{"id":1682,"date":"2026-01-13T04:31:12","date_gmt":"2026-01-13T03:31:12","guid":{"rendered":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/?p=1682"},"modified":"2026-01-13T04:31:12","modified_gmt":"2026-01-13T03:31:12","slug":"seminarski-rad-15","status":"publish","type":"post","link":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/2026\/01\/13\/seminarski-rad-15\/","title":{"rendered":"Seminarski rad"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center is-style-default has-large-font-size\" style=\"font-style:normal;font-weight:700\">Ukratko o meni<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0\"><img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"1024\" src=\"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/slika-hahaha-576x1024.jpeg\" alt=\"\" class=\"wp-image-1719\" style=\"width:167px;height:auto\" srcset=\"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/slika-hahaha-576x1024.jpeg 576w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/slika-hahaha-169x300.jpeg 169w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/slika-hahaha-768x1365.jpeg 768w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/slika-hahaha-864x1536.jpeg 864w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/slika-hahaha.jpeg 900w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ja sam Stefan Amid\u017ei\u0107 zavr\u0161io sam Tehni\u010dku \u0161kolu Mihajlo Pupin, dobro poznajem engleski jezik i u\u010dim jo\u0161 jedan, ne volim sportove sa loptom, volim da sviram i slu\u0161am dobru muziku haha. <\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center is-style-default has-x-large-font-size\" style=\"line-height:1.6\">Bezbednost na internetu<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Oduvek sam voleo da surfujem internetom, prirodno sam morao da naucim kako da drzim svoje podatke bezbednim.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"naslov1-aaa\" style=\"font-size:clamp(24.034px, 1.502rem + ((1vw - 3.2px) * 1.663), 40px);\">Sigurnost u ra\u010dunarskim mre\u017eama<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.625), 20px);\">U ovom radu obradi\u0107u osvnovne pojmove u sigurnosti racunarskih mreza:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.625), 20px);\">Principe i arhitekturu bezbednosti i napada;<\/li>\n\n\n\n<li style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.625), 20px);\">Moderna re\u0161enja (<sup><a href=\"#definicije-bezbednost\" data-type=\"internal\" data-id=\"#definicije-bezbednost\">1<\/a><\/sup>AI,<sup> <a href=\"#definicije-bezbednost\" data-type=\"internal\" data-id=\"#definicije-bezbednost\">2<\/a><\/sup>ASM, <sup><a href=\"#definicije-bezbednost\" data-type=\"internal\" data-id=\"#definicije-bezbednost\">3<\/a><\/sup>QSC);<\/li>\n\n\n\n<li style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.625), 20px);\">Par li\u010dnih iskustava i anekdota<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">U primeru ispod mo\u017eete videti karakteristike jednog ra\u010dunarskog sistema iz perspektive sigurnosti.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1567\" height=\"805\" src=\"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-85.png\" alt=\"\" class=\"wp-image-1700\" style=\"object-fit:cover\" srcset=\"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-85.png 1567w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-85-300x154.png 300w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-85-1024x526.png 1024w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-85-768x395.png 768w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-85-1536x789.png 1536w\" sizes=\"auto, (max-width: 1567px) 100vw, 1567px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Napada\u010d na sistem mo\u017ee da ima mnogo razli\u010ditih ciljeva i razloga zbog kojih napada sistem: novac, pakost, aktivizam, rat&#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Postoji nekoliko razli\u010ditih vrsta napada:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Softverski;<\/strong><br>  RAT(Remote Access Tool),<br>  crv(malver koji se sam \u0161iri od ma\u0161ine do ma\u0161ine), <br>  wipe ware(malver koji unistava podatke),<br>  ransomware(malver koji zaklju\u010da podatke), <br><strong>Hardverski;<\/strong><br>  Podmetanje neispravnog hardvera,<br>  Uni\u0161tavanje postoje\u0107eg hardvera,<br>  Prekidanje dotoka struje do hardvera,<br><strong>Ljudski;<\/strong><br>  Kori\u0161\u0107enje ljudi za dobijanje pristupa sistemu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.625), 20px);\">ALI, pretnja je uvek ista, pristup i manipulacija podacima,na neovla\u0161\u0107en na\u010din,  na \u0161tetu vlasnika ra\u010dunarskog sistema i\/ili za svoju li\u010dnu dobit.