Certified Professionals: GPEN

Certified Professionals:

GIAC Penetration Tester

The GPEN certification is for security personnel whose job duties involve assessing target networks and systems to find security vulnerabilities. Certification objectives include penetration-testing methodologies, the legal issues surrounding penetration testing and how to properly conduct a penetration test as well as best practice technical and non-technical techniques specific to conduct a penetration test.

242 of 5,151 GPEN Professionals
Analyst * Name First Certified Expiration
10640 D, Andrew Aug 29, 2016 Aug 31, 2020
143 D'Angelo, Andy Sep 10, 2008 Sep 30, 2012
8876 D'Agostino, Vincent Jul 21, 2014 Jul 31, 2018
1908 D'Autilia, Graziano Mar 30, 2009 Mar 31, 2013
8956 D'Herdt, Jan Sep 04, 2014 Sep 30, 2018
9249 D'Huy , Pierre Jan 15, 2015 Jan 31, 2019
9095 D'Ussel, Alexis Oct 31, 2014 Oct 31, 2018
6429 Da Silva, Ivan Jan 18, 2011 Jan 31, 2019
9492 da Silva, Marcelo Apr 27, 2015 Apr 30, 2019
2658 Dabbieri, Ryan Aug 05, 2009 Aug 31, 2013
2613 Dabler, Jim Jul 31, 2009 Jun 30, 2019
4553 Dade, Chuck Jun 24, 2010 Jun 30, 2014
8795 Daggett, Dan Jun 06, 2014 Jun 30, 2018
6278 Dahiya, Puneet Dec 16, 2010 Dec 31, 2014
1423 Dahle, Erik Feb 10, 2009 Feb 28, 2013
9164 Dai, Yifang Dec 01, 2014 Dec 31, 2018
5283 Daigle, Philip Sep 03, 2010 Sep 30, 2014
8324 Dale, Chris Andre Aug 05, 2013 Aug 31, 2017
10422 Daley, Joshua Jun 16, 2016 Jun 30, 2020
8388 Dall'Ara, Enrico Ermanno Sep 12, 2013 Sep 30, 2017
7984 Dalton, David Jan 02, 2013 Jan 31, 2017
8909 Daly, Chris Aug 15, 2014 Aug 31, 2018
10330 Damghani, Payman May 07, 2016 May 31, 2020
7206 Danda, Richard Jun 06, 2011 Jun 30, 2019
9853 Daneshvaran, Roshan Oct 29, 2015 Oct 31, 2019
7004 Dang, Anh Apr 01, 2011 Apr 30, 2019
9972 Danhieux, Pieter Dec 14, 2015 Dec 31, 2019
8243 Daniels, Shane Jun 11, 2013 Jun 30, 2017
8287 Daniluk, Michael Jul 12, 2013 Jul 31, 2017
7686 Darakdjian, Arsen Jun 04, 2012 Jun 30, 2020
10171 Darche, Marc-Aurele Feb 29, 2016 Feb 29, 2020
10690 Darnell, Barrett Sep 10, 2016 Sep 30, 2020
9500 Dash, Steven May 01, 2015 May 31, 2019
10522 Dashut, Harmony Jul 25, 2016 Jul 31, 2020
4493 Daskalakis, Henry Jun 11, 2010 Jun 30, 2018
8077 Dauberschmidt, Markus Feb 21, 2013 Feb 28, 2017
7781 Daugherty, Richard Aug 27, 2012 Aug 31, 2020
1924 Daveler, Michael Mar 31, 2009 Mar 31, 2013
