Protect your company and data from hackers

DEFENSAHACKER is a boutique consulting firm, providing cybersecurity advisory, auditing services and security training to companies worldwide

4

top cybersecurity certifications

+150

penetration testing projects

+20

years experience

Ethical Hacking Excellence

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.

CEH Certified Ethical Hacker
OSCP Offensive Security Certified Professional
CBSP Certified Blockchain Security Professional
CSCA Certified Smart Contract Auditor
.1

Penetration Testing

Involves simulated cyberattacks on a system, network, or application to identify vulnerabilities and weaknesses that malicious hackers could exploit. It also helps to assess the effectiveness of existing security measures

.2

Vulnerability Assessment

Conducts a systematic review of hosts, servers, networks and applications to identify, classify and validate vulnerabilities that can affect the security of the company

.3

Smart Contracts & Web3

New technologies such as blockchain, involve many risks. We assess the infrastructure, smart contracts audits and blockchain deployment for Web3 projects

.4

OT Cybersecurity Audit

OT (Operational Technology) is a paramount component in our industries. PLCs, Scada and IoT components are usually misconfigured and allow attackers to disrupt warehouse operations. We identify and help you to patch any vulnerability

TRY OUR ON-CHAIN SMART CONTRACT SCANNER

SUPPORTS ETHEREUM, ARBITRUM, BSC, AVALANCHE, POLYGON, BASE, GNOSIS

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What is Penetration Testing?

A penetration test, colloquially known as a pentest or as ethical hacking, is an authorized simulated attack performed to[…]

Petrochemical plant

OT industrial cybersecurity: Hardening the ModBus protocol

OT stands for Operational Technology, contrary to the IT that is Information Technology. Inside IT[…]

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Client Testimonials

We have been impressed with his 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.

United Airlines

Hewlett Packard Enterprise would like to thank both Roshan Thomas and Jacobo Avariento working with DefensaHacker.com for reporting CVE-2017-12544

Hewlett Packard Enterprise

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 an extremely skilled employee. He always served our customers very courteously and professionally.

Airbus Cybersecurity

Our Team

With more than 20 years experience in cybersecurity

Jacobo Avariento

Security Lead

Jacobo is a Certified Ethical Hacker, smart contracts auditor and staff product security engineer with over 20 years of experience in cybersecurity, particularly within the banking and finance industries.

Contact Info

Let’s Chat

Get in touch with us to discuss your needs.