Certified Professionals: GSEC

Certified Professionals:

GIAC Security Essentials

Security Professionals that want to demonstrate they are qualified for IT systems hands-on roles with respect to security tasks. Candidates are required to demonstrate an understanding of information security beyond simple terminology and concepts.

307 of 19,366 GSEC Professionals
Analyst * Name First Certified Expiration
203 O'Brien, Brennan Nov 29, 2000 Nov 30, 2006
10606 O'Brien, Christopher Aug 02, 2007 Aug 31, 2015
26323 O'Brien, Conall May 13, 2010 May 31, 2014
5771 O'Brien, Michael Sep 10, 2006 Nov 30, 2015
21148 O'Brien, Rod Jun 26, 2009 Jun 30, 2013
1924 O'Brien, Steven May 21, 2002 May 31, 2012
7211 O'Brien, Timothy Jan 08, 2007 Jan 31, 2011
4860 O'Brien, Timothy Jan 04, 2006 Jan 31, 2010
11976 O'Connor, Kevin Oct 20, 2007 Oct 31, 2011
19049 O'Connor-Ebert, Eve Feb 17, 2009 Feb 28, 2013
3974 O'Donnell, Mark Aug 09, 2004 Aug 31, 2008
27168 O'Driscoll, Danny Jun 29, 2010 Jun 30, 2014
2252 O'Hara, Paul Nov 02, 2002 Nov 30, 2006
2955 O'Neil, Paul Jun 29, 2003 Jun 30, 2009
1164 O'Neil, Timothy Sep 28, 2001 Sep 30, 2005
2370 O'Neill, David Dec 17, 2002 Dec 31, 2006
3134 O'Neill, Lawrence Aug 28, 2003 Aug 31, 2007
1136 O'Neill, Michael Sep 20, 2001 Sep 30, 2007
3124 O'Neill, Warren Aug 18, 2003 Jul 31, 2011
7206 O'Such, Peter Jan 08, 2007 Jan 31, 2011
16119 O'Sullivan, Gary Aug 25, 2008 Aug 31, 2012
32430 O'Sullivan, Marcus A. Jan 25, 2012 Jan 31, 2016
4258 O'Toole, Denis Feb 17, 2005 Feb 28, 2009
36113 O'Brien, Christopher Dec 03, 2014 Jan 31, 2020
35573 O'Brien, James Jul 29, 2014 Jul 31, 2018
180 O'Brien, Jim Nov 20, 2000 Nov 30, 2019
37728 O'Brien, Sean Oct 29, 2015 Oct 31, 2019
39475 O'Brien, Thomas Sep 22, 2016 Sep 30, 2020
31932 O'callaghan, Gemma Aug 10, 2011 Aug 31, 2015
35771 O'Connor, Ryan Sep 15, 2014 Sep 30, 2018
38408 O'Daniel, Patrick Mar 18, 2016 Mar 31, 2020
32335 O'Dell, Ian Dec 12, 2011 Dec 31, 2019
39509 O'Donnell Marks, Sarena Sep 28, 2016 Sep 30, 2020
39568 O'Flaherty, Ryan Oct 10, 2016 Oct 31, 2020
35457 O'Grady, Kevin Jul 10, 2014 Jul 31, 2018
34804 O'Hare, Mark Jan 31, 2014 Jan 31, 2018
31651 O'Loughlin, Natasha Apr 16, 2011 Apr 30, 2015
33030 O'Malia, Casey Aug 17, 2012 Aug 31, 2016
37605 O'Malley, Jennifer Sep 29, 2015 Sep 30, 2019
36211 O'Neal, Nathan Dec 22, 2014 Dec 31, 2018
35345 O'Neil, Eugene Jun 06, 2014 Jun 30, 2018
38801 O'Neil, Nick May 27, 2016 May 31, 2020
36609 O'Neill, Leon Mar 19, 2015 Mar 31, 2019
