Certified Penetration Testers

Certified Penetration Testers

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Displaying 433 of 1155 Certified Professionals
Name Expires Certification
O'Donnal, Trevor January 31, 2020 GAWN
O'Banion, Patrick August 31, 2022 GCIH
O'Boyle, Ryan June 30, 2022 GCIH
O'Brien, Andy June 30, 2019 GAWN
O'Brien, Christopher GSE GPEN
O'Brien, Christopher GSE GXPN
O'Brien, Christopher GSE GCIH
O'Brien, David P. August 31, 2020 GCIH
O'Brien, James March 31, 2023 GCIH
O'Brien, Jessica June 30, 2022 GPEN
O'Brien, Luke July 31, 2022 GCIH
O'Brien, Michael September 30, 2021 GWAPT
O'Brien, Michael January 31, 2021 GPEN
O'Brien, Michael December 31, 2019 GCIH
O'Brien, Michael July 31, 2022 GAWN
O'Brien, Sean October 31, 2020 GCIH
O'Callaghan, Cathal May 31, 2021 GPEN
O'Ceallaigh, Des March 31, 2021 GWAPT
O'Connell, Adam March 31, 2023 GCIH
O'Connell, Reece November 30, 2023 GPEN
O'Connell, Reece April 30, 2021 GCIH
O'Connor, Barry January 31, 2023 GCIH
O'Connor, Dan August 31, 2019 GWAPT
O'Connor, Dan January 31, 2022 GPEN
O'Connor, Dan September 30, 2021 GXPN
O'Connor, Dan July 31, 2022 GMOB
O'Connor, Dan October 31, 2022 GCIH
O'Connor, Ryan November 30, 2019 GCIH
O'Connor, Walter April 30, 2021 GCIH
O'Daniel, Patrick May 31, 2020 GCIH
O'Dea, Sean June 30, 2019 GPEN
O'Dell, Ian December 31, 2021 GPEN
O'Donnell, Chris June 30, 2021 GCIH
O'Donnell, Kelly September 30, 2022 GPEN
O'Donnell, Kelly May 31, 2020 GWAPT
O'Donnell, Kelly May 31, 2019 GMOB
O'Donnell, Kelly December 31, 2019 GCIH
O'Donnell, Sean November 30, 2020 GCIH
O'Dowd, Dennis May 31, 2019 GPEN
O'Driscoll, Conor March 31, 2023 GCIH
O'Gara, Edward February 28, 2023 GXPN
O'Gara, Mick March 31, 2021 GCIH
O'Grady, Ryan July 31, 2021 GCIH
O'Halloran, Chris April 30, 2022 GCIH
O'Halloran, Sean May 31, 2019 GCIH
O'Hara, Brian July 31, 2022 GCIH
O'Hare, Ryan November 30, 2022 GPEN
O'Jester, Aiden May 31, 2021 GPEN
O'Keefe, Thomas November 30, 2022 GCIH
O'Leary, Chad October 31, 2019 GCIH
O'Leary, Stephen August 31, 2021 GCIH
O'Malia, Casey July 31, 2021 GCIH
O'Malley, Allyson November 30, 2022 GMOB
O'Murphy, Pierrick November 30, 2022 GPEN
O'Neil, Eugene December 31, 2021 GCIH
O'Neill, Leon August 31, 2021 GCIH
O'Neill, Michael December 31, 2021 GCIH
O'Neill, Thomas November 30, 2019 GCIH
O'Neill, Tobias March 31, 2021 GCIH
O'Reilly, Martin October 31, 2022 GCIH
O'Reilly, Stephen March 31, 2020 GPEN
O'Reilly, Stephen September 30, 2019 GCIH
O'Rouke, Matthew July 31, 2022 GWAPT
O'Rouke, Matthew February 28, 2023 GXPN
O'Rouke, Matthew January 31, 2022 GPEN
O'Rouke, Matthew November 30, 2022 GCIH
O'Sullivan, Christopher July 31, 2019 GPEN
