From Smart Contract Audits to Regulatory Readiness

Hacken is an end-to-end blockchain security and compliance partner for digital assets.

Min project size
$10,000+
Hourly rate
Undisclosed
Employees
50 - 249
Locations
Lisboa, Portugal
Year founded
Founded 2017

No have been added yet...

Pricing Snapshot

Min. project size $10,000+

Avg. hourly rate Undisclosed

Rating for cost 4.7 /5

What Clients Have Said

Hacken offers competitive pricing and strong value for cost, appealing to diverse clients. While specific costs aren't disclosed, reviews highlight their responsiveness, timely delivery, and alignment with client budgets, affirming their reputation for quality service in security audits.

This summary is based on verified Clutch reviews.

Most Common Project Size

$10,000 - $49,999 based on 23 reviews

< $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

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Hacken Review Insights

Overall Review Rating

4.9

Quality 4.9
Schedule 4.9
Cost 4.7
Willing to Refer 4.9

Top Mentions

Review Highlights

Proactive Problem-Solving Approach

Clients appreciate Hacken's proactive approach to problem-solving and their ability to anticipate potential issues before they arise. This forward-thinking mindset contributes to the success of their projects and enhances client confidence.
Room for Improvement in Notification Timing

While Hacken receives high praise overall, a few clients noted that they would prefer more timely notifications about findings during audits, rather than receiving all results at the end. Hacken has acknowledged this feedback and made changes for future projects.
Impressive Technical Expertise

Clients are impressed by Hacken's technical expertise, especially in cybersecurity and blockchain technologies. Their ability to conduct rigorous audits and provide insightful recommendations is frequently highlighted as a key strength.
Consistent Delivery of High-Quality Reports

Hacken is recognized for delivering detailed, high-quality reports that provide actionable insights and recommendations. Clients value the thoroughness and clarity of these reports, which contribute to informed decision-making and improved security.
Strong Communication and Responsiveness

Clients consistently highlight Hacken's excellent communication skills and responsiveness. They appreciate the team's ability to provide clear, structured updates and maintain open lines of communication throughout the project lifecycle.
Efficient and Professional Team

Clients describe Hacken's team as efficient, professional, and a pleasure to work with. Their ability to deliver results within agreed timeframes and maintain professionalism throughout engagements is consistently praised.

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Hacken Reviews

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Application Testing Blockchain Cybersecurity
Confidential
Nov. - Dec. 2024

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"We had a great experience working with Hacken."

Feb 10, 2025

Head Of Engineering, SMART VALOR

Dmitrijs Rozvadovskis

Financial services
Switzerland
11-50 Employees
Online Review
Verified

Hacken worked on a smart contract audit for a Web3 AI company. The team was responsible for identifying vulnerabilities and providing feedback on how to strengthen the contract.

Hacken identified and remediated vulnerabilities, ensuring compliance with standards. The team provided a thorough, high-quality audit and proved professional, offering fast and insightful feedback and delivering on time. Overall, the client was impressed with Hacken's seamless communication.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am the Head of Engineering of SMART VALOR

Describe what your company does in a single sentence.

Smart Valor is a Switzerland-based Web3 AI company established in 2017. It provides cryptocurrency AI market intelligence solutions and a fully regulated and compliant crypto investment platform for retail and banks.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire Hacken to accomplish?

Solidity Smart Contract audit

SOLUTION

How did you find Hacken?

Online Search
Referral

Why did you select Hacken over others?

High ratings
Pricing fit our budget
Great culture fit
Good value for cost
Referred to me

How many teammates from Hacken were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

We had a great experience working with Hacken. Their team is highly professional, providing fast and insightful feedback throughout the process. The audit was thorough and high-quality, with detailed feedback that helped us strengthen our security. Communication was seamless, and both technical and account management teams were always responsive to our needs.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

Vulnerabilities Identified and Remediated
Compliance with Standards

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Items were delivered on time! HACKEN team always in touch and provide rapid replies to any of our questions.

What was your primary form of communication with Hacken?

Virtual Meeting
Email or Messaging App

What did you find most impressive or unique about this company?

Professional team! Great communication!

Are there any areas for improvement or something Hacken could have done differently?

All good!