15689 O'Regan, Mark Aug 06, 2008 Aug 31, 2012
5250 O'Reilly, Martin Apr 21, 2006 Apr 30, 2018
38349 O'Reilly, Sean Mar 04, 2016 Mar 31, 2020
36745 O'Reilly, Stephen Apr 10, 2015 Apr 30, 2019
21593 O'Riley, Carrie Jul 27, 2009 Jul 31, 2013
27708 O'Riordan, John Jul 29, 2010 Jul 31, 2014
35595 O'Rourke, Liam Aug 06, 2014 Aug 31, 2018
32461 O'Shannessy, Liam Feb 01, 2012 Feb 29, 2016
26123 O'Shea, Edward Apr 30, 2010 Apr 30, 2018
37837 O'Shea, Gareth Nov 20, 2015 Nov 30, 2019
36103 O'Shea, John Nov 28, 2014 Nov 30, 2018
3218 O'Shea, Kevin Sep 25, 2003 Feb 28, 2017
37784 O'Sheaf, Jeffrey Nov 10, 2015 Nov 30, 2019
37254 O'Sullivan, William Jul 27, 2015 Jul 31, 2019
12386 O'Toole, Patrick Nov 21, 2007 Nov 30, 2015
39451 Oakes, Joseph A. Sep 19, 2016 Sep 30, 2020
3476 Oakley, Jeff Jan 15, 2004 Jan 31, 2008
35972 Oberholtzer, Patricia Oct 30, 2014 Oct 31, 2018
38610 Oberlin, Craig Apr 20, 2016 Apr 30, 2020
8536 Oberly, Eric Mar 31, 2007 Mar 31, 2011
465 Obert, Jack Mar 05, 2001 Mar 31, 2005
35232 Oblander, Derek May 06, 2014 May 31, 2018
37212 Obregon, Luciana Jul 22, 2015 Jul 31, 2019
4778 OBrien, Wesley Oct 15, 2005 Oct 31, 2009
28678 Obuchowski, Andrew Sep 22, 2010 Sep 30, 2014
18333 Ochart, Robert Jan 09, 2009 Jan 31, 2013
37283 Ochmanski, Mark Aug 04, 2015 Aug 31, 2019
24869 Ochoa, Jomarie Feb 08, 2010 Feb 28, 2014
5161 Ochs, Letha Mar 26, 2006 Mar 31, 2010
4963 Ockwell-Jenner, Dave Jan 02, 2006 Jan 31, 2010
26698 OConnor, Terrence Jun 03, 2010 Mar 31, 2019
14023 Odah, Nawwaf Mar 17, 2008 Mar 31, 2012
3165 Oddo, Robert Sep 09, 2003 Sep 30, 2007
30264 Odom, Emily Jan 18, 2011 Jan 31, 2015
4410 Odom, Jessica May 08, 2005 May 31, 2013
35730 Odom, Kathleen Sep 08, 2014 Sep 30, 2018
3548 ODorisio, Daniel Feb 03, 2004 Feb 29, 2008
36166 Oechsner, Edward Dec 11, 2014 Dec 31, 2018
34134 Oehlert, Sam Aug 01, 2013 Aug 31, 2017
8146 Oehlrich, Bill Mar 04, 2007 Mar 31, 2015
17743 Oeschger, Patrick Dec 02, 2008 Dec 31, 2012
34999 Oesterle, Robyn Mar 11, 2014 Mar 31, 2018
34477 Oestmann, Ryan Nov 04, 2013 Nov 30, 2017
2903 Oeverby, Thorstein Jun 06, 2003 Jun 30, 2007
32218 Offenberg, Joel Oct 20, 2011 Oct 31, 2019
5468 Ofrim, Ovidiu Jul 16, 2006 Jul 31, 2010
32999 Ogawa, Takashi Aug 09, 2012 Aug 31, 2016
14273 Ogbaselassie, Yonas Mar 27, 2008 Mar 31, 2012
35456 Ogden, Daniel Jul 10, 2014 Jul 31, 2018
7996 Ogletree, Herman Feb 22, 2007 Feb 28, 2011
23834 Ogletree, Sean Dec 08, 2009 Dec 31, 2013
39595 Ogunyanwo, Olugbenga Oct 15, 2016 Oct 31, 2020
