10 Best Immunefi Alternatives for Web3 Bug Bounties In 2026

I’ll go over the Best Immunefi Alternatives for Web3 Bug Bounties in this post, emphasizing the best platforms for vulnerability detection, blockchain audits, and smart contract security.

To assist you in selecting the best platform for safeguarding your Web3 project and digital assets, you will learn about their salient characteristics, supported blockchains, cost, reward schemes, advantages, and disadvantages.

How We Select the Top Immunefi Substitutes for Web3 Bug Bounties

• Web3 Security Expertise: Assess knowledge of blockchain security, DeFi, and smart contracts.
• Verify whether Ethereum, Solana, Polygon, and other networks are compatible with the supported blockchains.
• Bug Bounty Programs: Evaluate competitive, private, and public vulnerability finding initiatives.
• Examine the bounty amounts, severity levels, and researcher payment policies in the reward structure.
• Pricing and Fees: Examine platform fees, commissions, subscriptions, and engagement expenses.
• Evaluate the experience, knowledge, involvement, and reputation of the researcher community.
• Vulnerability Detection: Assess the platform’s capacity to spot important security flaws.

Key Points & Best Immunefi Alternatives for Web3 Bug Bounties

Platform	Explanation
Sherlock	Connects security researchers with Web3 projects through competitive audits and vulnerability contests.
Cantina	Provides competitive security audits, bug bounties, and expert-led blockchain security assessments.
HackerOne	Connects organizations with ethical hackers to identify vulnerabilities through coordinated bug bounty programs.
Bugcrowd	Offers crowdsourced security testing, vulnerability disclosure programs, and bug bounty management solutions.
HackenProof	Specializes in blockchain security, connecting Web3 projects with researchers through bug bounties.
Code4rena	Organizes competitive smart contract audits where researchers compete to discover security vulnerabilities.
Intigriti	Provides crowdsourced security testing and coordinated vulnerability disclosure for organizations worldwide.
Hashlock	Offers blockchain security audits, smart contract assessments, and Web3 vulnerability detection services.
Yogosha	Connects organizations with vetted ethical hackers for crowdsourced security testing and vulnerability discovery.
Synack	Combines vetted security researchers and technology to deliver continuous enterprise security testing.

10 Best Immunefi Alternatives for Web3 Bug Bounties

1. Sherlock

Sherlock is a Web3 security platform that focuses on vulnerability identification, competitive security evaluations, and smart contract audits. In order to find key vulnerabilities prior to deployment or exploitation, it links blockchain projects with seasoned security researchers. Competitive evaluations and security engagements guided by specialists are part of its audit model.

Supported Blockchains: Ethereum and EVM-compatible smart contract projects are among its primary sectors, and its supported ecosystems rely on specific audit scopes. Pricing or Fees: Rather than a single, uniform public subscription price, project costs are determined by the audit engagement, scope, and approved commercial conditions.

Reward Structure: Researchers are compensated based on prize pools, contest regulations, and the severity of their findings. Sherlock is appropriate for creators of smart contracts and DeFi protocols looking for impartial security evaluations.

Sherlock Pros & Cons

Pros	Explanation	Cons	Explanation
Audit contests + bounties	Combines competitive audits and bug bounties in one platform	Smaller researcher pool	Fewer participants than the largest platforms
Coverage model	Protocols can pair audits with exploit coverage, a unique selling point	EVM/Solidity-heavy	Less suited to non-EVM or Web2 scope
Senior watson system	Top auditors lead reviews, improving report quality	Judging disputes	Escalations over severity can frustrate researchers
Strong DeFi reputation	Trusted by many established DeFi protocols	Contest-centric	Continuous bounty coverage is less prominent than at Immunefi

2. Cantina

Through competitive audits, private engagements, and vulnerability discovery programs, Cantina, a Web3 security platform, links blockchain developers with expert security researchers. It helps initiatives looking for comprehensive studies of smart contracts, protocol evaluations, and continuous security enhancements.