RATINGS

5.0

Blockchain Computer Engineering Cybersecurity
$50,000 to $199,999
Nov. 2024 - Ongoing

4.5

Quality: 4.5

Schedule: 4.5

Cost: 5.0

Willing to Refer: 5.0

"Their depth of understanding and quality of reviews are outstanding."

Nov 25, 2024

Head of Protocol Engineering, Covalent

Pranay Valson

Other industries
Vancouver, British Columbia
11-50 Employees
Online Review

Hacken provides smart contract auditing services for a blockchain data company. The team audits the client's smart contract code for their new protocol and checks for conflicts with the specifications.

Hacken has delivered the report and suggested fixes for the issues they found. The client has published the report on their website and used it on social media to engage their community. Moreover, the client is impressed with the team's understanding of the project and the quality of the review.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am the Head of Protocol Engineering of Covalent

Describe what your company does in a single sentence.

Blockchain data provider with decentralization and data provisioning API endpoints as-a-service.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire Hacken to accomplish?

Find issues with smart contract code
Find conflicts with specification compared to actual implementation
Increase security and validate end-user experience goals

SOLUTION

How did you find Hacken?

Met at a Conference

Why did you select Hacken over others?

High ratings
Great culture fit
Good value for cost
Referred to me

How many teammates from Hacken were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Audit smart contract code for new protocol with regards to light client development for Data availablity sampling using rental NFTs as mechanism to associate work done in the network against rewards on-chain. Called the Ethereum Wayback Machine, these light clients operator-controller NFT contracts, enable NFT claim/mint, Light Client registration/delegation, rewards calculation and redemption on any EVM chain based on the ERC4907 non-transferrable "rental-nft" standard.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

Report was delivered post hacken suggested issues and fixes. Report publised on the website and also used in socials for engaging the community. Further ways of community audits are being explored.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Timelines were crisp and clear. Everyone adhered to them as stated and we had a clear version of what was happening in the timeline on the hacken portal.

What was your primary form of communication with Hacken?

Virtual Meeting
Email or Messaging App

What did you find most impressive or unique about this company?

Their depth of understanding and quality of reviews are outstanding.

Are there any areas for improvement or something Hacken could have done differently?

Keep up the great work!

RATINGS

4.5

Blockchain
$10,000 to $49,999
November 2024

5.0

Quality: 4.5

Schedule: 5.0

Cost: 4.5

Willing to Refer: 5.0

"Their communication process and issues tracking were very easy and straightforward."

Nov 22, 2024

Founder, Predexyo

Matteo Spinosa

Other industries
England
1-10 Employees
Online Review

Hacken provided smart contract and blockchain auditing services for a blockchain company. The team was responsible for offering Solidity Code revision services.

Hacken's constant communication to track issues and review the code received positive feedback from the client. The team was responsive to the client's needs and provided timely deliverables throughout the engagement. Their issue-tracking process was a hallmark of their performance.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am the Founder of Predexyo

Describe what your company does in a single sentence.

Blockchain tech and software solutions

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire Hacken to accomplish?

smart contract audit
improving efficiency of our protocol

SOLUTION

How did you find Hacken?

Token2049 Dubai

Why did you select Hacken over others?

High ratings
Company values aligned

How many teammates from Hacken were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Solidity Code Review Services

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

constant communication between teams to track issues and review code

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Yes

What was your primary form of communication with Hacken?

In-Person Meeting
Virtual Meeting
Email or Messaging App

What did you find most impressive or unique about this company?

Their communication process and issues tracking were very easy and straightforward

Are there any areas for improvement or something Hacken could have done differently?

discuss different payment plan instead of 100% upfront payment

RATINGS

5.0

Blockchain Cybersecurity
$50,000 to $199,999
Aug. - Sep. 2024

4.5

Quality: 4.5

Schedule: 5.0

Cost: 4.0

Willing to Refer: 4.5

"Everything requested was done on time."

Oct 8, 2024

CISO, 21X AG

Thomas Zraunig

Financial services
Germany
11-50 Employees
Online Review
Verified

A finance market solutions firm hired Hacken to audit and manage their smart contracts before going live. The team reviewed and tested three smart contracts with 3,700 lines of code for Polygon.

