{"id":14365,"date":"2022-02-08T13:56:08","date_gmt":"2022-02-08T12:56:08","guid":{"rendered":"https:\/\/kinit.sk\/kinit-je-sucastou-medzinarodneho-konzorcia-cedmo-zameraneho-na-boj-s-dezinformaciami-2\/"},"modified":"2022-03-04T11:45:20","modified_gmt":"2022-03-04T10:45:20","slug":"ako-strojove-ucenie-pomaha-chranit-pred-kyberutokmi","status":"publish","type":"post","link":"https:\/\/kinit.sk\/sk\/ako-strojove-ucenie-pomaha-chranit-pred-kyberutokmi\/","title":{"rendered":"Ako strojov\u00e9 u\u010denie pom\u00e1ha chr\u00e1ni\u0165 pred kyber\u00fatokmi"},"content":{"rendered":"<div id=\"\" class=\"element core-paragraph\">\n<p>Spam, phishingov\u00e9 \u00fatoky \u010di ransomware &#8211; ka\u017ed\u00fd z n\u00e1s ich asi pozn\u00e1 a s niektor\u00fdmi z nich sa pravdepodobne aj stretol. Existuj\u00fa v\u0161ak aj typy \u00fatokov, kedy sa napr\u00edklad nevieme prihl\u00e1si\u0165 na n\u00e1\u0161 ob\u013e\u00faben\u00fd web. Snahou \u00fato\u010dn\u00edkov je z\u00edska\u0165 finan\u010dn\u00fd profit, po\u0161kodi\u0165 reput\u00e1ciu, z\u00edska\u0165 citliv\u00e9 inform\u00e1cie alebo naru\u0161i\u0165 konkuren\u010dn\u00fd boj. V tomto \u010dl\u00e1nku sa zameriame najm\u00e4 na sie\u0165ov\u00e9 \u00fatoky a na to, ako ich m\u00f4\u017eeme detegova\u0165 pomocou strojov\u00e9ho u\u010denia.<\/p>\n<\/div>\n\n<div id=\"\" class=\"element core-heading\">\n<h2 class=\"wp-block-heading\" id=\"sietove-utoky\">Sie\u0165ov\u00e9 \u00fatoky<\/h2>\n<\/div>\n\n<div id=\"\" class=\"element core-paragraph\">\n<p>Ani na Slovensku nie sme kompletne chr\u00e1nen\u00ed pred kyber\u00fatokmi (<a href=\"https:\/\/www.nases.gov.sk\/slovensko-celi-masivnym-utokom-hackerov\/\" target=\"_blank\" rel=\"noreferrer noopener\">DoS \u00fatoky na Slovensku<\/a>, <a href=\"https:\/\/ekonomika.sme.sk\/c\/22782129\/slovenskom-sa-siri-phishingova-kampan-ktora-imituje-komunikaciu-bank.html\" target=\"_blank\" rel=\"noreferrer noopener\">imitovanie spr\u00e1vania b\u00e1nk<\/a>, <a href=\"https:\/\/www.trend.sk\/spravy\/hackersky-utok-zasiahol-aj-fakultnu-nemocnicu-nitre\" target=\"_blank\" rel=\"noreferrer noopener\">\u00fatok na nemocnicu v Nitre<\/a>), a teda ako v\u0161etci ostatn\u00ed sa potrebujeme vedie\u0165 br\u00e1ni\u0165. Pom\u00e1ha n\u00e1m v tom aj skuto\u010dnos\u0165, \u017ee aktivitu \u00fato\u010dn\u00edkov vieme za\u010dleni\u0165 do \u0161tyroch z\u00e1kladn\u00fdch kateg\u00f3ri\u00ed:<\/p>\n<\/div>\n\n<div id=\"\" class=\"element core-list\">\n<ol class=\"wp-block-list\"><li><strong>Prieskum <\/strong>(probe) je prvotn\u00e1 aktivita kyberzlo\u010dincov, kedy zis\u0165uj\u00fa, ak\u00e1 je infra\u0161trukt\u00fara siete mo\u017enej obete, ak\u00e9 slu\u017eby (alebo aj porty) m\u00e1 spusten\u00e9. Ide celkovo o snahu zisti\u0165 \u010do najviac inform\u00e1ci\u00ed k pripravovan\u00e9mu \u00fatoku.<\/li><li><strong>Odopretie slu\u017eby<\/strong> (denial of service &#8211; DoS) je \u00fatok, sp\u00f4soben\u00fd \u0161kodlivou udalos\u0165ou, kedy doch\u00e1dza k nezvy\u010dajn\u00fdm a obvykle nadmern\u00fdm po\u017eiadavk\u00e1m na zariadenie, \u010do sp\u00f4sob\u00ed pre\u0165a\u017eenie jeho v\u00fdpo\u010dtov\u00fdch prostriedkov.