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Cracking SSH Private Key Passphrases Using ssh2john and John the Ripper
Introduction SSH key-based authentication is widely considered more secure than password-based login. However, security does not end at key generation. If a private SSH key is compromised and protected with a weak passphrase, it can often be cracked offline—leading to full system access. In this blog post, we will walk through a realistic penetration testing…
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Resolving Wireshark Dissector Bug: Invalid Leading, Duplicated, or Trailing Space in Filter Name on Kali Linux
Article ID: KB-WS-001 Last Updated: December 16, 2025 Applies To: Wireshark 4.x on Kali Linux (Debian-based distributions) Severity: Medium (Prevents Wireshark from launching) Symptoms When launching Wireshark on Kali Linux, you encounter the following error dialog: Title: Dissector Bug: Wireshark Message: Dissector bug: Invalid leading, duplicated or trailing ‘ ‘ in filter name ‘frame.number ==…
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Maximizing Linux System Security: Mastering the Update, Upgrade, and Dist-Upgrade Commands
Introduction: In the ever-evolving landscape of cybersecurity, maintaining the security of your Linux system is paramount. One crucial aspect of this is keeping your software up-to-date. In this guide, we’ll explore three essential commands – sudo apt update, sudo apt upgrade -y, and sudo apt dist-upgrade -y – that play a crucial role in this…
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