ABDUL-RAHMAN A, 1997, P IEEE INT C COMM MA;ANAND SS, 2007, ACM T INTERNET TECHN, V7, DOI 10.1145/1278366.1278367, 10.1145/1278366.1278371;APPELT W, WHAT GROUPWARE FUNCT, P337;BERNTHAL P., 1997, SURVEY TRUST WORKPLA;BORCEA K., 2005, P WORLD C ED MULT HY, P1466;CABALLE S, 2005, LECT NOTES COMPUT SC, V3762, P274;CABALLE S, 2013, CLUSTER COMPUT, V16, P829, DOI 10.1007/S10586-013-0256-9;CABALLE S, 2008, FUTURE LEARN, V2, P173;CIESIELSKI V, 2003, FR ART INT, V104, P1034;CSO MAGAZINE US SECRET SERVICE SOFTWARE ENGINEERING INSISTUTE CERT PROGRAM AT CARNEGIE MELLON UNIVERSITY DELOITTE, 2011, CSO MAGAZINE;DAI CY, 2008, LECT NOTES COMPUT SC, V5159, P82;DEMOTT JD, 2011, GRAY HAT HACKING;DILLENBOURG P., 1999, COLLABORATIVE LEARNI, P1;EIBL C. J., 2010, DISCUSSION INFORM SE;EIBL CJ, 2009, 2009 FOURTH INTERNATIONAL CONFERENCE ON INTERNET AND WEB APPLICATIONS AND SERVICES, P638, DOI 10.1109/ICIW.2009.102;FERENCZ SK, 1998, CAUSE EFFECT PRACTIT, V21, P5;KAMBOURAKIS G, 2007, COMPUT EDUC, V48, P1, DOI 10.1016/J.COMPEDU.2004.10.017;KOSCHMANN T., 1996, CSCL THEORY PRACTICE, P1;MIGUEL JORGE, 2013, 2013 5TH INTERNATIONAL CONFERENCE ON INTELLIGENT NETWORKING AND COLLABORATIVE SYSTEMS, P289, DOI 10.1109/INCOS.2013.52;MIGUEL J., 2012, P 4 IEEE INT C INT N, P97, DOI 10.1109/INCOS.2012.60;MIGUEL J., 2012, ELEARNING PAPERS;MIGUEL J, 2013, 2013 SEVENTH INTERNATIONAL CONFERENCE ON COMPLEX, INTELLIGENT, AND SOFTWARE INTENSIVE SYSTEMS (CISIS), P379, DOI 10.1109/CISIS.2013.69;PAPPANO L., 2012, NEW YORK TIMES;RAY I, 2004, LECT NOTES COMPUT SC, V3193, P260;SALFNER F., 2004, PROCEEDINGS. 18TH INTERNATIONAL PARALLEL AND DISTRIBUTED PROCESSING SYMPOSIUM;SAYALEE N., 2013, INT J UBICOMP, V4, P41, DOI 10.5121/IJU.2013.4304, DOI 10.5121/IJU.2013.4304;SCHNEIER B, 2008, LECT NOTES COMPUT SC, V5023, P50;THE APACHE SOFTWARE FOUNDATION, 2014, AP HTTP SERV VERS 2;TRUSTWAVE, 2012, TRUSTW 2012 GLOB SEC;WEIPPL E. R., 2005, SECURITY E LEARNING;WEIPPL ER, 2006, HDB INFORM SECURITY, V1, P279;WHITE T, 2012, HADOOP DEFINITIVE GU;XHAFA F, 2010, INT J WEB GRID SERV, V6, P124, DOI 10.1504/IJWGS.2010.033788;ZHENG WU, 2011, PROCEEDINGS OF THE 2011 INTERNATIONAL CONFERENCE ON INFORMATION TECHNOLOGY, COMPUTER ENGINEERING AND MANAGEMENT SCIENCES (ICM 2011), P26, DOI 10.1109/ICM.2011.363