Coordinated and Responsible Vulnerability Disclosure Free Bug Bounty Program 421,794 coordinated disclosures
228,912 fixed vulnerabilities
571 bug bounties with 1111 websites
11,423 researchers, 932 honor badges

login_denied Top VIP Security Researcher Top Security Researcher of the Month Top VIP Security Researcher of the Month | Security Researcher Profile


Security researcher login_denied has already helped fix 7830 vulnerabilities.



Researcher reputation:  1180

Real name:
Andre

About me:
Mathematician from Germany

How to contact me:
[email protected]

Experience in Application Security
1-3 years

Award / Bug Bounty I prefer:
Bounty Payment (e.g. PayPal via [email protected]);
Swag (T-shirt, cup, gimmick);
Recognition, thanks, fame;
Feedback would be nice.

Follow me on:
Twitter

Recommendations and Acknowledgements | Full List:

    15 June, 2019
     bethe Thomas B :
Thank you very much for helping us to find and fix an unknown issue with our website.
    9 May, 2019
     CSIRTCV Team from CSIRT-CV:
Thank you for disclosing the XSS on a site under our constituency and all the info provided, so we were able to replicate the problem and initiate the fix.
    8 May, 2019
     iGopherFr Audrey from iGopher:
He found an XSS security flaw on our website that we did not notice despite our security tests. I recommend Andre without hesitation!
    1 May, 2019
     VKimWandel Andreas from von VKimWandel:
Vielen Dank für den Hinweis auf die Sicherheitsanfälligkeit auf unserer Website login_denied!
    5 April, 2019
     YanezDeGomorra Antonio Ranesi from antonioranesi.it:
Thanks you for your report on my website and and for your kind availability in providing the details immediately.
    3 April, 2019
     myparadisio Yves from Paradisio:
Thanks for pointing out the vulnerabilty on our website, login_denied!
    12 March, 2019
     cvetochnica_flo Maksim from FDW Ltd.:
Grateful for the bug! Found bug witch others did not find. And pleasant to talk to.
    11 March, 2019
     samueldebacker Samuel from Typi:
Thank you Andre, we now have fixed the XSS issue you found.
    3 March, 2019
     eco_sapiens kidsinhalf from eco-sapiens:
Thanks ! Very professionnal and helpful
    1 March, 2019
     ILT2010 Dave from Spectronics:
Thank you login_denied for disclosing the XSS issue and the prompt professionally detailed info/PoC that initiated the fix.
    27 February, 2019
     Timo_Ket Timothee from Smart&Soft:
Thanks for your kind an prompt help with fixing XSS on our site !
    25 February, 2019
     cyberday_gmbh DLO from CYBERDAY GmbH:
thanks for reporting
    22 February, 2019
     artentino Pablo from Artentino:
Login_denied warned us about an issu an issue in our site which has been fixed. We\'re very grateful to him and we highly recommend him! Cheers!
    20 February, 2019
     BullionInvestor Norman from BullionInvestor:
Thank you Andre for your faithful support to find & fix an XSS vulnerability I haven\'t noticed.
    31 January, 2019
     MihirGosai Admin from APKLinker:
Thanks for reporting vulnerability issues to APKLinker.
    29 January, 2019
     kovnickg Nick from FreshIT:
Andre reported about a XSS issue on our web site and provide detail by email. Thanks for making the internet safer!
    14 January, 2019
     watergateweb Alexios Tsiaparas from Watergate:
Thanks Andre for providing a very professional service. Your report provided all the information that we needed in order to rectify the XSS vulnerability that you have discovered.