&nbsp;<\/li><li><strong>Z\u00edskanie pr\u00e1v na lok\u00e1lnom zariaden\u00ed<\/strong> (remote to local) &#8211; \u00fato\u010dn\u00edk dok\u00e1\u017ee komunikova\u0165 so zariaden\u00edm, aj ke\u010f na \u0148om nem\u00e1 pou\u017e\u00edvate\u013esk\u00fd \u00fa\u010det a vie z\u00edska\u0165 pr\u00edstup k tomuto syst\u00e9mu.<\/li><li><strong>Z\u00edskanie pr\u00e1v superpou\u017e\u00edvate\u013ea<\/strong> (user to root) &#8211; zneu\u017eit\u00edm zranite\u013enosti dok\u00e1\u017ee \u00fato\u010dn\u00edk zv\u00fd\u0161i\u0165 svoje opr\u00e1vnenia v syst\u00e9me na prakticky neobmedzen\u00e9.<\/li><\/ol>\n<\/div>\n\n<div id=\"\" class=\"element core-paragraph\">\n<p>Ka\u017ed\u00fd z uveden\u00fdch \u00fatokov je nie\u010d\u00edm jedine\u010dn\u00fd, a v\u010faka tomu je mo\u017en\u00e9 ich odhali\u0165. Aj v s\u00fa\u010dasnosti existuje viacero sp\u00f4sobov, ako n\u00e1js\u0165 v\u00e4\u010d\u0161inu be\u017ene zn\u00e1mych \u00fatokov (napr\u00edklad prostredn\u00edctvom n\u00e1stroja <a href=\"https:\/\/suricata.io\/download\/\" target=\"_blank\" rel=\"noreferrer noopener\">Suricata<\/a>). Sp\u00f4soby, ako m\u00f4\u017ee prebieha\u0165 \u00fatok, v\u0161ak nie s\u00fa pevne dan\u00e9. Ak by to tak bolo, boli by ohrozen\u00e9 len tie firmy a pou\u017e\u00edvatelia, ktor\u00ed by ve\u013emi zanedb\u00e1vali svoju kyberbezpe\u010dnos\u0165.<\/p>\n<\/div>\n\n<div id=\"\" class=\"element core-heading\">\n<h2 class=\"wp-block-heading\" id=\"vyvoj-sietovych-utokov\">V\u00fdvoj sie\u0165ov\u00fdch \u00fatokov<\/h2>\n<\/div>\n\n<div id=\"\" class=\"element core-paragraph\">\n<p>Kyberzlo\u010dinci neust\u00e1le prich\u00e1dzaj\u00fa s nov\u00fdmi sp\u00f4sobmi, a preto je potrebn\u00e9 by\u0165 neust\u00e1le v strehu. Len v r\u00e1mci roku 2021 bolo zaznamenan\u00fdch viac ako 55 mili\u00e1rd pokusov o prelomenie hesiel (spr\u00e1vu k ohrozeniam si m\u00f4\u017eete pre\u010d\u00edta\u0165 napr\u00edklad <a href=\"https:\/\/www.welivesecurity.com\/wp-content\/uploads\/2021\/09\/eset_threat_report_t22021.pdf\">t<\/a><a href=\"https:\/\/www.welivesecurity.com\/wp-content\/uploads\/2021\/09\/eset_threat_report_t22021.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">u<\/a>). Medzi \u0161tandardn\u00e9 sp\u00f4soby patr\u00ed neust\u00e1ly monitoring sie\u0165ovej komunik\u00e1cie a h\u013eadanie anom\u00e1li\u00ed. Ak sa tak\u00e1to anom\u00e1lia n\u00e1jde, m\u00f4\u017ee to znamena\u0165, \u017ee sme narazili na nov\u00fd a dosia\u013e nezn\u00e1my typ \u00fatoku a vieme na\u0148 zareagova\u0165.&nbsp;<\/p>\n<\/div>\n\n<div id=\"\" class=\"element core-paragraph\">\n<p>Av\u0161ak, nie ka\u017ed\u00e1 anom\u00e1lia mus\u00ed znamena\u0165, \u017ee ide o \u00fatok, pos\u00fa\u010fte sami:<\/p>\n<\/div>\n\n<div id=\"\" class=\"element core-list\">\n<ol class=\"wp-block-list\"><li>Ak sledujeme pohyby na \u00fa\u010dte a zaplat\u00edme v\u00fdmenu okien kreditnou kartou, m\u00f4\u017ee nasta\u0165 nezvykle vysok\u00fd pohyb na \u00fa\u010dte. Ide o jednorazov\u00fa anom\u00e1liu z h\u013eadiska n\u00e1\u0161ho be\u017en\u00e9ho m\u00ed\u0148ania.