{"id":484,"date":"2026-09-30T07:48:44","date_gmt":"2026-09-30T07:48:44","guid":{"rendered":"http:\/\/www.cert.hr\/tjedni-izvjestaji\/spam\/"},"modified":"2026-11-04T17:12:56","modified_gmt":"2026-11-04T17:12:56","slug":"spam","status":"publish","type":"page","link":"https:\/\/cert.hr\/en\/tjedni-izvjestaji\/spam\/","title":{"rendered":"Spam"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Nacionalni CERT svakog ponedjeljka priprema tjedne izvje\u0161taje o zara\u017eenim ra\u010dunalima ili poslu\u017eiteljima i dostavlja ih vlasnicima IP adresnog prostora u kojem je zabilje\u017eena ne\u017eeljena aktivnost, tj. slanje ne\u017eeljene po\u0161te (spama). Izvje\u0161taji se dostavljaju u \u201c.zip\u201d formatu, a unutar njega se nalazi \u201c.csv\u201d datoteka s nazivom vlasnika adresnog prostora.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Datoteka je podijeljena u osam stupaca, a opis svakog pojedinog stupca se nalazi u nastavku:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Stupac<\/th><th>Opis<\/th><\/tr><\/thead><tbody><tr><td><code>timestamp<\/code><\/td><td>datum, vrijeme i vremenska zona kad je aktivnost otkrivena<\/td><\/tr><tr><td><code>ip<\/code><\/td><td>IP adresa registrirana kao izvor spama<\/td><\/tr><tr><td><code>port<\/code><\/td><td>izvori\u0161ni port<\/td><\/tr><tr><td><code>hostname<\/code><\/td><td>hostname dobiven putem reverznog DNS-a<\/td><\/tr><tr><td><code>source_as_name<\/code><\/td><td>naziv izvori\u0161nog autonomnog sustava (AS)<\/td><\/tr><tr><td><code>source_asn<\/code><\/td><td>ASN izvori\u0161ta<\/td><\/tr><tr><td><code>classification_type<\/code><\/td><td>tip klasifikacije<\/td><\/tr><tr><td><code>malware_name<\/code><\/td><td>naziv malvera koji generira spam<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Najva\u017eniji je drugi stupac pod oznakom \u201cIP\u201d u kojem se nalazi IP adresa ure\u0111aja na kojem je zabilje\u017eena nedozvoljena aktivnost (ne\u017eeljena po\u0161ta \u2013 spam). Va\u017eno je napomenuti kako se radi o javnoj IP adresi koja se ne mora podudarati s adresom ra\u010dunala, ona obi\u010dno posjeduju vlastitu privatnu IP adresu. Potrebno je obratiti pa\u017enju na prvi stupac \u201ctimestamp\u201d, koji predstavlja vrijeme kada je zara\u017eeni ure\u0111aj slao ne\u017eeljenu po\u0161tu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ako zaprimite ovakav tip izvje\u0161taja u najve\u0107em broju slu\u010dajeva radi se o ure\u0111aju (ra\u010dunalu ili poslu\u017eitelju) zara\u017eenom zlonamjernim programom koji \u0161alje ne\u017eeljenu po\u0161tu prema \u0161irokoj masi \u2013 spambot. Dodatno postoji mogu\u0107nost da je kompromitiran ra\u010dun elektroni\u010dke po\u0161te unutar va\u0161eg sustava elektroni\u010dke po\u0161te s kojeg se \u0161alje velika koli\u010dina ne\u017eeljene po\u0161te prema drugim korisnicima.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6af1a0d6ccf6c&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6af1a0d6ccf6c\" class=\"wp-block-image size-large wp-lightbox-container\"><img decoding=\"async\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"\/wp-content\/uploads\/2021\/04\/MicrosoftTeams-image-11.png\" alt=\"Primjer sadr\u017eaja tjednog izvje\u0161taja o spamu\"\/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>","protected":false},"excerpt":{"rendered":"<p>Izvje\u0161taj o ure\u0111ajima u va\u0161em adresnom prostoru s kojih se \u0161alje ne\u017eeljena po\u0161ta.<\/p>","protected":false},"author":3,"featured_media":0,"parent":480,"menu_order":30,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"cert_hero":"","cert_deco":"","footnotes":""},"class_list":["post-484","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/cert.hr\/en\/wp-json\/wp\/v2\/pages\/484","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cert.hr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cert.hr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cert.hr\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/cert.hr\/en\/wp-json\/wp\/v2\/comments?post=484"}],"version-history":[{"count":2,"href":"https:\/\/cert.hr\/en\/wp-json\/wp\/v2\/pages\/484\/revisions"}],"predecessor-version":[{"id":1720,"href":"https:\/\/cert.hr\/en\/wp-json\/wp\/v2\/pages\/484\/revisions\/1720"}],"up":[{"embeddable":true,"href":"https:\/\/cert.hr\/en\/wp-json\/wp\/v2\/pages\/480"}],"wp:attachment":[{"href":"https:\/\/cert.hr\/en\/wp-json\/wp\/v2\/media?parent=484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}