7845 David, Antoine Oct 17, 2012 Oct 31, 2016
9485 David, Dumitru Apr 22, 2015 Apr 30, 2019
10188 David, Jim Mar 10, 2016 Mar 31, 2020
1808 Davidoff, Sherri Mar 18, 2009 Mar 31, 2017
3354 Davidson, Darryl Nov 20, 2009 Nov 30, 2013
9738 Davidson, Ray Sep 12, 2015 Sep 30, 2019
7777 Davies, Alex Aug 23, 2012 Aug 31, 2016
3928 Davies, Bob Mar 06, 2010 Mar 31, 2014
8931 Davies, Scott Aug 22, 2014 Aug 31, 2018
248 Davis, Brough Sep 26, 2008 Sep 30, 2012
9273 Davis, Carl Feb 02, 2015 Feb 28, 2019
9509 Davis, Charles May 05, 2015 May 31, 2019
9286 Davis, Drew Feb 06, 2015 Feb 28, 2019
10257 Davis, Dylan Apr 01, 2016 Apr 30, 2020
7943 Davis, Kristopher Nov 29, 2012 Nov 30, 2016
10297 Davis, Matthew Apr 23, 2016 Apr 30, 2020
2903 Davis, Michael Aug 31, 2009 Aug 31, 2013
7399 Davison, Evan Nov 21, 2011 Nov 30, 2015
8670 Davisson, Kevin Mar 17, 2014 Mar 31, 2018
7815 Davydov, Eugene Sep 23, 2012 Sep 30, 2020
9430 Dawson, Ian Apr 03, 2015 Apr 30, 2019
299 Dawson, Karl Oct 08, 2008 Oct 31, 2016
6138 Dawson, Wayne Nov 29, 2010 Nov 30, 2018
9090 Day, Dave Oct 28, 2014 Oct 31, 2018
2694 Day, Donna Aug 13, 2009 Aug 31, 2017
8475 Day, Joshua Oct 28, 2013 Oct 31, 2017
8543 Day, Mark Dec 17, 2013 Dec 31, 2021
4 de Beaupre, Adrien Apr 23, 2008 Apr 30, 2020
1893 De Boda, Rob Mar 27, 2009 Mar 31, 2021
8506 de Bruin, Eric Nov 20, 2013 Nov 30, 2017
7723 de Castro Simon, Miguel Angel Jul 10, 2012 Jul 31, 2016
6409 De Clerck, Frederic Jan 13, 2011 Jan 31, 2015
9696 De Clercq, Wouter Aug 25, 2015 Aug 31, 2019
1938 De Hamer, Martijn Apr 02, 2009 Apr 30, 2017
4838 de Jacquier, Antony Jul 20, 2010 Jul 31, 2018
5408 de Jager, Ward Sep 20, 2010 Sep 30, 2014
7989 De La Cruz, Elyson Jan 08, 2013 Jan 31, 2021
4148 de la Torre, Enrique Apr 16, 2010 Apr 30, 2014
7138 de Laura, Davey Apr 20, 2011 Apr 30, 2019
7881 De Tore, Mario Nov 02, 2012 Nov 30, 2016
8360 De Vries, Harm Aug 28, 2013 Aug 31, 2017
4618 Dean, Bill Jun 30, 2010 Jun 30, 2018
9197 Dean, Nick Dec 17, 2014 Dec 31, 2018
8460 Death, Darren Oct 22, 2013 Oct 31, 2017
7909 DeBlock, Michael Nov 15, 2012 Nov 30, 2016
9447 Deck, Stephen Apr 08, 2015 Apr 30, 2019
6644 Decker, Erik Feb 22, 2011 Feb 28, 2015
7426 Decker, Lehlan Dec 12, 2011 Dec 31, 2019
9189 Decker, Michael Dec 13, 2014 Dec 31, 2018
5168 Dee, Kalman Aug 20, 2010 Aug 31, 2014
9807 DeGeiso, Paul Oct 15, 2015 Oct 31, 2019
668 deGruyter, John Nov 25, 2008 Nov 30, 2012
