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kongwenbin | Security Researcher Profile

Security researcher kongwenbin has already helped fix 106 vulnerabilities.

Researcher reputation:  40

Real name:
Kong Wen Bin

About me:
Hello there! I am a security researcher from Singapore. I hunt for bugs during my own free time to learn and become better in my skills and expertise towards web security.

I report any identified bugs to organisations around the world, free of charge! It is my way of contributing towards a safer internet. :)

NOTE #1: I DO NOT USE ANY INTRUSIVE TOOLS. Only Firefox web browser and my brain.

NOTE #2: All of my reports have ABSOLUTELY NOTHING to do with my employer in any possible ways.

How to contact me:
If I reported a bug on your website, please reach out to me via Twitter (Direct Message is Open to all) so that we can fix it together to protect your users.

Alternative Contacts:
Once again, please contact me directly to fix the bugs.

Experience in Application Security
1-3 years

Award / Bug Bounty I prefer:
To reward me for my effort (optional):
- Coffee money (any amount to
- Write a Recommendation on my profile (it's free!)
- Hall of Fame
- Acknowledgement Letter

Halls of Fame:
Over 50 organisations have already officially acknowledged my effort in one of the ways mentioned above and I appreciate it! It was an honor working with them!

Follow me on:

Recommendations and Acknowledgements

    17 May, 2018
     nidapo5 Nick Porter from 5th Dunstable Scout Group:
@kongwenbin has been very helpful in finding two vulnerabilities on our website, and reporting them clearly and promptly, so they could be fixed. Thank you!
    7 May, 2018
     kevag_telekom Diana Guenzel from KEVAG Telekom:
Thank you @kongwenbin for your PoC and good work!
    17 December, 2017
     ISOatUO Jim Cheetham from University of Otago:
Thanks to @kongwenbin, who very quickly sent a clear PoC that identified the vulnerability.

Please login via Twitter to add a recommendation

Honor Badges

Number of Secured Websites

10+ Websites
50+ Websites
500+ Websites
1000+ Websites

Advanced Security Research

WAF Bypasser
CSRF Master
30+ Reports
AppSec Logic Master
30+ Reports
Fastest Fix
Fix in 24 hours

Outstanding Achievements

Secured OBB
OBB Advocate
Improved OBB

Commitment to Remediate and Patch

Patch Master
55% Patched
Patch Guru
65% Patched
Patch Lord
75% Patched

Recommendations and Recognition

10+ Recommends
25+ Recommends
50+ Recommends

Distinguished Blog Author

1 Post
3 Posts
5+ Posts

Research Statistics

Total reports:209
Total reports on VIP sites:19
Total patched vulnerabilities:106
Recommendations received:3
Active since:26.09.2017

Open Bug Bounty Certificate

No posts in blog yet

Reported Vulnerabilities

All Submissions VIP Submissions

Domain Reported Status Type
Cross Site Scripting
Cross Site Scripting
Cross Site Scripting
Cross Site Scripting
Cross Site Scripting
Cross Site Scripting
Open Redirect

  Latest Patched


  Latest Blog Posts

04.04.2020 by Rando02355205
(Alibaba) [IDOR] - [Bug Bounty]
12.03.2020 by Rando02355205
(Paypal) [CSP High Level] - [XSS Reflected] - [Bug Bounty] - [Write Up]
08.03.2020 by CybeReports XSS Vulnerability| CybeReports
29.02.2020 by Rando02355205
(Google) - [Stored XSS] - [Bug Bounty] - [WriteUp] - [24/02/2020]
10.02.2020 by 0xrocky
Stored XSS on

  Recent Recommendations

    2 June, 2020
Thank you for making the web a better place. Professional and helpful contact.
    2 June, 2020
Thanks for reporting the vulnerability, and the detailed explanation of the mechanism and possible effects. This really contibuted to a quick resolution, the site developer exactly knew where to find and how t fix the issue.

All fixed, many thanks
    2 June, 2020
Thank you very much for reporting a problem on our website and help with giving detailed description and explanations on how we could solve it.
    1 June, 2020
Thanks Aaryan for reporting the vulnerability about xxs.
We will soon fix the problem
    31 May, 2020
Brilliant detection of two devious vulnerabilities, with clear explanations which meant I was able to fix both of them very quickly. Many many thanks