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This article introduces a highly customizable JavaScript script designed to monitor global objects and variables in real-time using the browser’s developer console. The script is particularly useful for developers and security analysts who want to track interactions with specific objects on a webpage, especially those related to Google Tag Manager, Analytics, and other common web technologies.
Script Overview:
The script, named ObjectWatcher.js, can be pasted into the console tab of any webpage’s developer tools. It includes a predefined array of global objects and variables that are commonly of interest:
[javascript]
const specificGlobals = [
‘atDataLayer’, ‘google_tag_manager’, ‘google_tag_data’, ‘cookieAcceptance’, ‘cookiesAccepted’,
‘onYouTubeIframeAPIReady’, ‘webVitals’, ‘gaGlobal’, ‘data’, ‘source’, ‘ports’, ‘__gcse’,
‘module$exports$cse$search’, ‘module$exports$cse$CustomImageSearch’, ‘module$exports$cse$CustomWebSearch’,
‘google’, ‘module$exports$cse$searchcontrol’, ‘module$exports$cse$customsearchcontrol’, ‘_googCsa’,
‘angular’, ‘handlebars’, ‘underscore’, ‘moment’, ‘gapis’, ‘googletagmanager’, ‘WIZ’,
‘googleapis’, ‘WIZ_global_data’, ‘WIZ_progress’, ‘gws_wizbind’
];
[/javascript]
How to Use:
- Paste the script into the console (excluding the ASCII art at the top).
- Type `watchIt()` in the console to start monitoring.
- Interact with the webpage, and the script will alert you in the console whenever any of the specified objects are accessed, modified, or deleted.
Practical Example:
To test the script, load a webpage that uses Google Tag Manager or Analytics. After pasting the script and running watchIt(), click around the page. The console will display real-time interactions with the monitored objects.
What Undercode Say:
This script is a powerful tool for developers and security professionals who need to monitor and debug JavaScript objects in real-time. It provides deep insights into how webpages interact with various global objects, making it invaluable for both development and security analysis. Here are some additional commands and practices to enhance your debugging and monitoring capabilities:
1. Linux Command to Monitor Network Traffic:
sudo tcpdump -i eth0 -w output.pcap
This command captures network traffic on the `eth0` interface and saves it to a file for later analysis.
2. Windows Command to List Running Processes:
[cmd]
tasklist
[/cmd]
Use this command to view all running processes on a Windows machine, which can help identify suspicious activity.
3. Linux Command to Check Open Ports:
sudo netstat -tuln
This command lists all open ports and the services listening on them, useful for identifying potential security vulnerabilities.
4. Windows Command to Check System Integrity:
[cmd]
sfc /scannow
[/cmd]
This command scans and repairs system files, ensuring the integrity of the Windows operating system.
5. Linux Command to Monitor System Logs:
sudo tail -f /var/log/syslog
This command continuously monitors system logs, providing real-time insights into system activity.
6. Windows Command to Check Disk Usage:
[cmd]
wmic logicaldisk get size,freespace,caption
[/cmd]
This command displays disk usage information, helping you manage storage and identify potential issues.
- Linux Command to Monitor CPU and Memory Usage:
top
This command provides a real-time view of system resource usage, including CPU and memory.
8. Windows Command to Check Network Connections:
[cmd]
netstat -an
[/cmd]
This command lists all active network connections, useful for identifying unauthorized connections.
9. Linux Command to Check File Permissions:
ls -l /path/to/directory
This command lists file permissions, helping you ensure that sensitive files are properly secured.
10. Windows Command to Check Event Logs:
[cmd]
wevtutil qe System /c:10 /f:text
[/cmd]
This command retrieves the last 10 entries from the System event log, useful for troubleshooting and security analysis.
By combining the `ObjectWatcher.js` script with these commands, you can create a robust environment for monitoring, debugging, and securing your systems. Whether you’re a developer, security analyst, or IT professional, these tools will help you gain deeper insights into your systems and applications.
For more advanced monitoring and debugging techniques, consider exploring additional resources and tools available online. The possibilities are endless, and with the right tools, you can significantly enhance your ability to monitor and secure your systems.
References:
Hackers Feeds, Undercode AI