O'Sullivan, John March 31, 2021 GCIH
O'Sullivan, Simon December 31, 2021 GPEN
O'Toole, Devon April 30, 2021 GCIH
Oakes, Nathan January 31, 2023 GPEN
Oakes, Nathan January 31, 2023 GPEN
Oakes, Nathan November 30, 2019 GCIH
Oakes, Nathan November 30, 2019 GCIH
Oakes, Tony January 31, 2021 GCIH
Oakes, Tony January 31, 2021 GCIH
Obaied, Abdullah November 30, 2022 GMOB
Obebe, Tolani July 31, 2022 GCIH
Oberender, Hannes January 31, 2021 GXPN
Oberholtzer, Patricia May 31, 2021 GPEN
Oberholtzer, Patricia December 31, 2020 GCIH
Oberle, David January 31, 2021 GCIH
Oberlin, Craig August 31, 2022 GXPN
Oberlin, Craig January 31, 2022 GPEN
Oberlin, Craig July 31, 2020 GCIH
Oberndorfer, Nicholas March 31, 2023 GCIH
Oberoi, Jatinder Singh March 31, 2021 GPEN
Oblander, Derek June 30, 2022 GCIH
Obradovic, Mihailo May 31, 2021 GPEN
Obradovic, Mihailo April 30, 2021 GCIH
Obregon, Luciana September 30, 2021 GWAPT
Obregon, Luciana August 31, 2020 GPEN
Obregon, Luciana February 29, 2020 GCIH
OBrien, K.C. July 31, 2019 GPEN
OBrien, K.C. May 31, 2020 GCIH
OBrien, Keith August 31, 2022 GCIH
OBrion, Tom December 31, 2019 GCIH
Obrucnik, Dusan November 30, 2020 GWAPT
Obudulu, Okey January 31, 2020 GCIH
Ocampo, Lorenzo June 30, 2022 GCIH
Ocegueda, Luis September 30, 2020 GWAPT
Ochiltree, Donnie January 31, 2023 GCIH
Ocker, Gerald February 28, 2022 GCIH
OConnor, Matthew July 31, 2022 GWAPT
OConnor, Matthew July 31, 2022 GWAPT
OConnor, Terrence GSE GXPN
OConnor, Terrence GSE GWAPT
OConnor, Terrence GSE GPEN
OConnor, Terrence GSE GCIH
Odashima, Jun February 28, 2022 GMOB
Odegaard, Kjetil February 28, 2021 GWAPT
Odegard, Jeff November 30, 2022 GXPN
ODell, Jason October 31, 2022 GPEN
ODell, Jason January 31, 2022 GMOB
ODell, Jason July 31, 2021 GCIH
Oden, Jeffrey April 30, 2019 GPEN
Odenthal, Alexander August 31, 2022 GCIH
Odesola, Michael January 31, 2023 GCIH
Odom, Emily June 30, 2019 GWAPT
Odya, Dustin March 31, 2019 GWAPT
Odza, David December 31, 2021 GCIH
Oechsner, Edward December 31, 2022 GPYC
Oepen, Dominik September 30, 2021 GXPN
Oertel, Aaron October 31, 2021 GPEN
Oertel, Aaron October 31, 2021 GCIH
Oestreicher, Harry November 30, 2019 GWAPT
Oezdemir, Mehmet Akif November 30, 2021 GCIH
Ofarril, Rogelio February 28, 2022 GCIH
Offenberg, Joel November 30, 2022 GWAPT
Offutt, David February 28, 2022 GCIH
Offutt, Steven February 28, 2022 GCIH
Ofiaza, Richard April 30, 2023 GCIH
Ofosu-Asante, Julius April 30, 2019 GCIH
Ofulume, Gozie November 30, 2022 GPEN
Ofulume, Gozie April 30, 2022 GCIH
Ogasa, Takaharu November 30, 2019 GPEN
Ogasa, Takaharu March 31, 2023 GWAPT
Ogasa, Takaharu July 31, 2022 GCIH