1228 Degtar, Max Jan 09, 2009 Jan 31, 2017
9865 Del Barba Sand, Dennis Nov 02, 2015 Nov 30, 2019
8799 del Toro, Duncan Jun 10, 2014 Jun 30, 2018
5648 Delacruz, Joel Oct 01, 2010 Oct 31, 2014
7854 Delewski, Nick Oct 23, 2012 Oct 31, 2020
8045 Delfa, Eugenio Feb 07, 2013 Feb 28, 2017
2474 Delgado, Cesar Jul 11, 2009 Jul 31, 2017
10057 Delgado, Pablo Jan 23, 2016 Jan 31, 2020
4628 Delgado, Rodolfo Jul 01, 2010 Jul 31, 2018
7447 Delis, Gautier Jan 07, 2012 Jan 31, 2016
10061 Dellert, Michael Jan 26, 2016 Jan 31, 2020
4883 Delorimier, Jacques Jul 22, 2010 Jul 31, 2014
8185 Demczuk, Lukasz Apr 26, 2013 Apr 30, 2017
8058 Demers-Keller, Brandon Feb 12, 2013 Feb 28, 2017
7064 Demeure, Stéphane Apr 11, 2011 Apr 30, 2015
5143 Denault, Tom Aug 14, 2010 Aug 31, 2014
8769 Denisselle, Pierre-Marie May 23, 2014 May 31, 2018
8337 Denker, Brandon Aug 08, 2013 Aug 31, 2017
9686 Denney, Robert Aug 20, 2015 Aug 31, 2019
2403 Dennis, Lynell Jul 01, 2009 Jul 31, 2017
10036 Denno, Jason Jan 12, 2016 Jan 31, 2020
3139 Denny, Matt Oct 26, 2009 Oct 31, 2013
8932 Denton, Hal Aug 22, 2014 Aug 31, 2018
9309 Depaul, Jonathan Feb 18, 2015 Feb 28, 2019
2913 DeRosa, Anthony Aug 31, 2009 Mar 31, 2014
8329 Deryke, Allen Aug 06, 2013 Aug 31, 2017
9805 Deshaies, Jerome Oct 14, 2015 Oct 31, 2019
9687 DeSilets, Bob Aug 20, 2015 Aug 31, 2019
8241 Desmarais, Francois-Xavier Jun 10, 2013 Jun 30, 2017
10298 DeSoto, Manny Apr 23, 2016 Apr 30, 2020
5428 Deuble, Ashley Sep 23, 2010 Jul 31, 2016
7162 Devigne, Jerome Apr 29, 2011 Apr 30, 2015
8539 Devine, Brian Dec 16, 2013 Dec 31, 2017
10414 Devito, Mark Jun 13, 2016 Jun 30, 2020
7342 Devlet, Giray Sep 27, 2011 Sep 30, 2015
10380 deVries, Alex May 31, 2016 May 31, 2020
8738 Deweerdt, Maxim May 08, 2014 May 31, 2018
10656 Dexter, Benjamin Aug 31, 2016 Aug 31, 2020
2838 Dexter, Gordon Aug 31, 2009 Feb 28, 2018
9458 Dexter, Jason Apr 10, 2015 Apr 30, 2019
8625 Dhanhani, Huda Feb 16, 2014 Feb 28, 2018
9444 Dharnikota, Tharaka Apr 07, 2015 Apr 30, 2019
8631 Dhiraprayudti, Nuttakorn Feb 21, 2014 Feb 28, 2018
7337 Di Bassinga, Nsiona Sep 15, 2011 Sep 30, 2015
10413 Diakodimitris, Dimitri Jun 13, 2016 Jun 30, 2020
1768 Diamond, Bruce Mar 13, 2009 Mar 31, 2017
7354 Diamond, Dan Oct 05, 2011 Oct 31, 2019
7358 Diaz, Sanders Oct 10, 2011 Oct 31, 2019
4458 Diaz Hidalgo, Carlos Juan Jun 07, 2010 Jun 30, 2014
10542 Dibbini, Shadi Jul 28, 2016 Jul 31, 2020