Many thanks again!
    10 January, 2019
     deepthoughts10 Brian Clark from GC:
Thank you Andre for notifying us of the XSS issue you found but also in your quick reply with details that allowed us to isolate and fix the problem.
    7 January, 2019
     _light_dem Matteo from Mys:
Very professional and fast on reply, , it allowed us to find a xss vulnerability
    3 December, 2018
     rowlandarcher Rowland from Hittin' The Web Group LLC:
Very professional and responsive, helped me pinpoint and patch an XSS vulnerability. Great to work with, recommended.
    27 November, 2018
     OdedOfek Oded from N/A:
Andre made us aware of a security issue we hadn't found before and we're now working on fixing it. Thanks Andre for being one of the god guys :-)
    30 October, 2018
     RCikryt Roman from N/A:
Hi Andre, thank you very much for XSS notification and details. I have just fixed it. Thanks a lot!
    3 October, 2018
     andymarkelow Andrei Markelow from Online Buddies Inc.:
Thanks to Andre we could fix the vulnerability issue which was never discovered since many years!
    21 August, 2018
     EdgeMediaNet DevTeam from EDGE Media Network:
Andre was fantastic to work with. His feedback was valuable in finding issues on our sites. Friendly and very quick to answer. Highly recommended!!
    21 August, 2018
     cb_ximo Kino from pista3:
Andre found out a vulnerability on our site. With his help we have solved it. Thanks a lot
    15 August, 2018
     aboros Boris from Officeshoes:
Andre discovered a XSS vulnerability on our web site. He reported the technical details very quick. Thank you!
    14 August, 2018
     PaulDowding10 Paul from Connectix:
Many thanks to Andre for providing a quick and professional service. Our XSS vulnerability was identified and patched within 24 hours. Excellent!
    9 August, 2018
     b4tius dmitri from autoklad:
Thanks to Andre for helping to fix XSS vulnerability
    30 July, 2018
     fotoloco1 Blaise from fotoloco:
Excellent report: I was easily able to patch the security vulnerability with Andre's report. Thanks!
    18 July, 2018
     0xBashCat Basil from Noneya Business:
Andre responsibly disclosed and helped us to patch a XSS vulnerability on several production websites. He was very professional with his communications, and we're very thankful for his help. Sending a swag bag overseas ended up being more complicated than expected. But Andre seems to be a great guy, and we want to show our appreciation in every way we can. Thank you, Andre!
    13 July, 2018
     tnyaritm Tamás from Mediashop CEE:
Andre help us to find and fix XSS issue on our webshop!
Thank you for your help Andre!
    5 July, 2018
     SandiSchleicher SSchleicher from iConsumer:
Andre notified us about an XSS issue which has been fixed thanks to his help. We appreciate your help Andre!
    20 June, 2018
     teamhively Julian from Hively:
Thanks Andre for picking up an issue for us and for the prompt, friendly communication on the issue.
    15 June, 2018
     eJumpMedia Bogdan from eJump Media:
Thanks to Andre who found a vulnerability on a website I developed, I was able to fix it ASAP without any complications. His feedback was quick and accurate, with an open and nice attitude towards me. I strongly recommend Andre for anyone who faces security issues or anything related!
    14 June, 2018
     luziczek Maciek from Fly4free.pl:
Thanks to Andre for finding and reporting XSS vulnerability which has been fixed.
    12 June, 2018
     JoshHar25910089 Josh from ABA:
Thanks for finding the XSS vulnerability - very helpful, and he was quick to respond when I couldn't reproduce it.
    11 June, 2018
     GlamiBackstage Ondřej Čech from Glami:
Thank you Andre for spotting an XSS exploit - We appreciated the feedback and information to help us resolve the issue promptly!
    11 June, 2018
     wladiolo Paolo from Fastweb:
Thanks Andre for your responsible disclosure, it was very appreciated and useful.
    30 May, 2018
     SandiSchleicher SSchleicher from iConsumer:
Thanks for reporting the issue Andre. We always appreciate help to improve our service.
    21 May, 2018
     Printerous1 Ivan from Printerous:
Thank you for notifying us about security hole in our old website.
We didn't notice that there is a piece of old unused code that is still open to XSS breach.
    21 May, 2018
     FalikSh55583121 Falik Sher from TruConversion:
Thank you Andre for reporting the problem. Now the vulnerability has been fixed.
Much appreciated.
regards
    3 May, 2018
     Printerous1 Ivan from Printerous:
Andre helped us very quickly and clearly. I am very thankful for his good will and reporting in a responsible manner.
    23 April, 2018
     jcopley Joe Copley from oldhouses.com:
Andre was very helpful in identifying and resolving a vulnerability on our site. Many thanks!!
    16 April, 2018
     fourhundredkg 400kg from aim400kg:
Thanks for report about cookie hole on my site :)
