Security researcher Cyber_World has already helped fix 45494 vulnerabilities.
Researcher reputation: 1670
Real name:
Praveen Kumar
Contact email:
[email protected]
Alternative Contacts:
[email protected]
Award / Bug Bounty I prefer:
I prefer bug bounty/swag/hof/vouchers
Paypal id - https://www.paypal.com/paypalme/cyberworld1
9 May, 2023
Thank you Praveen for the report and swift help to fix the vulnerability on our website. Your help is greatly appreciated!
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18 April, 2023
Thank you for letting us about the vulnerabilities found. Very helpful.
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5 September, 2022
Cyber_World helped us by pointing out some files that shouldn't be public! Thank you for the responsible disclosure!
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30 June, 2022
By your reports, we could understand and mitigate some security risks at our systems, thanks a lot for your help!
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17 March, 2022
Super professional and lightning-fast. Helped to resolve almost immediately. Fantastic!
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28 February, 2022
The Evollis team would like to thank Praveen for his work. Professional, very reactive and disclosing the full details of the vulnerability in a responsible manner. Thanks !
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9 December, 2021
Dear Cyber_World,
the SOC of Politecnico di Milano would like to thank you for disclosing us the vulnerability on our infrastructure.
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19 November, 2021
Cyber_World helped us by pointing out some log files that shouldn't be public! Thank you for the responsible disclosure and cordiality during the whole process!
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4 June, 2021
Found a clickjacking vulnerability and sent a professional and clear vulnerability report. Thank you Praveen!
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26 May, 2021
Helpful and polite. Thanks Praveen!
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14 May, 2021
Thank you for reporting an issue with the presentation website of the project and for the quick replies !
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8 April, 2021
I am very grateful for alerting me to this vulnerability and the clear instructions provided to mitigate the risk. I am also grateful for the extremely rapid response when getting in touch for further details. Thank you.
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12 March, 2021
Thank you Praveen for reporting an issue with our website and helping to resolve this. Good work. Thanks again.
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1 March, 2021
The team of CERT-rlp would like to thank Cyber_India for a responsible and coordinated disclosure of vulnerabilities.
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1 March, 2021
The team of CERT-rlp would like to thank Cyber_World for a responsible and coordinated disclosure of information disclosure vulnerabilities
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24 February, 2021
Thank you for reporting an open Website Security Issue and help us to fix it!
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24 February, 2021
Thank you for reporting us about the Website Security Issue.
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23 February, 2021
Thank you for reporting a public accessible file and for the very helpful, fast and pleasant communication. Error was fixed in seconds.
Thank you very much.
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22 February, 2021
Thanks for reporting my issues!
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21 February, 2021
Thanks Praveen for finding a disclosure issue !
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20 February, 2021
Thank you for reporting an issue with our website and assisting us with a fix for the vulnerability.
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20 February, 2021
We are grateful for the vulnerability report that you shared with us! Also, amazing response time!
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19 February, 2021
Thank you very much for your nice help and for reporting the beginner mistake to us :-)
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16 February, 2021
Thank you for pointing out that long forgotten vulnerable file on one of our servers. But it's gone now. :-)
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16 February, 2021
Brought to our attention some security issues. Fast and clear communication! Can recommend!
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12 February, 2021
Many thanks to Cyber_World for identifying a git issue with our site and helping us to resolve it without delay.
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10 February, 2021
Praveen helped locate and define a vulnerability in my WordPress install, I recommend his skills.
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10 February, 2021
Thank you for reporting an issue and for the helpful communication.
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10 February, 2021
Thank you for reporting a vulnerability on our site.
Due to your detailed report, we could close it within minutes.
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10 February, 2021
Thank you for reporting an open XMLRPC to us!
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8 February, 2021
Thanks for pointing out our XMLRPC vulnerability!
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8 February, 2021
Cyber_World informed us about a security issue on a website. Thanks to him, it's more secure now!
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8 February, 2021
Thank you very much for pointing out the XMLRPC vulnerability!
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7 February, 2021
Brought to my attention some security issues. Now resolved. Good communication.Recommended!
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6 February, 2021
Thanks to Praveen for reporting a potential security issue with our site - a public xmlrpc & json REST API.
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5 February, 2021
helped to close a not used api in wordpress, quick and fast respond.
Good luck to you and greetings from Germany.
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5 February, 2021
A big thank you to Praveen for finding and disclosing an XML-RPC Vulnerability on our website. He came back to us in minutes and was very helpful.
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4 February, 2021
Thanks for pointing out a public phpinfo() on our website.
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4 February, 2021
Thanks for pointing our our public XML-RPC. Very fast contact
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3 February, 2021
Thank You for the reporting and help to fix the issus. Stay Save! Greetings from Germany
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2 February, 2021
Many thanks for the report and recommendation! Merci beaucoup pour l'alerte et les explications !
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2 February, 2021
Thank you for reporting a security issue on our site, and for being so detailed and responsive!
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2 February, 2021
Thank you very much for your information and help. (XML-RPC API Wordpress) Regards..
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1 February, 2021
Thanks for point out a public phpinfo(). Very fast contact.
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1 February, 2021
Thank you for your notification and quick follow up. Good luck with your OSCP, I know what it takes to get it.