Supported Blockchains: Depending on the audit scope of the project and the availability of researchers, Cantina works with a number of blockchain ecosystems, including Ethereum and other networks. Pricing or Fees: Depending on the complexity of the code, the length of the audit, the needs of the researcher, and the project’s scope, pricing is typically engagement-based.

Reward Structure: Competitive audits provide predetermined prize pools that are often allocated in accordance with competition regulations, acceptable findings, and severity. Blockchain infrastructure, DeFi protocols, and teams looking for expert-led security reviews will find Cantina very helpful.

Cantina Pros & Cons

Pros	Explanation	Cons	Explanation
Elite talent	Backed by Spearbit’s well-known security researchers	Premium pricing	Costs are higher than open contest platforms
Flexible services	Offers competitions, bounties, and managed audits	Fewer public programs	Smaller catalog than Immunefi
Quality triage	Experienced reviewers filter noise and low-quality reports	Selective access	Top engagements can favor established researchers
Modern tooling	Clean platform with good collaboration for teams	Newer bounty ecosystem	Less long-term track record than older platforms

3. HackerOne

HackerOne is a well-known crowdsourced cybersecurity tool that uses a global network of ethical hackers to assist businesses in finding security flaws. It offers security testing, expert triage services, vulnerability disclosure programs, and both public and private bug bounty programs.

Supported Blockchains: Ethereum, Polygon, Solana, and other blockchain assets can be tested when included in a program’s authorized scope; HackerOne does not provide a universal blockchain-specific network list. Pricing or Fees: Depending on program requirements, services, and security testing requirements, organizations typically obtain tailored pricing.

Reward Structure: Organizations set bounty amounts according to program policies, business effect, and vulnerability severity. It works well for Web3 businesses that need more comprehensive infrastructure and application security.

HackerOne Pros & Cons

Pros	Explanation	Cons	Explanation
Largest community	Huge researcher base across all security domains	Weak Web3 specialization	Triage teams may lack smart-contract depth
Enterprise features	Compliance, reporting, and integrations suit large organizations	High cost	Platform fees can be steep for startups
Mature triage	Established processes and managed services	Slower for crypto issues	Web3 reports may need extra explanation
Brand trust	Recognized by corporates and regulators	Fewer crypto-native programs	Fewer DeFi protocols run bounties here

4. Bugcrowd

A crowdsourced cybersecurity tool called Bugcrowd links companies with ethical hackers to find vulnerabilities in digital products, infrastructure, applications, and APIs. It offers penetration testing, security researcher management, managed bug bounty programs, and vulnerability disclosure programs.

Supported Blockchains: There isn’t a set list of blockchain compatibility published by Bugcrowd. When supported by a specific customer’s testing scope, Ethereum, Solana, Polygon, and other blockchain technologies can be added. Pricing or Fees: Program requirements, platform services, and the customer-funded incentive pool all affect pricing.

Reward System: When a customer approves a unique, legitimate vulnerability, researchers are rewarded financially. Payments are determined by program regulations, impact, and vulnerability prioritization. Web3 businesses that require more comprehensive cybersecurity coverage can benefit from Bugcrowd.

Bugcrowd Pros & Cons

Pros	Explanation	Cons	Explanation
Managed programs	Strong triage and program management	Limited Web3 focus	Mostly Web2 and enterprise targets
Flexible engagements	Bug bounty, VDP, pen testing, and attack surface management	Cost	Enterprise pricing may not suit small protocols
Large researcher base	Wide pool of ethical hackers	Few smart-contract experts	Blockchain specialists are a minority
Enterprise integrations	Works with Jira, Slack, and other tools	Less crypto community	Fewer DeFi-native programs and discussions

5. HackenProof

HackenProof is a specialized Web3 bug bounty platform that links security researchers and ethical hackers with blockchain enterprises. It assists companies in locating weaknesses in DeFi protocols, blockchain infrastructure, decentralized apps, smart contracts, and cryptocurrency exchanges. Additionally, the platform provides security audit, penetration testing, and vulnerability triage services. Supported

Blockchains: Depending on the specific program scope, its programs cover a variety of ecosystems, such as Ethereum, EVM-compatible networks, Starknet, and other blockchain environments. Pricing or Fees: Rather of employing a single, universal public subscription pricing, organizations can request tailored programs and typically pay for legitimate findings. Reward Structure: Each project defines its own bounties, with compensation based on the effect and severity of vulnerabilities.