    10 March, 2018
     dmholtof Don Holtof from Totally Fuzzzy:
Thanks to login_denied for the finding and reporting of the XSS vulnerability. All fixed now. Much appreciated.
    8 March, 2018
     777livecams Jan from 777 Systems:
Andre gave us detailed information about a vulnerability. Thank you very much!
    6 March, 2018
     tobyweston ELA from ELA:
Thanks to Andre for spotting an XSS exploit - We appreciated the feedback and information to help us resolve the issue promptly!
    3 March, 2018
     ZonaZeroNet Ramon from ZonaZero:
I would like to thank Andre for pointing us the XSS vulnerability at our site. Thank you very ,much!
    2 March, 2018
     kojotyPL kojoty from opencaching.pl:
I would like to thank Andre for pointing us the XSS vulnerability at our site. Our community appreciate your help!
    2 March, 2018
     LOcurrency Mario from LOC:
Thanks for a reporting the issue Andre, much appreciated. I'm thankful for the time you spent on investigating and reporting this in a responsible manner.
    2 March, 2018
     Marcooo83 Marco from Marco's Box:
Thank you for reporting the problem that hit my blog. Now the vulnerability has been fixed.
    27 February, 2018
     Forumotion Team from Forumotion:
Andre helped us quickly, efficiently and friendly to fix an issue. Many thanks!
    19 February, 2018
     almostdaniel daniel from N/A:
Andre responded to our inquiry with blazing speed, and exactly the amount of information we needed to track down the XSS issue. I'm very impressed, and thankful.
    31 January, 2018
     Advertise_ru Kirill from Advertise.ru:
Andre, thank you for your help.
We've fixed this XSS issue.
Best regards, Advertise.ru team.
    24 January, 2018
     hhsecwatch Hamish from Spikes:
I would like to thank Andre for his responsible disclosure of a XSS vulnerability. He provided us with sufficient detail to find the root cause and start working towards remediation. Keep up the good work!
    17 January, 2018
     fernaandogaspar Fernando from Linha de Código:
Andre encountered a vulnerability and helped to solve it thank you very much.
    16 January, 2018
     C_A_R_R_U FFinn from CAR.RU:
Andre has found a bug that was indeed not that easy to find. We've fixed it and everything is fine now.
We appreciate your help very much, thank you for your time and help!
    6 January, 2018
     gamingcfg Quiz from Gamingcfg:
Thank you Andre for your support is solving our XSS vulnerability. Because of your quick response, detailed explanation and good solution the problem was solved within 24 hours.
    2 January, 2018
     gsw34472742 Graeme W from N/A:
Thanks for pointing out the vulnerability in my site. I thought because I'd protected against script injection everything was ok but I hadn't considered reflected XSS
    22 December, 2017
     hit_ike Ikeda from Dai:
Thank you for your report, we fixed it.
Greatly appreciated.
    16 December, 2017
     ggocsei Gábor Göcsei from www.napi.hu:
Andre was really fast and correct. Thank you everything!
    25 November, 2017
     FUTBOL_TV_com Luchezar from Futbol TV:
Andre detected and pointed out an xss vulnerability in our website and we were able to fix it. Thanks again!
    17 November, 2017
     nietofarias Ignacio Nieto from Despegar:
Andre pointed us an XSS vulnerability on our website and we really appreciate that. There' re a few people like him that do this work selflessly. Thank you!
    16 November, 2017
     Alkis_Mar Alkis from apothema:
Thank you Andre for the alert to the XSS vulnerability. You are the best!
    7 November, 2017
     styledev Dewey from TechnoBuffalo:
Thank you again for alerting us to our issue.
    24 October, 2017
     usetrippy John from Trippy:
Andre was very helpful with multiple emails to check my initial fix and explain why I needed to modify it. Thanks for your help!
    20 October, 2017
     asninua Andrey from asn.in.ua:
Many thanks for your help
    9 October, 2017
     play_fun_games Tyler from Playing Fun Games:
Thanks for alerting me to the XSS vulnerability and providing detailed information about the bug.
    7 October, 2017
     hitsteps Jason from Hitsteps:
When Andre contacted us, our first reaction was denial.
How can somebody find a bug in our application.
He described it with examples, and Yes, bug was real and could cause danger. We've checked our logs and we got assured nobody compromised us before using this XSS vulnerability and we instantly fix this issue.
Thank you Andre for clear descriptions and fast replies, and helping us to secure our application.
    23 September, 2017
     simondale101 Simon from Dale:
Nice XSS pickup, and clear explaination.
    13 September, 2017
     carnevalifil Fil from Bk.it:
A precise and helpful notification that helped us securing our project!
An honest and professional researcher!
Thanks a lot!
    8 September, 2017
     beaudge Rod from Enbridge:
Andre has been a very helpful and professional researcher to work with.