Ogata, Nathan May 31, 2021 GPEN
Ogawa, Derek July 31, 2022 GPEN
Ogawa, Derek January 31, 2022 GAWN
Ogbonna, Uzoma Chigozie October 31, 2019 GCIH
Ogden, Chris April 30, 2020 GCIH
Ogden, Daniel May 31, 2019 GCIH
Ogden, Graham January 31, 2023 GCIH
Ogden, Harold December 31, 2022 GPEN
Ogden, Harold June 30, 2019 GCIH
Ogletree, Corey July 31, 2020 GCIH
Ogletree, Sean March 31, 2019 GCIH
Ogorzelski, Marcin May 31, 2022 GXPN
Ogresovich, Jason August 31, 2020 GCIH
Ogunde, Nicholas March 31, 2023 GCIH
Ogunde, Nicholas March 31, 2022 GMOB
Ogundimu, Akintola March 31, 2021 GCIH
Ogunyanwo, Olugbenga January 31, 2021 GCIH
Ogura, Tomohiro July 31, 2022 GCIH
Oh, Chee Yong, Zack January 31, 2022 GXPN
Oh, Jun Hui March 31, 2021 GCIH
Ohana, Donny November 30, 2023 GCIH
Ohana, Donny November 30, 2023 GCIH
Ohayon, Julien May 31, 2019 GXPN
Ohlsson, Mattias September 30, 2021 GPEN
Ohmer, Joshua October 31, 2019 GCIH
Ohriner, Kelly November 30, 2020 GMOB
Ohrman, Ken April 30, 2019 GPEN
Ohumay, Stephen September 30, 2021 GPEN
Oikarinen, Anne June 30, 2022 GMOB
Oishi, Reid August 31, 2021 GCIH
Oister, William June 30, 2022 GCIH
Ojaluoma, Juha October 31, 2022 GXPN
Ojaluoma, Juha January 31, 2023 GPYC
Oka, Hirofumi March 31, 2020 GWAPT
Okazaki, Yuuta March 31, 2022 GCIH
Okhovat, Duran February 28, 2022 GPEN
Okinczyc, Jeannette June 30, 2022 GPYC
Okinczyc, Jeannette December 31, 2020 GCIH
Okokon, Akam July 31, 2021 GCIH
Okonski, Tony June 30, 2022 GCIH
Oksanen, Scott June 30, 2019 GXPN
Oktavianto, Digit July 31, 2021 GCIH
Okuhara, Takahiro May 31, 2019 GWAPT
Okumura, Teppei January 31, 2023 GCIH
Okunseinde, Oluwole April 30, 2022 GXPN
Okunseinde, Oluwole April 30, 2020 GMOB
Olachea, Jeremy July 31, 2021 GCIH
Olagne, Quentin August 31, 2020 GXPN
Olagne, Quentin May 31, 2020 GMOB
Olague, Ruben April 30, 2022 GCIH
Olatunji, Olatunde June 30, 2022 GCIH
Olaya Acosta, Jose August 31, 2022 GWAPT
Olaya Acosta, Jose August 31, 2021 GPEN
Oldenburg, Christopher January 31, 2023 GPEN
Oldenburg, Christopher April 30, 2019 GWAPT
Oldenburg, Christopher July 31, 2022 GCIH
Oldright, Michael April 30, 2020 GCIH
Oldrup, Peter July 31, 2022 GAWN
Oles, Nicholas January 31, 2022 GPEN
Olesen, Jan February 28, 2021 GPEN
Olipane, Robert J. May 31, 2019 GCIH
Oliva, Brian June 30, 2021 GWAPT
Oliva, Brian April 30, 2023 GCIH
Oliver, Brian June 30, 2022 GCIH
Oliver, Chad September 30, 2020 GCIH
Oliver, Kimberly May 31, 2019 GCIH
Oliver, Ryan April 30, 2020 GWAPT
Oliver, Walt April 30, 2021 GCIH
Olivier, Medoc April 30, 2021 GXPN
Olivier, Medoc March 31, 2022 GMOB
Olivier, Medoc March 31, 2022 GAWN
Olivier, Steven March 31, 2022 GCIH
Olivo, Gregory October 31, 2022 GPEN