36518 Oh, Richard Mar 04, 2015 Mar 31, 2019
16838 OHare, Brian Oct 04, 2008 Oct 31, 2012
32039 Ohki, Yasunori Jun 07, 2007 Jun 30, 2011
15588 Ohmer, Craig Aug 01, 2008 Aug 31, 2012
13553 Ohrt, Jonathan Feb 13, 2008 Feb 29, 2012
25983 Ohtani, Yoshihiro Mar 28, 2010 Mar 31, 2014
15638 Oikonomopoulos, Nassos (Athanasios) Jul 23, 2004 Jul 31, 2016
5380 Ojha, Sudhir Jun 15, 2006 Jun 30, 2010
6526 Ojo, Daniel Dec 12, 2006 Dec 31, 2010
19037 Okada, Michimori Feb 08, 2009 Feb 28, 2013
20048 Okao, Geoffrey May 06, 2009 May 31, 2013
16574 Okhandiar, Ragini Sep 23, 2008 Sep 30, 2012
29947 Oki, Hiroyuki Sep 26, 2010 Sep 30, 2014
5549 Okinaga, Scott Jul 31, 2006 Jul 31, 2010
17587 Okitsu, Naoki Nov 16, 2008 Nov 30, 2012
3138 Okorn, Pavel Aug 29, 2003 Aug 31, 2007
32656 Oksavuori, Ari-Pekka Apr 05, 2012 Apr 30, 2020
21123 Okten, Deniz Jun 29, 2009 Jun 30, 2013
12127 Okubanjo, Yemi Nov 08, 2007 Nov 30, 2011
14157 Okuda, Shinya Mar 09, 2008 Mar 31, 2012
36544 Okuno, David Mar 06, 2015 Mar 31, 2019
1418 Oleary, Chad Dec 20, 2001 Dec 31, 2005
36803 OLeary, Jacqueline Apr 23, 2015 Apr 30, 2019
34467 Olenick, Mark Oct 31, 2013 Oct 31, 2017
7621 Olijnyk, John Jan 30, 2007 Jan 31, 2011
5183 Oliveira, Armando Mar 31, 2006 Mar 31, 2010
35226 Oliver, Brian May 06, 2014 May 31, 2018
32939 Oliver, Chad Jul 20, 2012 Jul 31, 2016
38204 Oliver, Levander Feb 05, 2016 Feb 29, 2020
1693 Oliver, Thomas Mar 26, 2002 Mar 31, 2006
36384 Oliver, Walt Feb 05, 2015 Feb 28, 2019
34798 Olivo, Gregory Jan 29, 2014 Jan 31, 2018
2988 Olkowski, David Apr 11, 2001 Jul 31, 2011
4119 Olla, Nathan Oct 26, 2004 Oct 31, 2008
4025 Olney, Matthew Sep 10, 2004 Sep 30, 2008
37085 Olsen, Bryan Jun 19, 2015 Jun 30, 2019
3471 Olsen, Camilla Jan 15, 2004 Jan 31, 2008
4254 Olsen, David Feb 11, 2005 Feb 28, 2009
37609 Olsen, Gregory Lee Sep 29, 2015 Sep 30, 2019
32320 Olsen, Mark Dec 05, 2011 Dec 31, 2019
31704 Olsen, Oyvind Hollup May 04, 2011 May 31, 2019
16564 Olsen, Richard Sep 22, 2008 Sep 30, 2012
13239 Olsen, Stephan Jan 25, 2008 Jan 31, 2012
3308 Olson, Bill Oct 07, 2003 Oct 31, 2007
3818 Olson, Bob Apr 20, 2004 Apr 30, 2008
38921 Olson, Brian Jun 22, 2016 Jun 30, 2020
2359 Olson, Derek Dec 12, 2002 Dec 31, 2012
5381 Olson, Geri Jun 15, 2006 Jun 30, 2010
35379 Olson, Kristin Jun 18, 2014 Jun 30, 2018
36920 Olson, Philip May 22, 2015 May 31, 2019
2688 Olson, William Apr 06, 2003 Apr 30, 2007
3237 Olsson, Tricia Sep 28, 2003 Jun 30, 2011
471 Olusada, Cheryl Mar 05, 2001 Mar 31, 2007