<\/li><li>Ak sa n\u00e1m podar\u00ed vytvori\u0165 extr\u00e9mne \u00faspe\u0161n\u00fa marketingov\u00fa kampa\u0148, tak n\u00e1hly n\u00e1por z\u00e1kazn\u00edkov m\u00f4\u017ee sp\u00f4sobi\u0165 p\u00e1d n\u00e1\u0161ho e-shopu, hoci to ur\u010dite nebol ich cie\u013e.<\/li><li>Ak realizujeme platby na \u00fa\u010dte v hodnote 1000 eur ka\u017ed\u00fd mesiac a v decembri je to zrazu 1500 eur, mohli by sme to bra\u0165 ako podozriv\u00fa anom\u00e1liu. Ke\u010f v\u0161ak vezmeme do \u00favahy kontext, zist\u00edme, \u017ee ide o viano\u010dn\u00e9 obdobie, a teda t\u00e1to prudk\u00e1 zmena je v poriadku. Inak by sme k tomu pristupovali, keby tak\u00fdto skok nastal napr\u00edklad v marci.<\/li><\/ol>\n<\/div>\n\n<div id=\"\" class=\"element core-paragraph\">\n<p>Vid\u00edme teda, \u017ee nie ka\u017ed\u00e1 anom\u00e1lia mus\u00ed reprezentova\u0165 \u00fatok, ale ka\u017ed\u00fd \u00fatok je anom\u00e1liou vzh\u013eadom na norm\u00e1lne a o\u010dak\u00e1van\u00e9 spr\u00e1vanie sie\u0165ovej komunik\u00e1cie. Pr\u00edstupy detekcie anom\u00e1li\u00ed teda v d\u00f4sledku toho vykazuj\u00fa vy\u0161\u0161iu mieru falo\u0161n\u00fdch alarmov a zost\u00e1va na obetav\u00fdch bezpe\u010dnostn\u00fdch \u0161pecialistoch skontrolova\u0165, \u010di sa jedn\u00e1 o skuto\u010dne \u0161kodliv\u00fa anom\u00e1liu (\u00fatok).<\/p>\n<\/div>\n\n<div id=\"\" class=\"element core-paragraph\">\n<p>Do istej miery vedia pom\u00f4c\u0165 zv\u00fd\u0161i\u0165 bezpe\u010dnos\u0165 aj poskytovatelia pr\u00edstupu na internet, \u010do s\u00fa spolo\u010dnosti, ktor\u00e9 n\u00e1m umo\u017e\u0148uj\u00fa prip\u00e1ja\u0165 sa na internet. Vyu\u017e\u00edvaj\u00fa ich be\u017en\u00ed \u013eudia, ale aj ve\u013ek\u00e9 firmy. M\u00f4\u017eu monitorova\u0165 svoju sie\u0165 a v pr\u00edpade \u00fatoku na\u0148 zareagova\u0165, \u010di u\u017e upozornen\u00edm pou\u017e\u00edvate\u013ea alebo aj akt\u00edvnym z\u00e1sahom (napr\u00edklad pou\u017ei\u0165 obranu proti DDoS \u00fatoku). Nemusia vedie\u0165 zabr\u00e1ni\u0165 v\u0161etk\u00fdm typom \u00fatokov, preto\u017ee \u0161tandardne sa sleduje len aktivita na sieti a nie obsah pren\u00e1\u0161an\u00fdch \u00fadajov.<\/p>\n<\/div>\n\n<div id=\"\" class=\"element core-heading\">\n<h2 class=\"wp-block-heading\" id=\"inovacny-priemyselny-projekt-pre-zvysenie-bezpecnosti\">Inova\u010dn\u00fd priemyseln\u00fd projekt pre zv\u00fd\u0161enie bezpe\u010dnosti<\/h2>\n<\/div>\n\n<div id=\"\" class=\"element core-paragraph\">\n<p><a href=\"https:\/\/www.vnet.sk\/en\/for-home\/for-home-landpage\/\" target=\"_blank\" rel=\"noreferrer noopener\">VNET<\/a> patr\u00ed medzi poskytovate\u013eov pr\u00edstupu na internet, ktor\u00ed maj\u00fa proakt\u00edvnu ochranu a monitoruj\u00fa dianie na svojej sieti. Sna\u017e\u00ed sa zvy\u0161ova\u0165 svoju schopnos\u0165 identifikova\u0165 podozriv\u00e9 vzory a korel\u00e1cie (teda anom\u00e1lie) v sie\u0165ovej prem\u00e1vke a t\u00fdm aj zvy\u0161ova\u0165 bezpe\u010dnos\u0165 svojich z\u00e1kazn\u00edkov.