Okba_Elkantara

@okba

Security Researcher

Algeria, Biskra, El kantaraJoined April 2025

About

Self-taught | Specialized in Blockchain Security via hands-on testing and continuous research

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Available for Web3 security audits, smart contract bug bounty programs, and ethical hacking discussions focused on blockchain security.

Okba_Elkantara's blogs

Blockchain Security Insightsokba-sec.hashnode.dev3 posts

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Recently published

okba-sec.hashnode.dev

Weaponizing SSH_AUTH_SOCK Hijack : Real-World Exploitation Techniques

Author : GUIAR OQBA 🧩 Introduction: SSH (Secure Shell) is one of the most critical secure communication protocols in modern systems. It is widely used for secure remote access, system administration, and server management.One of the core components...

Jul 28, 20255 min read

okba-sec.hashnode.dev

📌 Concerning Repetitions in 24-Word Mnemonic Phrases

👤 By GUIAR OQBA – ELKANTARA ⚠️ Note: This article contains a summarized version of the full technical report. To view the complete version including detailed images, visit:👉 https://zenodo.org/records/15786076 📊 General Introduction & Tools Use...

Jul 22, 20254 min read

okba-sec.hashnode.dev

Statistical Weaknesses in BIP39 Seed Phrases and Their Real-World Implications

Introduction The BIP39 standard plays a crucial role in cryptocurrency wallets by generating mnemonic seed phrases that provide access to user funds. While considered secure by design, BIP39 may suffer from statistical weaknesses in its real-world im...

Apr 19, 20253 min read

Okba_Elkantara

About

Available for

Okba_Elkantara's blogs

Recently published

Weaponizing SSH_AUTH_SOCK Hijack : Real-World Exploitation Techniques

📌 Concerning Repetitions in 24-Word Mnemonic Phrases

Statistical Weaknesses in BIP39 Seed Phrases and Their Real-World Implications

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Okba_Elkantara

About

Available for

Okba_Elkantara's blogs

Recently published

Weaponizing SSH_AUTH_SOCK Hijack : Real-World Exploitation Techniques

📌 Concerning Repetitions in 24-Word Mnemonic Phrases

Statistical Weaknesses in BIP39 Seed Phrases and Their Real-World Implications