HackenProof Pros & Cons

Pros	Explanation	Cons	Explanation
Web3 and crypto focus	Built for blockchain, exchanges, and DeFi	Smaller community	Fewer researchers than the big platforms
Hacken ecosystem	Connects with audits and security services from Hacken	Fewer top-tier protocols	Major DeFi names are more often on Immunefi
Managed triage	Dedicated team validates reports	Lower brand recognition	Less trusted by some top researchers
Flexible programs	Supports bounties, VDPs, and exchange programs	Smaller reward scale	Payouts are often lower than on top competitors

6. Code4rena

Code4rena gained notoriety for its competitive smart contract auditing methodology, in which independent security experts known as Wardens analyzed blockchain codebases and identified flaws. DeFi protocols, blockchain infrastructure, and decentralized apps were all included in its competitions.

The results were assessed using predetermined judging procedures. Supported Blockchains: Depending on the specific audit needs, previous competitions included Ethereum, EVM-compatible networks, Cosmos, Stellar, and other ecosystems.

Pricing or Fees: Prize pools were financed by previous contest organizers, and a $25 USDC deposit was required for some bounty entries. Reward Structure: Researchers competed for allotted prize pools and were typically awarded based on the severity, judging results, and acceptable findings. Important: Code4rena should be viewed as a historical alternative rather than an active platform for new initiatives, as it announced its wind-down in 2026.

Code4rena Pros & Cons

Pros	Explanation	Cons	Explanation
Large warden community	Many skilled auditors compete in contests	Time-boxed	Contests are not continuous bounties
Cost-effective	Competitive model gives wide review coverage for the price	Duplicate splits	Rewards are shared across duplicate findings
Transparency	Public reports and clear contest rules	Variable quality	Results depend on who participates
Strong reputation	Respected in the Ethereum and DeFi ecosystem	Judging disputes	Severity decisions can be contested

7. Intigriti

Intigriti is a crowdsourced security platform that uses professional security testing and ethical hackers to assist corporations find vulnerabilities. It provides managed security services, penetration testing, vulnerability disclosure programs, and both public and private bug bounty programs. Supported Blockchains: Web3 assets and cryptocurrencies can be added to certain application scopes, however Intigriti does not keep a list of all blockchains it supports.

Crypto-related security initiatives have been hosted on its platform. Pricing or Fees: Its sales team can provide pricing for its customized Core, Premium, and Enterprise plans. Reward Structure: Researchers are compensated according to acceptable findings, program-specific reward tiers, and the severity of vulnerabilities. Web3 companies looking for more comprehensive application security and managed vulnerability identification can benefit from Intigriti.

Intigriti Pros & Cons

Pros	Explanation	Cons	Explanation
European compliance	GDPR-friendly and strong in the EU market	Limited Web3 presence	Few blockchain-native programs
Good triage	Responsive and well-reviewed validation team	Smaller than the giants	Fewer researchers than HackerOne or Bugcrowd
Researcher-friendly	Known for good communication and community	Few smart-contract specialists	Weaker for deep DeFi issues
Flexible programs	Public, private, and VDP options	Less crypto brand trust	Not top of mind for crypto teams

8. Hashlock

Hashlock is a blockchain security firm that provides Web3 bug bounty services, penetration testing, and smart contract audits. Its bug bounty platform links blockchain projects with ethical hackers who find weaknesses in decentralized apps, network infrastructure, and smart contracts.