&nbsp;<\/p>\n<\/div>\n\n<div id=\"\" class=\"element core-paragraph\">\n<p>V spolo\u010dnom priemyselnom <a href=\"https:\/\/kinit.sk\/project\/vnet-anomaly-detection-for-improving-network-cybersecurity\/\">projekte<\/a> s VNET-om vyu\u017e\u00edvame ich odborn\u00e9 znalosti v tejto dom\u00e9ne a na\u0161u expert\u00edzu v oblasti detekcie anom\u00e1li\u00ed. Pripravujeme mo\u017enosti pou\u017eitia strojov\u00e9ho u\u010denia na detekciu \u0161kodliv\u00fdch anom\u00e1li\u00ed (\u00fatokov). Podarilo sa n\u00e1m identifikova\u0165 vhodn\u00e9 pr\u00edstupy a d\u00e1tov\u00e9 sady, ktor\u00e9 bud\u00fa pou\u017eite\u013en\u00e9 pre n\u00e1vrh met\u00f3d \u0161it\u00fdch pre potreby poskytovate\u013eov, ako je VNET. Zrealizovali sme u\u017e aj prvotn\u00e9 experimenty, aby sme lep\u0161ie spoznali pr\u00ednosy a obmedzenia v existuj\u00facom monitoringu sie\u0165ovej aktivity. Ve\u013ekou v\u00fdzvou sa ukazuje pou\u017eite\u013enos\u0165 existuj\u00facich, vo v\u00fdskume pou\u017e\u00edvan\u00fdch d\u00e1tov\u00fdch s\u00e1d, ktor\u00e9 javia ur\u010dit\u00e9 probl\u00e9my pri pou\u017eit\u00ed v re\u00e1lnom prostred\u00ed.&nbsp;<\/p>\n<\/div>\n\n<div id=\"\" class=\"element core-paragraph\">\n<p>Te\u0161\u00edme sa na to, ako na\u0161e spolo\u010dn\u00e9 rie\u0161enie, zalo\u017een\u00e9 na prvkoch strojov\u00e9ho u\u010denia zlep\u0161\u00ed ochranu klientov a ver\u00edme, \u017ee na\u0161imi publikovan\u00fdmi v\u00fdstupmi obohat\u00edme aj znalos\u0165 svetovej vedeckej a odbornej komunity.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Spam, phishingov\u00e9 \u00fatoky \u010di ransomware &#8211; ka\u017ed\u00fd z n\u00e1s ich asi pozn\u00e1 a s niektor\u00fdmi z nich sa pravdepodobne aj stretol. Existuj\u00fa v\u0161ak aj typy \u00fatokov, kedy sa napr\u00edklad nevieme&#8230;<\/p>\n","protected":false},"author":4,"featured_media":6599,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[88,93,349],"tags":[],"class_list":["post-14365","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pop-science-sk","category-security-sk","category-2022-sk"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ako strojov\u00e9 u\u010denie pom\u00e1ha chr\u00e1ni\u0165 pred kyber\u00fatokmi - KInIT<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kinit.sk\/sk\/ako-strojove-ucenie-pomaha-chranit-pred-kyberutokmi\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ako strojov\u00e9 u\u010denie pom\u00e1ha chr\u00e1ni\u0165 pred kyber\u00fatokmi - KInIT\" \/>\n<meta property=\"og:description\" content=\"Spam, phishingov\u00e9 \u00fatoky \u010di ransomware &#8211; ka\u017ed\u00fd z n\u00e1s ich asi pozn\u00e1 a s niektor\u00fdmi z nich sa pravdepodobne aj stretol. 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