Olivo, Gregory July 31, 2022 GCIH
Olman, Laura June 30, 2022 GCIH
Olmstead, Frank January 31, 2020 GCIH
Olmsted, Salina July 31, 2021 GCIH
Olsen, Jarrid September 30, 2021 GCIH
Olsen, Marianne August 31, 2021 GMOB
Olsen, Nate January 31, 2023 GCIH
Olsen, Oyvind Hollup February 29, 2020 GPEN
Olsen, Oyvind Hollup March 31, 2021 GCIH
Olsen, Xena December 31, 2021 GCIH
Olson, Bradly April 30, 2022 GPEN
Olson, Cera February 29, 2020 GPEN
Olson, Christopher May 31, 2021 GPEN
Olson, Craig January 31, 2023 GPEN
Olson, Karl April 30, 2020 GPYC
Olson, Larry June 30, 2020 GPYC
Olson, Larry June 30, 2020 GPYC
Olson, Nathan March 31, 2022 GPEN
Olson, Nathan July 31, 2022 GPYC
Olson, Paul November 30, 2022 GCIH
Olson, Steven June 30, 2020 GWAPT
Olson, Trevor June 30, 2022 GCIH
Olsson, Niclas April 30, 2021 GPEN
Olsson, Niclas September 30, 2021 GCIH
Olszewski, Lukasz March 31, 2023 GCIH
Oltman, Leon July 31, 2019 GMOB
Olusola, Opeoluwa July 31, 2022 GCIH
OMalley, Jim August 31, 2019 GAWN
OMalley, Jim June 30, 2022 GCIH
Oman, Andrew April 30, 2019 GMOB
Oman, Idris August 31, 2020 GCIH
Omani, Duncan August 31, 2022 GCIH
Omar, Moustafa June 30, 2020 GPEN
OMara, Jacob March 31, 2019 GCIH
Omran, Bardia January 31, 2023 GCIH
Omura, Fred May 31, 2019 GXPN
Omuralieva, Nazira December 31, 2020 GPEN
Omuralieva, Nazira December 31, 2021 GCIH
Ondercin, Paul July 31, 2020 GCIH
Onderka, Jakub December 31, 2021 GPYC
Onderka, Jakub April 30, 2021 GCIH
ONeal, Jonathan March 31, 2022 GWAPT
ONeal, Jonathan March 31, 2022 GCIH
Oneil, Carlos April 30, 2019 GWAPT
Oneil, Carlos November 30, 2021 GCIH
ONeill, Scott April 30, 2020 GCIH
ONeill, Scott April 30, 2020 GCIH
Oney, Joseph December 31, 2022 GPEN
Oney, Joseph April 30, 2022 GCIH
Ong, Hoon Jin March 31, 2022 GPEN
Ong, Hoon Jin February 28, 2023 GMOB
Ong, Jin Jie July 31, 2021 GWAPT
Ong, Jonathan July 31, 2019 GCIH
Ong, Leonard September 30, 2020 GCIH
Ongenae, Tony July 31, 2019 GCIH
Ongera, James December 31, 2021 GPEN
Oni, Tunde August 31, 2022 GWAPT
Oni, Tunde August 31, 2021 GPEN
Onken, Skyler October 31, 2019 GXPN
Onochie, Ugo April 30, 2021 GCIH
Onofri, Donato June 30, 2021 GWAPT
Onofri, Donato August 31, 2021 GXPN
Onofri, Simone August 31, 2021 GWAPT
Onofri, Simone August 31, 2021 GXPN
Onozawa, Reo February 28, 2022 GWAPT
Onstad, Tony December 31, 2019 GCIH
Onuma, Yohei May 31, 2022 GCIH
Onyeabo, Ugo June 30, 2022 GPEN
Oo, Soe Pyae June 30, 2021 GCIH
Ooi, Eric August 31, 2021 GCIH
Ookami, Shinya July 31, 2022 GWAPT
Ookami, Shinya March 31, 2022 GCIH
Oosthoek, Kris August 31, 2021 GXPN
Oostveen, Ron August 31, 2020 GWAPT
Oostveen, Ron February 28, 2023 GXPN