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1 February, 2021
Very kind and polite. reported very quickly and also helped in fixing bug. Best wishes from UK
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23 January, 2021
Thank you for the notification and quick & polite response.
Keep up the great work!
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22 January, 2021
Thank you for finding the information disclosure vulnerability! Praveen was very responsive!
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21 January, 2021
Thanks for pointing out a public phpinfo() on our website. A++
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21 January, 2021
Thank you for your tip for finding a vulnerability on the website. Very quick reply.
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20 January, 2021
We appliciate your help with the vulnerability.
The response to inquiries was quick, which was very helpful.
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20 January, 2021
Thank you for finding security issues on my website! keep it up!
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19 January, 2021
Thanks for pointing out a public phpinfo(). Very fast contact.
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19 January, 2021
We were informed of a vulnerability. Thank you to Praveen for telling us it existed.
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19 January, 2021
Thank you very much for the help with the vulnerability. Very fast contact.
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18 January, 2021
Thanks for finding a vulnerability on the website. Thanks to your tip, I could repair the issue and keep the website safe
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17 January, 2021
Praveen was very helpful in providing information about a security issue in our site. With his help, we were able to correct eveything and keep our site safe.
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15 January, 2021
Hi Praveen,
Thanks for the help with the vulnerability. Very fast and friendly contact.
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14 January, 2021
Thank you very much for informing us about our access vulnerability! The world needs more good guys like you! A+!
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13 January, 2021
Thanks for the help with the vulnerability. Friendly and fast contact
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13 January, 2021
Thank you very much for bringing a website vulnerability to my attention.
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12 January, 2021
Thanks for pointing out a public phpinfo();
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6 January, 2021
Very fast response, provided us with all the detailes. Keep up the good work!
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5 January, 2021
We were informed of a vulnerability via this site. Thank you to Praveen for telling us it existed.
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5 January, 2021
Helped us identifing a not needed file which privided information about underlying system. Thank you for your Work!
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4 January, 2021
Thanks a ton for finding a security vulnerability on our site. You definitely have our recommendation.
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4 January, 2021
Many thanks for finding a public "phpinfo();"
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3 January, 2021
Cyber_World was very courteous and provided the information needed to solve the problem very quickly. Your work is much appreciated, sir!
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2 January, 2021
Cyber_World was very courteous and provided the information needed to solve the problem very quickly. Your work is much appreciated, sir!
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29 December, 2020
Helped us to find the issue and our devs was able to fix it. Thanks for your fast replies and reporting the issue.
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29 December, 2020
Praveen reported a minor security issue and we could fix it immediately. Thanks a lot for letting us know!
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24 December, 2020
Very quick communication and very helpful. Thank you and have a great year!
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24 December, 2020
Kurze Reaktionszeit, klare Hinweise auf die Probleme. Deshalb meine Empfehlung & ein dickes Dankeschön!
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22 December, 2020
very quick response helped us fix the issue very quickly
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21 December, 2020
Thank you very much for your help. And to let us know how we keep our website safe. Good job!
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21 December, 2020
Praveen found a PHP file on our site that posed a security risk and generously informed us by email. The file has since been removed. Thanks so much!
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20 December, 2020
Thanks for showing us we had a vulnerability in our files, most appreciated!
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18 December, 2020
Thanks for reporting the issue!
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17 December, 2020
Thank you for the report, which we were not aware of and which we were able to fix in a few moments. A big help!
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17 December, 2020
Praveen reported a minor security issue which I could then easily fix by deleting an obsolete file. Thanks for the professional disclosure.
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16 December, 2020
Praveen reported a minor security issue and we could fix it immediately. Thanks a lot for letting us know!
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16 December, 2020
Many thanks for reporting the issue. Once the issue was known, it could be solved within seconds.
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16 December, 2020
Thanks for your report. It was a simple fix but security improvement. Good job!
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14 December, 2020
Thank you very much for your report. Thanks to your help we were able to solve the problem very quickly
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14 December, 2020
Thank you very much for your report. Thanks to your help we were able to solve the problem very quickly.
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12 December, 2020
Thanks for pointing out the vulnerability. I appreciate it!
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11 December, 2020
Thank you very much for your bug report. It was fixed within a few seconds. Thank you for bringing it to our attention :)
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9 December, 2020
Good job, thanks you very much for your report. The patch took a moment only, but it was necessary.
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9 December, 2020
Thanks for the report on the issues. Although the issues were simple fixes but the researcher was able to catch them and report the issues with details in a professional manner. Highly recommended!
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8 December, 2020
Honorable work. Thanks for reporting the error. We received a very polite & quick response with details and were able to fix the error within minutes.
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6 December, 2020
Thanks for the report. Tech Support had created the vulnerablity while investigating a problem for us which we probably wouldn't have noticed for a while.
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6 December, 2020
Thank you so much for your report. It was a simple matter to fix, but we never would have noticed the vulnerability without your input and advice.
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2 December, 2020
Nice contact, thanks for the report!
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2 December, 2020
Thanks for the report and recommendation! Fixed!
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1 December, 2020
Very polite and Knowledgeable reasearch. He provided me much detailsthat i was able to reproduce vulnerability and patch it with the help of mitigation steps. I recommend this specialist
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25 November, 2020
Thanks for your report! We have fixed the issue.
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