Thanks for the alert to the XSS vulnerability.
    8 September, 2017
     rdrozd Robert from Swiat Czytnikow:
Thanks for letting me know about the problem and detailed response.
    5 September, 2017
     michaelsumner Michael from NameBio:
Thanks for the alert to the XSS vulnerability, and for the quick responses.

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Honor Badges


Number of Secured Websites

10+ Websites
50+ Websites
500+ Websites
WEB SECURITY VETERAN
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

REPUTABLE
10+ Recommends
FAMOUS
25+ Recommends
GLOBALLY TRUSTED
50+ Recommends

Distinguished Blog Author

1 Post
3 Posts
5+ Posts

Research Statistics



Total reports:35351
Total reports on VIP sites:2083
Total patched vulnerabilities:7830
Total vulnerabilities on Hold (Open Bug Bounty):846
Recommendations received:74
Active since:07.05.2017
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Open Bug Bounty Certificate





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Reported Vulnerabilities

All Submissions VIP Submissions

Domain Reported Status Type
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
patched
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting
30.06.2019
On Hold
Cross Site Scripting

  Latest Patched

 24.08.2019 animego.to
 24.08.2019 jrailpass.com
 24.08.2019 meteoam.it
 24.08.2019 mejorenvo.org
 23.08.2019 customs.gov.ng
 23.08.2019 canon.co.uk
 23.08.2019 cvent.com
 22.08.2019 cybrary.it
 22.08.2019 ohio.edu
 22.08.2019 vatgia.com

  Latest Blog Posts

19.08.2019 by ismailtsdln
IBM - Cross site Scripting [XSS]
15.08.2019 by thevivekkryadav
HOW I WAS BYPASSED CLOUDFLARE WAF
13.08.2019 by Renzi25031469
XSSCon - XSS Tool @Kitploit
13.08.2019 by Cur1S3
I Found a multiple xss on https://clickmeeting.com
13.08.2019 by ZIKADS
xss at anghami.com

  Recent Recommendations

    23 August, 2019
     MarkJasonRAng1:
tnx for the help
    22 August, 2019
     trash803:
Helpfully reported site vulnerability. Thanks.
    22 August, 2019
     SelectLine_GmbH:
Thanks for pointing out a vulnerability on one of our websites. And for the professional support.
    22 August, 2019
     Untanux:
Thank you for the report! We appreciate it.
    21 August, 2019
     aaccomazzi:
One more XSS bug discovered and patched thanks to Gh05tPT. Much appreciated!