Hacken discovered several items that needed to be reviewed and mitigated. The team delivered on time, and their project management was excellent. Moreover, internal stakeholders were particularly impressed with the service provider's technical knowledge and testing expertise.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am the CISO of 21X AG

Describe what your company does in a single sentence.

21X AG

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire Hacken to accomplish?
Secure our smart contracts before Go-Live

SOLUTION

How did you find Hacken?

Referral

Why did you select Hacken over others?

Referred to me

How many teammates from Hacken were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

3 smart contracts with 3700 lines of code for Polygon

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

Yes, we did discover quite some items which had been findings or are things that work as designed but are reviewed once more in order to mitigate them properly

Describe their project management. Did they deliver items on time? How did they respond to your needs?

The project management was done well, and everything requested was done on time.

What was your primary form of communication with Hacken?

Virtual Meeting
Email or Messaging App

What did you find most impressive or unique about this company?

It was nice to see that the testers als had good knowledge on the business functions of the smart contracts and did test them as well

Are there any areas for improvement or something Hacken could have done differently?

as already mentioned in the meeting - informing earlier upfront, that there are a lot of findings to come at the last day of the audit in the Hacken portal, especially for internal communication with management

RATINGS

4.5

Blockchain Cybersecurity Other IT Consulting and SI
$10,000 to $49,999
September 2024

5.0

Quality: 5.0

Schedule: 5.0

Cost: 4.5

Willing to Refer: 5.0

"Hacken was at the top of their game."

Oct 3, 2024

Strategic Advisor, Aerobloc

Anonymous

Information technology
Dubai, United Arab Emirates
1-10 Employees
Online Review
Verified

Hacken audited the smart contracts of an internet services company. The team reviewed the client's smart contracts to find any vulnerabilities in the code of their staking and treasury contracts.

Hacken provided a clean audit and had a well-run business. The team was efficient and met the client's expectations. Hacken is professional, knowledgeable, and easy to work with. Hacken delivered work within the agreed timeframe and communicated via email and virtual meetings.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am the Strategic Advisor of Aerobloc

Describe what your company does in a single sentence.

Bringing the internet to the trillion dollar aviation industry with decentralisation and AI technologies

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire Hacken to accomplish?

Audit 4 of our smart contracts

SOLUTION

How did you find Hacken?

Their reputation preceeds them

Why did you select Hacken over others?

High ratings
Great culture fit
Good value for cost

How many teammates from Hacken were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

Review of our smart contracts to find any vulnerabilities in the code for our staking contact, treasury contract, utility Token ($AERRO) and our first Real World Application ("RWAp") smart contract for airport costs (primarily landing charges)

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

Clean audit

Describe their project management. Did they deliver items on time? How did they respond to your needs?

From the initial discussion to the conclusion and publication of the audit report all of the team members we interacted with were very professional and knew their business. It was a pleasure to work with them. I realise I am saying this about auditors.... but really, they were great

What was your primary form of communication with Hacken?

Virtual Meeting
Email or Messaging App

What did you find most impressive or unique about this company?

It is a well run business, very efficient and they do what they say they will do within the agreed timeframe. They talk the talk and walk the walk.

Are there any areas for improvement or something Hacken could have done differently?

No, Hacken was at the top of their game.

RATINGS

5.0

Cybersecurity
$10,000 to $49,999
September 2024

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"They were very responsive and everything was exactly on time."

Oct 1, 2024

CTO, Obligate AG

Daniel Killenberger

Other industries
Switzerland
11-50 Employees
Online Review
Verified

Hacken provided cybersecurity services for a blockchain company. The team was responsible for auditing the client's smart contracts to find possible security vulnerabilities.

Through Hacken's efforts, the client found issues that took precise care and attention to detail. The team was dedicated to solving problems correctly, even in a short timeline. They were responsive, and everything was on time. The team communicated via virtual meetings, email, and messaging apps.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am the CTO of Obligate AG

Describe what your company does in a single sentence.

We issue debt securities on blockchain to allow corporates to raise funds while investors get yield.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire Hacken to accomplish?

Audit smart contract for security vulnerabilities

SOLUTION

How did you find Hacken?

Online Search

Why did you select Hacken over others?