Testing scopes, vulnerability severity levels, reward systems, and submission requirements can all be specified by organizations. Supported Blockchains: Redbelly Network, which covers mainnet, testnet, node infrastructure, and specific smart contracts, is one of its published bounty programs.

Costs or Fees: Organizations can get in touch with Hashlock for specialized agreements; platform fees and subscription costs are not made public. Reward Structure: Every project sets its own qualifying rules, severity-based rewards, and reward caps.

Hashlock Pros & Cons

Pros	Explanation	Cons	Explanation
Web3-focused	Specializes in blockchain security	Newer and smaller	Less proven than established platforms
Audit + bounty combo	Offers audits alongside bounty services	Small researcher network	Fewer eyes on each program
Direct engagement	Closer working relationship with clients	Limited brand recognition	Fewer high-profile protocols
Multi-chain experience	Covers varied blockchain ecosystems	Less public data	Fewer visible case studies and payout stats

9. Yogosha

Yogosha is a cybersecurity platform that offers vulnerability disclosure services, penetration testing, and private bug bounty programs. Through its Yogosha Strike Force network, it links companies with a screened community of ethical hackers. Researchers find security flaws, report vulnerabilities, and offer proof-of-concept data along with suggestions for fixing them.

Blockchains that are supported: There isn’t a specific blockchain compatibility list published by Yogosha. Depending on the agreed-upon testing scope and available researcher competence, Web3 applications, smart contracts, and blockchain infrastructure can be taken into consideration.

Pricing or Fees: While precise platform charges necessitate a quote, pricing is tailored based on engagement requirements. Reward Structure: Companies pay for legitimate, acknowledged vulnerabilities; larger awards are often given to findings with more impact.

Yogosha Pros & Cons

Pros	Explanation	Cons	Explanation
Vetted researchers	Invite-only, vetted community (Strike Force)	Not Web3-native	Mainly aimed at Web2 and enterprise
Quality over quantity	Fewer but higher-quality reports	Limited public programs	Less visibility than open platforms
Managed triage	Strong validation and program support	Smaller community	Fewer researchers than the big platforms
European compliance	Strong for EU-based organizations	Few DeFi programs	Little smart-contract specialization

10. Synack

Synack is a cybersecurity platform that integrates managed penetration testing services, cutting-edge technology, and human security experts. Its Synack Red Team is made up of thoroughly screened ethical hackers who find weaknesses in infrastructure, networks, enterprise apps, and APIs.

Supported Blockchains: Synack does not focus solely on smart contract security or release a list of blockchain compatibility. A specially agreed-upon testing engagement may be necessary for Web3-related assets.

Pricing or Fees: Standard penetration testing costs $10,283, select AI-led assessments start at $4,181, and Synack14 engagements cost $27,120. Customized enterprise pricing is also offered. Reward Structure: Unlike standard public bug bounty incentives, researchers are compensated for accepted vulnerabilities and accomplished tasks.

Synack Pros & Cons

Pros	Explanation	Cons	Explanation
Elite vetted testers	The Synack Red Team (SRT) is carefully screened	Closed model	No open public bounty community
Controlled testing	Secure environment and monitored access	High cost	Priced for enterprise budgets
Continuous testing	Platform-based pen testing (PTaaS)	Not Web3-focused	Limited smart-contract and DeFi expertise
Enterprise-grade	Compliance, reporting, and governance	Less flexible	Unsuitable for open, crowd-driven bounties

Conclusion

In conclusion, the security needs, budget, and blockchain environment of your project will determine which Immunefi options are appropriate for Web3 bug bounties.

While HackerOne, Bugcrowd, and Intigriti offer more comprehensive cybersecurity services, Sherlock, Cantina, and HackenProof are excellent Web3-focused choices.

Before choosing the best platform to safeguard your smart contracts and decentralized apps, compare supported blockchains, reward schemes, cost, researcher experience, and auditing capabilities.

FAQ