8442 Dickerson, Don Oct 11, 2013 Oct 31, 2017
5078 Dickey, Lee Aug 04, 2010 Aug 31, 2014
2569 Dickinson, Alan Jul 21, 2009 Jul 31, 2013
9737 DiCristina, Raymond Sep 12, 2015 Sep 30, 2019
5133 DiDomenico, Charles Aug 11, 2010 Aug 31, 2018
10623 DiEnna, David Aug 25, 2016 Aug 31, 2020
6469 Dierkes, Alex Jan 27, 2011 May 31, 2018
10042 Diesel, Patrick Jan 15, 2016 Jan 31, 2020
8920 Dikker, Nick Aug 19, 2014 Aug 31, 2018
2978 Dillema, Feike W. Sep 24, 2009 Sep 30, 2013
10602 Dillon, Sean Aug 17, 2016 Aug 31, 2020
9950 Dinelli, Enrico Dec 08, 2015 Dec 31, 2019
10653 Ding, Tongzu Aug 30, 2016 Aug 31, 2020
10387 Dinu, Alexandru Jun 02, 2016 Jun 30, 2020
4818 Dion, Denis Jul 19, 2010 Jul 31, 2014
6193 Diskin, Gal Dec 06, 2010 Dec 31, 2014
8719 Distler, Dennis Apr 18, 2014 Sep 30, 2019
10144 Ditch, Killian Feb 19, 2016 Feb 29, 2020
9362 Ditmer, Robert Mar 09, 2015 Mar 31, 2019
7681 Diwakar, Jaisimha May 30, 2012 May 31, 2016
7425 Diwan, Kapinder Dec 12, 2011 Dec 31, 2019
6679 Dix, Colin Feb 28, 2011 Feb 28, 2019
7536 Dixon, Chris Mar 06, 2012 Mar 31, 2016
8680 Dixon, Drew W. Mar 21, 2014 Mar 31, 2018
9457 Dixon, Lesley Apr 10, 2015 Apr 30, 2019
3739 Dixon, Mark Jan 29, 2010 Jan 31, 2018
2088 Dixon, Robert Apr 28, 2009 Apr 30, 2013
7226 Dizenhouse, Benjamin Jun 17, 2011 Jun 30, 2015
8027 Dobb, Michael Jan 29, 2013 Jan 31, 2017
9239 Dockter, Paul Jan 09, 2015 Jan 31, 2019
3579 Dodd, David Jan 07, 2010 Jan 31, 2018
8038 Doherty, Cameron Feb 01, 2013 Feb 28, 2017
7024 Doherty, Kevin Apr 04, 2011 Apr 30, 2015
8961 Dolbey, Terry Sep 05, 2014 Sep 30, 2018
7212 Domingo Yaguez, Gustavo Jun 11, 2011 Jun 30, 2015
10697 Dominguez, Ivan Sep 13, 2016 Sep 30, 2020
6909 Dongas, Nick Mar 19, 2011 Mar 31, 2015
2174 Donovan, Michael May 09, 2009 May 31, 2017
10630 Doolabh, Manoj Aug 26, 2016 Aug 31, 2020
7351 Doolittle, Terry Sep 30, 2011 Sep 30, 2015
10234 Doornebosch, Nick Mar 29, 2016 Mar 31, 2020
8035 Dorado, Jose Luis Feb 01, 2013 Feb 28, 2017
10003 Doris, Edward Dec 23, 2015 Dec 31, 2019
8787 Dorsey, Schuyler May 30, 2014 May 31, 2018
10224 Dossena, Mattia Mar 25, 2016 Mar 31, 2020
7454 Douba, Nadeem Jan 17, 2012 Jan 31, 2016
9025 Doudiet, Marc Oct 03, 2014 Oct 31, 2018
9839 Dougherty, Kevin Oct 27, 2015 Oct 31, 2019
8479 Douglas, Jonathan Oct 31, 2013 Oct 31, 2017
3954 Douglas, Joshua Mar 10, 2010 Mar 31, 2018
7338 Douglas, Mick Sep 17, 2011 Sep 30, 2015