High ratings
Pricing fit our budget
Good value for cost
Other

How many teammates from Hacken were assigned to this project?

2-5 Employees

Describe the scope of work in detail. Please include a summary of key deliverables.

The provider was supposed to thoroughly review the smart contract for vulnerabilities.
Deliverable was a report with findings that we would remedy with final report issued once fixes have concluded.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

Found issues that took clear care and attention to detail to find. Dedication to resolving issues properly even in short timeline.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

They were very responsive and everything was exactly on time.

What was your primary form of communication with Hacken?

Virtual Meeting
Email or Messaging App

What did you find most impressive or unique about this company?

Timeliness and attention to detail.

Are there any areas for improvement or something Hacken could have done differently?

Issues all came at the end in one go. Would have preferred to have been notified when they came up. Got confirmation that this has already changed for projects after ours which is good.

RATINGS

5.0

Cybersecurity
Confidential
Sep. - Oct. 2023

5.0

Quality: 5.0

Schedule: 4.5

Cost: 5.0

Willing to Refer: 5.0

"We are pleased with the partnership as a whole."

Nov 15, 2023

CEO, Vzone Solutions

Muneeb Ahmad

Other industries
United Arab Emirates
51-200 Employees
Online Review
Verified

A Metaverse solutions company hired Hacken to conduct a security assessment for their platform. The team audited the platform's infrastructure and identified business risks for the client.

Thanks to Hacken, the client achieved a perfect security evaluation score and continues to scale their business. Hacken ensured excellent project management and communicated effectively via virtual meetings. Ultimately, the client was delighted with the engagement.

The client submitted this review online.

BACKGROUND

Please describe your company and position.

I am the CEO of Vzone Solutions

Describe what your company does in a single sentence.

Vzone Solution Is a ecosystem of Metaverse, P2E, U2E, and decentralized social media platforms.

OPPORTUNITY / CHALLENGE

What specific goals or objectives did you hire Hacken to accomplish?

Our Project Audits so we can enhance our security's
Future Collebrations

SOLUTION

How did you find Hacken?

Listing.help

Why did you select Hacken over others?

High ratings

Describe the scope of work in detail. Please include a summary of key deliverables.

complete security assessment for vrcscan.com and identification of business risk for infrastructure.

RESULTS & FEEDBACK

What were the measurable outcomes from the project that demonstrate progress or success?

we got 10 score out of 10 after the security assessment. it will help us to grow in future.

Describe their project management. Did they deliver items on time? How did they respond to your needs?

Very appreciated.

What was your primary form of communication with Hacken?

Virtual Meeting

What did you find most impressive or unique about this company?

We are pleased with the partnership as a whole. 💝

Are there any areas for improvement or something Hacken could have done differently?

RATINGS

5.0

Cybersecurity
$10,000 to $49,999
Oct. - Jan. 2020

5.0

Quality: 4.5

Schedule: 5.0

Cost: 5.0

Willing to Refer: 4.5

"Their brilliant communication skills and their ability to get work done according to deadlines were impressive."

Feb 12, 2021

Blockchain Developer, Crypto Exchange Firm

Anonymous

Financial services
International Falls, Minnesota
51-200 Employees
Online Review
Verified

A crypto exchange firm hired Hacken to provide smart contract security auditing services. The goal was to discover the client's vulnerabilities in smart contract logic and receive security recommendations.

Thanks to Hacken's input, the client was able to determine their vulnerabilities. The workflow and communication were fantastic. The team was responsive and was able to deliver tasks promptly.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

I work for a cryptocurrency exchange. I am a Blockchain developer in it.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Hacken?

We hired Hacken for providing smart contracts security audits in Ethereum.

What were your goals for this project?

Our goals were to discover vulnerabilities in smart contracts logic and get security recommendations.

SOLUTION

How did you select Hacken?

We reviewed a couple of offers and selected Hacken by price/time/quality metrics.

Describe the project in detail.

Hacken performed manual and automatic source code review of our smart contracts.

What was the team composition?

I was the only one in charge of the blockchain and smart-contracts part of the work.

RESULTS & FEEDBACK

Can you share any outcomes from the project that demonstrate progress or success?

We have received a file with report where each contract and contracts' functions had a propose description, input/output parameters, etc. It described the overall rating and found vulnerabilities.

