4
top cybersecurity certifications
+150
penetration testing projects
+20
years experience
Cybersecurity Excellence
Ethical Hacking involves simulated cyberattacks on a system, network, or application to identify vulnerabilities and weaknesses that malicious hackers could exploit. It helps assess the effectiveness of existing security measures.
Having worked as a consultant and penetration tester for top tier banks, the European Central Bank, pharmaceutical and automotive companies across several regions and continents. We have a vast experience in all types of companies and projects.





.1
Penetration Testing
Involves simulated cyberattacks on a system, network, or application to identify and exploit vulnerabilities and weaknesses before malicious hackers do. It also helps to assess the effectiveness of your existing security measures in the cloud, internal networks, IoT or OT infrastructure
.2
Smart Contracts Audits & Web3 Security
New technologies such as blockchain, involve many risks. We audit your smart contracts, infrastructure and your deployments before it’s too late
.3
Mobile Apps Security Testing
With advanced reverse engineering techniques, we assess the security of your mobile apps and also propose hardening to block hackers to intercept your data and enhance your security
Our Team
Extensive experience tailored for your needs

Jacobo Avariento
Security Lead
Jacobo is a Certified Ethical Hacker, smart contracts auditor and lead security engineer with over 20 years of experience in cybersecurity, particularly within the banking and finance industries
Client Testimonials

United
We have been impressed with this persistence in finding bugs, his ability to explain his findings and Mr. Avariento is welcome and respected contributor to our Bounty program and we look forward to any additional submissions he provides

Airbus
Mr. Avariento was entrusted with the Technical Management of the Security Testing project team at the European Central Bank. He always fulfilled his tasks to our absolute satisfaction. He was extremely skilled employee and always served our customers very courteously and professionally

HP Enterprise
Hewlett Packard Enterprise would like to thank Jacobo Avariento working with Defensahacker for reporting CVE-2017-12544
TRY OUR ON-CHAIN SMART CONTRACT SCANNER
SUPPORTS ETHEREUM, ARBITRUM, BSC, AVALANCHE, POLYGON, BASE, GNOSIS
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Contact Info
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