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\" id=\"slabosti-aaa\">The Federal Bureau of Investigation\u2019s Internet Crime Complaint Center (IC3) has released its latest annual report. ~   ~ details reported losses exceeding $16 billion<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"exploit-aaa\">Slabosti ra\u010dunarskog sistema mogu da se svrstaju u nekoliko kategorija<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Softverska slabost;<br>~  Zastarela verzija softvera, poznati bagovi&#8230;<\/li>\n\n\n\n<li>Administrativna slabost;<br>~  Lo\u0161a arhitektura ra\u010dunarskog sistema, fizi\u010dka postavka ure\u0111aja&#8230;<\/li>\n\n\n\n<li>Ljudska slabost;<br>~  <sup><a href=\"#definicije-bezbednost\" data-type=\"internal\" data-id=\"#definicije-bezbednost\">4<\/a><\/sup><em>phishing, <sup><a href=\"#definicije-bezbednost\" data-type=\"internal\" data-id=\"#definicije-bezbednost\">5<\/a><\/sup>spoofing, <sup><a href=\"#definicije-bezbednost\" data-type=\"internal\" data-id=\"#definicije-bezbednost\">6<\/a><\/sup>social engineering<\/em>, ucena&#8230;<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"exploit-aaa\" style=\"font-size:clamp(14px, 0.875rem + ((1vw - 3.2px) * 0.625), 20px);\">\u0160ta je to exploit? Najlak\u0161e je objasniti sa nekoliko primera&#8230;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>EternalBlue<\/li>\n\n\n\n<li>WannaCry<\/li>\n\n\n\n<li>StuxNet<\/li>\n\n\n\n<li>SolarWinds napad<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">EternalBlue, napravljen od strane ameri\u010dke vlade davao je pristup svim ra\u010dunarima u ra\u010dunarskoj mre\u017ei, koriste\u0107i <sup><a href=\"#definicije-bezbednost\" data-type=\"internal\" data-id=\"#definicije-bezbednost\">7<\/a><\/sup><em>nulti dan slabost<\/em> u Microsoft Windows-u. Ukraden i iskori\u0161\u0107en u jednom od najve\u0107ih svedskih  <br>cyber-napada WannaCry.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">On May 12, 2017, the WannaCry ransomware worm spread to more than 200,000 computers in over 150 countries.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">StuxNet, napravljen da napada Iranovu nuklearnu infrastrukturu, koristio hardversku slabost <sup><a href=\"#definicije-bezbednost\" data-type=\"internal\" data-id=\"#definicije-bezbednost\">8<\/a><\/sup>PLC-ova, poznat kao jedan od prvih primera malvera koji mo\u017ee da uni\u0161ti hardver, koriscen za napad i na ostale grane industrije i energo distribucije.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sli\u010dna situacija i za <a href=\"https:\/\/www.techtarget.com\/whatis\/feature\/SolarWinds-hack-explained-Everything-you-need-to-know\" data-type=\"link\" data-id=\"https:\/\/www.techtarget.com\/whatis\/feature\/SolarWinds-hack-explained-Everything-you-need-to-know\">solarwinds<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"za\u0161tita-aaa\">Kako za\u0161tititi svoj sistem?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Li\u010dni ra\u010dunar je veoma lako za\u0161tititi. Jake \u0161ifre koje ne deli\u0161 ni sa kim, u\u010destalo a\u017euriranje softvera, AdBlock i antivirus softver i oprezno kori\u0161\u0107enje interneta.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kompleksniji sistem, koji je sa\u010dinjen od vi\u0161e ra\u010dunara, servera, upravlja\u010da i korisnika zahtevaju iste mere za pojedina\u010dne ra\u010dunare, ali i nove administrativne mere.<br>U primeru ispod mo\u017eete videti put informacija od korisnika do baze podataka<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1004\" height=\"334\" src=\"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-87.png\" alt=\"\" class=\"wp-image-1716\" srcset=\"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-87.png 1004w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-87-300x100.png 300w, https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-content\/uploads\/2026\/01\/image-87-768x255.png 768w\" sizes=\"auto, (max-width: 1004px) 100vw, 1004px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Izmedju svakog od ovih koraka postoje mogu\u0107e slabosti, tako da je bitno da se delovi sistema razdvajaju <sup>9<\/sup>firewall-om, da se a\u017eurira i testira softver od korisni\u010dkog login ekrana, do internih procesa razmene podataka izmedju baze podataka i internih servera, da se osigura web saobra\u0107aj enkripcionim protokolima kao https.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ostali bitni principi su:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Najmanje privilegije<br>~Svakom \u010dlanu sistema daje\u0161 pristup ISKLJU\u010cIVO podacima koji su mu neophodni<\/li>\n\n\n\n<li>Deljenje odgovornosti<br>~Ne postoji samo jedna ta\u010dka kontrole koja mo\u017ee da kompromituje ceo sistem, napada\u010d je forsiran da izvr\u0161i vi\u0161e napada da bi provalio u sistem samim tim ima vi\u0161e vremena za odbranu od istog<br><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Zaklju\u010dak<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dolazi vreme ve\u0161ta\u010dke inteligencije i kvantne komputacije, moje mi\u0161ljenje je da \u0107e slede\u0107i veliki razvoji u sigurnosti do\u0107i iz tih oblasti, u definicijama sam ostavio linkove koji se bave tim temama. ( 2 , 3)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"definicije-bezbednost\" style=\"font-style:normal;font-weight:900\"><em>Definicije<\/em><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li style=\"font-style:italic;font-weight:500\">Artificial Intelligence , \ud83d\ude1b<\/li>\n\n\n\n<li