How effective was the workflow between your team and theirs?

The workflow was great. We communicated and started the project very fast.

What did you find most impressive about this company?

Their brilliant communication skills and their ability to get work done according to deadlines were impressive.

Are there any areas for improvement?

We have argued about the expected scope of work from Hacken. In the end, we received one possible vulnerability in the report, that didn't actually exsist, because of it. The coordination of the scope of work should be done more accurately.

RATINGS

5.0

Cybersecurity
$10,000 to $49,999
Oct. 2020 - Ongoing

5.0

Quality: 5.0

Schedule: 5.0

Cost: 5.0

Willing to Refer: 5.0

"We received a quick response from HackenProof Team each time we receive a ticket with a bug."

Aug 25, 2020

Payment Systems Security PM, Tickets Travel Network

Vladimir Krasnozhenov

Hospitality & leisure
Vienna, Austria
201-500 Employees
Online Review
Verified

Hacken provides a bug bounty program for a travel company to enhance and secure their site security. The program is implemented in over 30 websites of the client.

Hacken showed amazing results from the program they implemented. They even went as far as explaining the client's security gaps and business logic. The team was thorough and experts in the cybersecurity field.

The client submitted this review online.

BACKGROUND

Please describe your company and your position there.

Tickets Travel Network is one of the most distinctive and expansive travel distribution companies in the EMEA region. As a smart travel provider, we offer our customers wide range of products: flights, train and bus journeys, hotels, citybreaks, car rental, and other travel- and leisure-related services.

OPPORTUNITY / CHALLENGE

For what projects/services did your company hire Hacken?

We ordered bug bounty program as a service to make sure our websites are securely configured.

What were your goals for this project?

The main goal was to check the website security.

SOLUTION

How did you select Hacken?

We had several conversations with the same Companies but Hackenproof met our main goals and budgets.

Describe the project in detail.

Tickets Travel Network has more than 30 websites in different countries. The main goal of bug bounty program is to improve level of IT security.

What was the team composition?

Only Team Leads are involved at this project.

RESULTS & FEEDBACK

Can you share any outcomes from the project that demonstrate progress or success?

We are highly satisfied regarding results of the program. Also we're satisfied in communication with Hackenproof team. Hackenproof ethical hackers showed us gap's in the security and business logic. All gaps were fixed and double checked.

How effective was the workflow between your team and theirs?

Highly effective. We receive a quick response from HackenProof Team each time we receive a ticket with bug.

What did you find most impressive about this company?

From my point of view, HackenProof business idea is really great. They help businesses holding an IT security in a proper level.

Are there any areas for improvement?

No. We are highly satisfied.

RATINGS

5.0

"We are highly satisfied;)"

Showing 21-29 of 29 Reviews

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Verified Client Reviews: 23

Overall Review Rating: 4.9

Source: Clutch

Last Updated: November 3, 2025

Business Entity

Business Entity Name	Hacken OÜ
Source	Estonia e-Business Register
Jurisdiction of Formation	Estonia
Date of Formation	October 13, 2017
Status	Active
Last Updated	December 20, 2024
ID	14351915

Credit Report Results

International Credit Risk Assessment	High Risk
Source	Creditsafe
Last Updated	December 20, 2024

*Clutch performed additional verification on this company and confirmed that there are no negative legal filings or large outstanding debts. This company has also received 3 or more verified reviews on our platform.

Learn More About The Clutch Verification Process

Locations (1)

Av. Duque de Loulé 12 Lisboa, Portugal 1050-085

16 - 20

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Hacken

From Smart Contract Audits to Regulatory Readiness

1 Locations

Services

Focus

Industries

Clients

Pricing Snapshot

What Clients Have Said

Most Common Project Size

Select a service to see pricing information

Reviews

Hacken Review Insights

Overall Review Rating

Top Mentions

Review Highlights

Proactive Problem-Solving Approach

Room for Improvement in Notification Timing

Impressive Technical Expertise

Consistent Delivery of High-Quality Reports

Strong Communication and Responsiveness

Efficient and Professional Team

Reviews mentioning:

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Smart Contracts Services for Finance Market Solutions Firm

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Portfolio & Awards

Verification