1770 Omar, Ahmad Apr 08, 2002 Apr 30, 2006
38029 Ombredane, Aurore Jan 08, 2016 Jan 31, 2020
3021 Ombrellaro, Anthony Jul 18, 2003 Jul 31, 2007
33979 Omura, Fred Jun 06, 2013 Jun 30, 2017
8656 Omuralieva, Nazira Apr 12, 2007 Apr 30, 2019
39426 Ondic, Kevin Sep 15, 2016 Sep 30, 2020
32332 ONeal, Jonathan Dec 08, 2011 Dec 31, 2019
32522 ONeill, Scott Feb 21, 2012 Feb 29, 2016
35839 Ong, August Sep 26, 2014 Sep 30, 2018
30788 Ong, Chyn Kok Feb 25, 2011 Feb 28, 2015
38276 Ong, Gary Kok How Feb 22, 2016 Feb 29, 2020
38322 Ong, Hoon Jin Feb 29, 2016 Feb 29, 2020
16889 Ong, Kar Poh Oct 10, 2008 Oct 31, 2012
800 Ong, Yaowe Jun 18, 2001 Jun 30, 2007
30044 Ongko Sanjaya, Suwandi Dec 21, 2010 Dec 31, 2014
8031 Onken, Roger Feb 22, 2007 May 31, 2016
39399 Onochie, Ugo Sep 08, 2016 Sep 30, 2020
32159 Onstad, Katherine L. Oct 01, 2011 Oct 31, 2015
5569 Ooi, Hui Ying Aug 04, 2006 Aug 31, 2010
29412 Ookami, Shinya Oct 24, 2010 Oct 31, 2014
38342 Oolmann, Christel Mar 03, 2016 Mar 31, 2020
35446 Oosterwijk, Michiel Jul 08, 2014 Jul 31, 2018
35048 Oostveen, Ron Mar 21, 2014 Mar 31, 2018
31772 Ootsu, Yuuki Oct 24, 2010 Oct 31, 2014
34920 Opacity, Michael Feb 28, 2014 Feb 28, 2018
317 Opaska, Walter Dec 20, 2000 Dec 31, 2004
24377 Openshaw, Jason Jan 07, 2010 Jan 31, 2014
35037 Opuda, Matthew Mar 19, 2014 Mar 31, 2018
38403 Orate, Paul Mar 17, 2016 Mar 31, 2020
28063 Ordonez, Marco Aug 15, 2010 Aug 31, 2014
36606 Ordonez Alonso, Jorge Mar 19, 2015 Mar 31, 2019
141 Orebaugh, Angela Oct 11, 2000 Oct 31, 2008
34504 Oreilly, Aaron Nov 09, 2013 Nov 30, 2017
994 Orey, Douglas Aug 28, 2001 Aug 31, 2005
14264 Orezzoli, Carlos Apr 01, 2008 Apr 30, 2012
36583 Orizu, Chidozie Mar 14, 2015 Mar 31, 2019
33526 Orkin, Kevin Feb 01, 2013 Feb 28, 2017
2651 Orlando, Mark Mar 24, 2003 Mar 31, 2007
4387 Orlando, Neil Apr 22, 2005 Apr 30, 2013
3782 Orloff, Rick May 08, 2004 May 31, 2008
5434 Orme, Michael Jul 09, 2006 Jul 31, 2010
33126 Ormond, Ryan Sep 25, 2012 Sep 30, 2016
3297 Ornelas, Linda Oct 16, 2003 Oct 31, 2011
36728 Orpen, Matthew Apr 07, 2015 Apr 30, 2019
79 Orr, Chris Sep 08, 2000 Sep 30, 2004
886 Orr, Deborah Jul 24, 2001 Jul 31, 2005
33427 Orr, Frankie Dec 21, 2012 Dec 31, 2016
38175 Orsini, Andrew Feb 01, 2016 Feb 29, 2020
739 Orsini, John May 30, 2001 May 31, 2007
38434 Ort, Jason D. Mar 21, 2016 Mar 31, 2020
2509 Ortega, Adelina Feb 09, 2003 Feb 28, 2007
5085 Ortega, Hugo Feb 20, 2006 Feb 28, 2010
38841 Ortega, Manuel Jun 05, 2016 Jun 30, 2020
26548 Ortega, Paolo May 26, 2010 May 31, 2014