style=\"font-style:italic;font-weight:500\"><a href=\"https:\/\/www.ibm.com\/think\/topics\/attack-surface-management\" data-type=\"link\" data-id=\"https:\/\/www.ibm.com\/think\/topics\/attack-surface-management\">Attack surface management<\/a>,<\/li>\n\n\n\n<li style=\"font-style:italic;font-weight:500\"><a href=\"https:\/\/www.etsi.org\/technologies\/quantum-safe-cryptography\" data-type=\"link\" data-id=\"https:\/\/www.etsi.org\/technologies\/quantum-safe-cryptography\">Quantum safe cryptography<\/a><\/li>\n\n\n\n<li style=\"font-style:italic;font-weight:500\">phishing, napada\u010d glumi lice od poverenja da bi izvukli podatke<\/li>\n\n\n\n<li style=\"font-style:italic;font-weight:500\">spoofing, program ili \u010dovek uspe\u0161no uspeva da se predstavi kao lice ili program od poverenja<\/li>\n\n\n\n<li style=\"font-style:italic;font-weight:500\">social engineering, \u0161irok pojam napada na \u010dovekovu psihu zarad pristupa osetljivim informacijama <\/li>\n\n\n\n<li style=\"font-style:italic;font-weight:500\">zero day vulnerability, slabost u sistemu koja nije poznata nikome ko mo\u017ee da spre\u010di njenu eksploataciju<\/li>\n\n\n\n<li style=\"font-style:italic;font-weight:500\">programmable logic controller, jednostavan ra\u010dunar koji automatizuje procese u industriji<\/li>\n\n\n\n<li>firewall , sigurnosni sistem koji se pona\u0161a kao barijera izme\u0111u razli\u010ditih mre\u017ea i kontroli\u0161e tok informacija<\/li>\n<\/ol>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\">Navigacija<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"#naslov1-aaa\" data-type=\"internal\" data-id=\"#naslov1-aaa\">Naslov<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"#slabosti-aaa\" data-type=\"internal\" data-id=\"#slabosti-aaa\">Slabosti<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"#exploit-aaa\" data-type=\"internal\" data-id=\"#exploit-aaa\">Exploit<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"#za\u0161tita-aaa\" data-type=\"internal\" data-id=\"#za\u0161tita-aaa\">Za\u0161tita<\/a><\/p>\n\n\n\n<p class=\"has-system-serif-font-family wp-block-paragraph\" style=\"font-size:clamp(0.875rem, 0.875rem + ((1vw - 0.2rem) * 0.708), 1.3rem);\"><em>Izvori<\/em><\/p>\n\n\n\n<ol style=\"list-style-type:upper-roman\" class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.fbi.gov\/news\/press-releases\/fbi-releases-annual-internet-crime-report\" data-type=\"link\" data-id=\"https:\/\/www.fbi.gov\/news\/press-releases\/fbi-releases-annual-internet-crime-report\" target=\"_blank\" rel=\"noreferrer noopener\">FBI<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.cisecurity.org\/wp-content\/uploads\/2019\/01\/security-primer-eternalblue\" data-type=\"link\" data-id=\"https:\/\/www.cisecurity.org\/wp-content\/uploads\/2019\/01\/security-primer-eternalblue\" target=\"_blank\" rel=\"noreferrer noopener\">MS-ISAC<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/security\/ransomware\/wannacry-ransomware\/\" data-type=\"link\" data-id=\"https:\/\/www.cloudflare.com\/learning\/security\/ransomware\/wannacry-ransomware\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cloudflare<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.trellix.com\/security-awareness\/ransomware\/what-is-stuxnet\/\" data-type=\"link\" data-id=\"https:\/\/www.trellix.com\/security-awareness\/ransomware\/what-is-stuxnet\/\" target=\"_blank\" rel=\"noreferrer noopener\">Trellix<\/a><\/li>\n\n\n\n<li>IBM <a href=\"https:\/\/www.youtube.com\/@IBMTechnology\" data-type=\"link\" data-id=\"https:\/\/www.youtube.com\/@IBMTechnology\" target=\"_blank\" rel=\"noreferrer noopener\">1<\/a>,<a href=\"https:\/\/www.ibm.com\/us-en\" data-type=\"link\" data-id=\"https:\/\/www.ibm.com\/us-en\">2<\/a><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ukratko o meni Ja sam Stefan Amid\u017ei\u0107 zavr\u0161io sam Tehni\u010dku \u0161kolu Mihajlo Pupin, dobro poznajem engleski jezik i u\u010dim jo\u0161 jedan, ne volim sportove sa loptom, volim da sviram i slu\u0161am dobru muziku haha. Bezbednost na internetu Oduvek sam voleo da surfujem internetom, prirodno sam morao da naucim kako da drzim svoje podatke bezbednim. Sigurnost [&hellip;]<\/p>\n","protected":false},"author":24,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1682","post","type-post","status-publish","format-standard","hentry","category-nekategorizovano"],"_links":{"self":[{"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/posts\/1682","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/users\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/comments?post=1682"}],"version-history":[{"count":6,"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/posts\/1682\/revisions"}],"predecessor-version":[{"id":1722,"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/posts\/1682\/revisions\/1722"}],"wp:attachment":[{"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/media?parent=1682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/categories?post=1682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/e-learn2.viser.edu.rs\/wordpress\/wp-json\/wp\/v2\/tags?post=1682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}