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@githubfoam
githubfoam / ai security cheat sheet
Last active August 5, 2025 21:26
ai security cheat sheet
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AI red teaming is a specialized security practice that simulates real-world attacks against artificial intelligence (AI) systems. Its purpose is to uncover vulnerabilities and weaknesses before malicious actors can exploit them. Effective AI red teaming requires a deep understanding of AI, cybersecurity, and ethical hacking. This training focuses on the attack techniques, vulnerabilities, and defense strategies, providing hands-on experience to build expertise in AI security. Here's a breakdown of best practices:
1. Define Clear Objectives and Scope:
Target Identification: Precisely define the AI systems or components under scrutiny. This could be a facial recognition system, a fraud detection model, a chatbot, or any other AI-powered application.
Threat Modeling: Develop realistic attack scenarios based on potential threats. Consider the attacker's motives, skills,
@githubfoam
githubfoam / DHCP Cheat Sheet
Last active July 25, 2025 13:09
DHCP Cheat Sheet
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The error message indicates that dnsmasq failed to start because port 53 (DNS) is already in use by another process. This prevents dnsmasq from binding to the required port.
Steps to Fix the Issue
1. Identify the Process Using Port 53
Run the following command to check which process is occupying port 53:
sudo netstat -tulnp | grep :53
or
@githubfoam
githubfoam / VMWare Workstation Cheat Sheet
Last active February 9, 2024 10:42
VMWare Workstation Cheat Sheet
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#compare mac address in the network adapter settings to the one in the output of command ip addr
Open a terminal on your Ubuntu 20.04 virtual machine.
Run the ip addr command to display information about the network interfaces.
ip addr
Virtual Machine Settings - Hardware - Network Adapter - Advanced - MAC Address
@githubfoam
githubfoam / fortigate sniff packet cheat sheet
Last active August 28, 2025 15:20
fortigate sniff packet cheat sheet
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diagnose sniffer packet vs diag debug flow filter
# diagnose sniffer packet checks if the packet reaches fortigate
# diag debug flow filter checks packet's traffic within fortigate internally
diagnose debug flow #trace per-packet operations for flow tracing
diagnose sniffer packet #trace per-Ethernet frame
#=====================================================================
#WEB GUI v7.2.3
@githubfoam
githubfoam / nmap cheat sheet
Last active July 25, 2025 13:09
nmap cheat sheet
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#detect rogue dhcp server
nmap -sU -p67,68 --script dhcp-discover <network_range>
sudo nmap --script broadcast-dhcp-discover
sudo nmap --script broadcast-dhcp-discover -e eth0
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Wireshark Output for nmap IP Fragment Scan (Sample):
Filter: ip.flags.mf == 1
No. Time Source Destination Protocol Length Info
@githubfoam
githubfoam / email security cheat sheet
Last active January 17, 2024 03:55
email security cheat sheet
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Email remains a critical communication tool for businesses but is also a common vector for various cyber threats. Here are some email threats and countermeasures:
Phishing: Attackers impersonate legitimate entities to deceive recipients into revealing sensitive information or performing actions. Countermeasures include employee training for recognizing phishing attempts, implementing email filters to flag suspicious emails, and using authentication methods like DMARC, SPF, and DKIM to verify sender authenticity.
Malware Attachments: Emails may contain attachments (e.g., documents, executables) carrying malware. Employing robust antivirus software, sandboxing attachments for analysis, and restricting executable attachments can mitigate this threat.
Spoofing and Business Email Compromise (BEC): Attackers spoof email addresses to impersonate trusted entities, aiming to trick recipients into transferring
@githubfoam
githubfoam / network devices security( switch,router etc) cheat sheet
Last active July 25, 2025 13:09
network devices security( switch,router etc) cheat sheet
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#dhcp snooping chatgpt
DHCP snooping is a feature used to mitigate rogue DHCP server attacks by filtering DHCP messages received from untrusted sources. Here's a step-by-step guide to configure, test, and verify DHCP snooping on a Cisco switch:
Configuration Steps:
1. Enable DHCP Snooping:
bash
Copy code
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githubfoam / SQL injection cheat sheet
Last active January 11, 2024 07:14
SQL injection cheat sheet
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#ChatGPT
SQL injection is a type of security vulnerability that occurs when an attacker is able to manipulate an application's SQL query by injecting malicious SQL code. The vulnerability arises when user input is not properly validated or sanitized before being used in SQL queries. This can lead to unauthorized access, manipulation of data, and potential exposure of sensitive information stored in a database.
Here's a more detailed explanation:
Input Handling: Many web applications take user input through forms, search boxes, or other input mechanisms. This input is often used to construct SQL queries that interact with a database.
Improper Validation: If the application does not properly validate or sanitize user input, an attacker can craft input in a way that manipulates the SQL query being executed.
@githubfoam
githubfoam / hp aruba mobility controller cheat sheet
Last active December 18, 2023 13:17
hp aruba mobility controller cheat sheet
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grep "authentication failed" /var/log/host-*.log
find /var/log -name "host-*.log" -print0 | xargs -0 grep "authentication failed"
for file in /var/log/host-*.log; do
grep "authentication failed" "$file"
done
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githubfoam / Investigation Path - cwe id 552
Created December 12, 2023 08:16
Investigation Path - cwe id 552
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On CentOS 7, the installation path of Apache Tomcat might vary depending on how it was installed.
Default Path: Apache Tomcat is often installed
ls /usr/share/tomcat
ls /usr/local/tomcat
use the find command to locate the Tomcat directory if you're uncertain about the installation path