Opacity, Michael September 30, 2022 GPEN
Opacity, Michael January 31, 2024 GCIH
Opatrny, Justin July 31, 2021 GPEN
Opdam, Jochem December 31, 2022 GPEN
Opdyke, Eric August 31, 2022 GCIH
Opel, Benjamin October 31, 2019 GCIH
Opel, Benjamin April 30, 2021 GMOB
Opiyo, Faith July 31, 2022 GCIH
Oprea, Liviu Dan April 30, 2019 GPEN
Oprea, Liviu Dan April 30, 2019 GXPN
Oprea, Mihaita Gabriel October 31, 2022 GCIH
Oprisiu, Ioan July 31, 2021 GCIH
Oray, David April 30, 2022 GPEN
Orban, Ciprian December 31, 2019 GPEN
Orban, Ciprian January 31, 2021 GCIH
Orchilles, Jorge August 31, 2023 GPEN
Orchilles, Jorge August 31, 2020 GXPN
Orchilles, Jorge April 30, 2022 GCIH
Oreilly, Aaron November 30, 2021 GCIH
Orem, Martin March 31, 2021 GXPN
Orizu, Chidozie November 30, 2020 GCIH
Orlando, Nick December 31, 2021 GWAPT
Orlovsky, Keith November 30, 2020 GPEN
Orlovsky, Keith August 31, 2021 GMOB
Ormerod, Christopher June 30, 2022 GCIH
Ormes, Eric May 31, 2021 GPEN
Ormes, Eric January 31, 2023 GCIH
Ormond, Ryan August 31, 2019 GPEN
Ormond, Ryan April 30, 2019 GCIH
Orozco, Ana June 30, 2020 GCIH
Orr, Frankie June 30, 2021 GPEN
Orr, Frankie March 31, 2021 GCIH
Orr, Joshua March 31, 2023 GWAPT
Orr, Joshua March 31, 2020 GPEN
Orr, Joshua July 31, 2019 GCIH
Orr, Michael December 31, 2019 GCIH
Orrender, Jeffrey December 31, 2019 GCIH
Orrvick, Dan August 31, 2020 GPEN
Orrvick, Dan September 30, 2021 GWAPT
Orrvick, Dan February 28, 2022 GCIH
Ortega, Gael June 30, 2022 GCIH
Ortega, Juan June 30, 2022 GPEN
Ortiz, Andres March 31, 2023 GCIH
Ortiz, Billy February 28, 2023 GPEN
Ortiz, Billy January 31, 2023 GCIH
Ortiz, John February 29, 2020 GCIH
Ortiz, Jose GSE GPEN
Ortiz, Jose GSE GCIH
Ortiz, Kimberly March 31, 2023 GPEN
Ortiz, Matthew March 31, 2020 GPEN
Ortiz, Omar December 31, 2020 GPEN
Ortiz, Omar February 28, 2023 GCIH
Ortiz, Ramon February 28, 2022 GPEN
Ortiz Barron, Hector October 31, 2022 GPEN
Ortiz Barron, Hector September 30, 2022 GXPN
Ortiz Barron, Hector March 31, 2023 GCIH
Ortlieb, Mike July 31, 2022 GPEN
Ortlieb, Mike August 31, 2019 GWAPT
Orumwense, Osarumwense March 31, 2023 GCIH
Orwig, Kenneth January 31, 2024 GCIH
Orye, Erwin September 30, 2020 GCIH
Osborn, Mark July 31, 2021 GPYC
Osborne, Daniel January 31, 2023 GCIH
Osborne, Frank July 31, 2020 GWAPT
Osborne, George March 31, 2020 GPEN
Osborne, George August 31, 2022 GXPN
Osborne, George October 31, 2019 GCIH
Oser, Patrick September 30, 2019 GPEN
Oser, Patrick August 31, 2021 GCIH
Osifo, Osasere April 30, 2022 GPEN
Osinski, Stephen M. September 30, 2022 GCIH
Osman, Yansen April 30, 2023 GWAPT
Osmus, Eric January 31, 2023 GPEN
Osmus, Eric October 31, 2023 GCIH