1393 Douglass, John Feb 09, 2009 Feb 28, 2013
9728 Douglass, William Sep 11, 2015 Sep 30, 2019
1079 Douhine, Davy Dec 22, 2008 Dec 31, 2012
7296 Douse, Ryan Aug 11, 2011 Aug 31, 2019
10726 Dove, Andy Sep 20, 2016 Sep 30, 2020
9255 Dowd, David Jan 22, 2015 Jan 31, 2019
6654 Dowd, James Feb 23, 2011 Feb 28, 2019
9230 Downer, Nick Jan 06, 2015 Jan 31, 2019
189 Downs, Martin Sep 17, 2008 Sep 30, 2012
9648 Downward, Peter Jul 30, 2015 Jul 31, 2019
4758 Doyle, Ben Jul 14, 2010 Jul 31, 2014
7979 Doyle, Kelly Dec 27, 2012 Dec 31, 2016
8767 Dragut, Julian May 22, 2014 May 31, 2018
7280 Drake, Tony Aug 02, 2011 Aug 31, 2019
8702 Drennon, Kenneth Apr 03, 2014 Apr 30, 2019
9268 Drews, Ritchie Jan 29, 2015 Jan 31, 2019
7709 Druin, Jeremy Jun 25, 2012 Jun 30, 2020
2969 Dsouza, Obrey Sep 19, 2009 Sep 30, 2013
9213 du Preez, Cornel Dec 30, 2014 Dec 31, 2018
8002 du Toit, Wouter Jan 15, 2013 Jan 31, 2021
10625 Dubs, Justin Aug 26, 2016 Aug 31, 2020
1788 Dubsky, Christopher Mar 16, 2009 Mar 31, 2017
9514 Duca, Maftei Emilian May 08, 2015 May 31, 2019
8265 Duccelius, Michael Jun 20, 2013 Jun 30, 2017
4528 Duckwall, Alva Jun 18, 2010 Sep 30, 2015
10143 Ducret, Laurent Feb 19, 2016 Feb 29, 2020
8219 Duffy, Christopher May 24, 2013 May 31, 2021
7239 Dufva, Nils Jun 30, 2011 Jun 30, 2015
6594 Dumolt, Steven Feb 11, 2011 Feb 28, 2019
7655 Dunn, Daniel May 21, 2012 May 31, 2020
3453 Dunn, Patrick Dec 09, 2009 Dec 31, 2013
3489 Dunnack, Sara Dec 16, 2009 Dec 31, 2017
9624 Dunnahoe, John Edward Jul 14, 2015 Jul 31, 2019
7631 Dunnam, Rick May 02, 2012 May 31, 2016
5703 Dunning, John Oct 01, 2010 Oct 31, 2014
4733 Dunsirn, Alyssa Jul 12, 2010 Jul 31, 2018
2178 Dunstan, Patrick May 12, 2009 May 31, 2013
9314 Duram, Christopher Feb 20, 2015 Feb 28, 2019
9345 Durand, Mathieu Mar 04, 2015 Mar 31, 2019
7800 Durgin, Andrew Sep 13, 2012 Sep 30, 2016
2279 Durkee, Ralph Jun 01, 2009 Jun 30, 2021
7439 Dustin, Joshua Dec 21, 2011 Dec 31, 2015
8330 Dutkowski, Paul Aug 07, 2013 Aug 31, 2017
10567 Dvilyanski, M Aug 05, 2016 Aug 31, 2020
7143 Dworznik, Dariusz Apr 21, 2011 Apr 30, 2019
334 Dyckman, Christian Oct 16, 2008 Oct 31, 2016
6088 Dygert, Evan Nov 22, 2010 Mar 31, 2020
6897 Dykstra, Jim Mar 17, 2011 Mar 31, 2015
8605 Dyrmose, Michael Feb 06, 2014 Feb 28, 2018
8096 Dyrnes, Erlend Feb 26, 2013 Feb 28, 2017
8131 Dyson, Brian Mar 19, 2013 Mar 31, 2017