39488 Ortega, Paul Sep 24, 2016 Sep 30, 2020
39656 Ortego, Dillard Andre' Oct 25, 2016 Oct 31, 2020
5024 Ortego, Eric Jan 21, 2006 Jan 31, 2010
39630 Orth, Nicholas Oct 21, 2016 Oct 31, 2020
5877 Orthner, Ron Oct 01, 2006 Oct 31, 2010
37036 Ortiz, Alejandra Jun 12, 2015 Jun 30, 2019
38994 Ortiz, Billy Jun 29, 2016 Jun 30, 2020
4425 Ortiz, Jaime May 01, 2005 May 31, 2009
30904 Ortiz, James Feb 26, 2011 Feb 28, 2015
38109 Ortiz, John Jan 22, 2016 Jan 31, 2020
30049 Ortiz, Jose Dec 21, 2010 Aug 24, 2019
32914 Ortiz, Michael Jul 11, 2012 Jul 31, 2020
26543 Ortiz, Rodolfo May 26, 2010 May 31, 2014
5210 Ortiz, Ronald Apr 13, 2006 Apr 30, 2018
36035 Ortiz, Tomas Nov 13, 2014 Nov 30, 2018
12889 Ortiz Ruiz, Otoniel Manuel Sep 26, 2003 Sep 30, 2015
4665 Ortlieb, Mike Aug 16, 2005 Aug 31, 2009
8446 Ortloff, Kevin Mar 23, 2007 Mar 31, 2011
38869 Orye, Erwin Jun 13, 2016 Jun 30, 2020
36921 Osada, Shigeyuki May 23, 2015 May 31, 2019
14192 Osaka, Shinya Mar 15, 2008 Mar 31, 2012
27968 Osama Elshafey Elazazy, Ahmed Aug 10, 2010 Aug 31, 2014
25394 Osama kamar ElDawla Hamed, Mohamed Mar 04, 2010 Mar 31, 2014
7021 Osborn, Barry Jan 02, 2007 Jan 31, 2015
28558 Osborn, Brian Sep 16, 2010 Sep 30, 2014
38017 Osborn, Gina Jan 05, 2016 Jan 31, 2020
32376 Osborne, George Jan 04, 2012 Jan 31, 2020
1544 Osborne, Tia Feb 13, 2002 Feb 28, 2006
2559 Oseen, Jason Feb 23, 2003 Feb 28, 2017
31 Osen, Steven May 04, 2002 May 31, 2008
2200 Osgood, Dustin Oct 16, 2002 Oct 31, 2008
5883 Osgood, Matthew Oct 06, 2006 Oct 31, 2010
29128 Osgood, Thomas Oct 22, 2010 Oct 31, 2014
9561 Oshiro, Woodrow Jun 18, 2007 Jun 30, 2011
11036 Osiczko, Pawel Aug 20, 2007 Aug 31, 2011
4855 Osman, Hassan Nov 11, 2005 Nov 30, 2009
14008 Osmon, Shannon Mar 15, 2008 Mar 31, 2012
35306 Osoteo, Mark May 22, 2014 May 31, 2018
36990 Ossewaarde, Gary Jun 04, 2015 Jun 30, 2019
37282 Ostaszkiewicz, Michael Aug 04, 2015 Aug 31, 2019
5332 Osteen, Jerry May 24, 2006 May 31, 2010
6876 Osterholt, Jason Dec 26, 2006 Dec 31, 2010
11236 Osterman, Jamie Sep 04, 2007 Sep 30, 2011
1451 Osterman, William Jan 09, 2002 Jan 31, 2006
3183 Ostermann, Jason Sep 15, 2003 Sep 30, 2007
37010 Osti, Mario Jun 10, 2015 Jun 30, 2019
12132 Ostler, Matthew Nov 09, 2007 Nov 30, 2011
18708 Ostler, Ryan Jan 30, 2009 Jan 31, 2013
6131 Ostrognay, Michael Nov 19, 2006 Nov 30, 2010
35632 Ostrokol, Michael Aug 14, 2014 Aug 31, 2018
13319 Oswald, Steve Feb 05, 2008 Feb 29, 2012
33714 Oswalt, Chuck Mar 14, 2013 Mar 31, 2017