Ostap, Hubert April 30, 2022 GPEN
Ostapenko, Anna November 30, 2020 GCIH
Osten, Darren February 29, 2020 GWAPT
Oster, Roman April 30, 2022 GPEN
Osterhout, Megan November 30, 2021 GCIH
Ostering, Albert December 31, 2021 GCIH
Osterman, Kurt July 31, 2022 GCIH
Osthoff, Conor December 31, 2022 GMOB
Osti, Andrew July 31, 2021 GCIH
Ostiadal, Ionut-Sorin January 31, 2021 GCIH
Ostmo, Vidar July 31, 2023 GCIH
Ostrander, Christopher May 31, 2021 GCIH
Ostrander, Steven May 31, 2022 GWAPT
Ostrander, Steven October 31, 2022 GPEN
Ostrander, Steven January 31, 2022 GMOB
Ostrander, Steven January 31, 2021 GAWN
Ostrander, Steven July 31, 2021 GCIH
Ostrom, Jason July 31, 2022 GPEN
Ostrom, Jason June 30, 2022 GWAPT
Ostrom, Jason December 31, 2021 GCIH
Ostrowski, Paul March 31, 2020 GCIH
Osunji, Olatunji January 31, 2023 GCIH
Otero-Ostalaza, Roque R. September 30, 2021 GCIH
Otis, Lynn August 31, 2019 GCIH
Otis, Storm September 30, 2019 GWAPT
Oto, Shigeaki March 31, 2020 GWAPT
Oto, Shigeaki November 30, 2020 GPEN
Ottaway, Alan August 31, 2020 GCIH
Ottenbacher, Levi A. April 30, 2019 GCIH
Otto, Jonathan February 28, 2023 GCIH
Otto, Steffen June 30, 2021 GPEN
Oudhof, Andre October 31, 2020 GWAPT
Oudhof, Andre May 31, 2022 GXPN
Ouellette, Daniel March 31, 2019 GPEN
Ouellette, John September 30, 2022 GPYC
Ousley, Martin May 31, 2020 GPYC
Outten, Stephen April 30, 2020 GCIH
Outtrim, Marshall May 31, 2021 GCIH
Overall, Brandon February 29, 2020 GPEN
Overbaugh, John September 30, 2020 GWAPT
Overbaugh, John January 31, 2022 GMOB
Overbaugh, John August 31, 2021 GCIH
Overby, Newton February 28, 2021 GPEN
Overby, Vince November 30, 2021 GCIH
Overhoff, Mike December 31, 2021 GCIH
Owen, Chadd October 31, 2021 GCIH
Owen, Daniel January 31, 2021 GPEN
Owen, Daniel August 31, 2020 GCIH
Owen, Daniel July 31, 2023 GAWN
Owen, Daniel February 28, 2023 GCIH
Owen, Daniel September 30, 2020 GCIH
Owen, Greg April 30, 2021 GPEN
Owen, Greg April 30, 2022 GWAPT
Owen, Rod March 31, 2022 GWAPT
Owen, Rod September 30, 2019 GCIH
Owen, Rod October 31, 2021 GPEN
Owen, Rod February 29, 2020 GAWN
Owens, Christopher February 28, 2022 GPEN
Owens, Matthew July 31, 2019 GCIH
Owzarski, Jessica July 31, 2020 GCIH
Oya, Masatsugu June 30, 2022 GPEN
Oyarijivbie, Esha January 31, 2023 GCIH
Ozaki, Mitsuyoshi June 30, 2020 GPEN
Ozawa, Fumio October 31, 2022 GXPN
Ozkaya, Seref December 31, 2022 GPEN
Ozlanski, Anthony March 31, 2020 GPEN
Ozlanski, Anthony July 31, 2020 GWAPT
Ozmen, Bekir August 31, 2019 GMOB
Ozoya, Tosin March 31, 2023 GPEN
Ozoya, Tosin June 30, 2022 GMOB
Ozturk, Gunce November 30, 2022 GCIH
Ozturkci, Halil May 31, 2019 GPEN
O\'Brien, Jonathan March 31, 2023 GXPN