp, Halborn, and SlowMist support multiple blockchain ecosystems.
What should you compare when choosing an auditor?
Compare methodology, blockchain support, security techniques, deliverables, remediation, specialization, pricing, timelines.
Do contract auditors provide remediation support?
Many auditors provide remediation guidance and follow-up reviews after identified vulnerabilities.