15762 Ota, Hitoshi Jul 13, 2008 Jul 31, 2012
1622 Otero, Sonia Mar 07, 2002 Mar 31, 2006
25347 Oto, Takahiro Feb 28, 2010 Feb 28, 2014
17572 Otsuka, Jumpei Nov 16, 2008 Nov 30, 2012
25204 Ott, James Feb 22, 2010 Feb 28, 2014
34758 Ott, Peter Jan 17, 2014 Jan 31, 2018
34396 Otteson, Ryan Oct 11, 2013 Oct 31, 2017
1504 Otto, Brian Jan 30, 2002 Jan 31, 2008
36541 Otto, Douglas Mar 06, 2015 Mar 31, 2019
5908 Otto, Michael Oct 12, 2006 Oct 31, 2014
33323 Otto, Silas Nov 28, 2012 Nov 30, 2016
5392 Oudshoorn, Paul Jun 18, 2006 Jun 30, 2010
26488 Ouellette, Heather May 24, 2010 May 31, 2018
32404 Ouellette, Patrick Jan 18, 2012 Jan 31, 2016
5260 Ouellette, Patrick Apr 28, 2006 Apr 30, 2010
19923 Ouhsain, Mohamed Apr 27, 2009 Apr 30, 2013
27683 Oum, David Jul 27, 2010 Jul 31, 2018
20433 Outt, Raymond May 28, 2009 May 31, 2013
32878 Ouwehand, Rene Jun 21, 2012 Jun 30, 2016
34353 Ovcherov, Victoria Sep 27, 2013 Sep 30, 2017
37498 Overby, Dustin Sep 11, 2015 Sep 30, 2019
336 Overhauser-Duett, Judy Dec 30, 2000 Dec 31, 2004
39449 Overton, Gregory J. Sep 19, 2016 Sep 30, 2020
37169 Overton, Jessica Jul 13, 2015 Jul 31, 2019
3145 Oviedo, Gerardo Aug 30, 2003 Aug 31, 2011
38158 Owen, Daniel Jan 28, 2016 Jan 31, 2020
1518 Owen, Daniel Feb 05, 2002 Feb 29, 2020
32701 Owen, Nia Apr 20, 2012 Apr 30, 2016
2888 Owen, Randall May 30, 2003 May 31, 2007
19629 Owen, Rod Mar 27, 2009 Mar 31, 2017
13548 Owen, Rodney Feb 13, 2008 Feb 29, 2012
30364 Owens, Christopher Jan 22, 2011 Jan 31, 2015
354 Owens, Dave Jan 15, 2001 Jan 31, 2009
5283 Owens, Fahey May 12, 2006 May 31, 2010
2857 Owens, Kevin May 23, 2003 May 31, 2009
1748 Owens, Mark Apr 05, 2002 Apr 30, 2008
36918 Owens, Matthew May 22, 2015 May 31, 2019
32687 Owens, Michael Apr 17, 2012 Apr 30, 2016
177 Owens, Rob Nov 15, 2000 Nov 30, 2004
33218 Ownsby, Elizabeth Oct 19, 2012 Oct 31, 2016
3672 Owsianski, Russ Mar 13, 2004 Mar 31, 2008
2477 Oxenhandler, Daniel Jan 30, 2003 Jan 31, 2013
23293 Oxley, David Nov 03, 2009 Nov 30, 2013
2704 Oxonian, Robert Apr 12, 2003 Apr 30, 2007
26103 Oxton, Brandon Apr 30, 2010 Apr 30, 2014
33592 Ozbenli, Hasan Huseyin Feb 16, 2013 Feb 28, 2017
1022 Ozdemir, Saffet Aug 29, 2001 Aug 31, 2007
4683 Ozeki, Yoshimi Aug 22, 2005 Aug 31, 2009
31661 Ozkan, Huseyin Burhan Apr 19, 2011 Apr 30, 2015
17028 Ozmer, Steve Oct 20, 2008 Oct 31, 2016
31744 Ozturk, Gunce May 22, 2011 May 31, 2019
35134 Ozturk, Metin Apr 09, 2014 Apr 30, 2018
32363 O\'Brien, Cyrene Dec 22, 2011 Dec 31, 2015