{"id":73923,"date":"2020-03-12T20:42:15","date_gmt":"2020-03-12T17:42:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/google-predstavil-blokirovshhik-podstanovki-vvoda-cherez-vredonosnye-usb-ustrojstva"},"modified":"2020-03-12T20:42:15","modified_gmt":"2020-03-12T17:42:15","slug":"google-predstavil-blokirovshhik-podstanovki-vvoda-cherez-vredonosnye-usb-ustrojstva","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/google-predstavil-blokirovshhik-podstanovki-vvoda-cherez-vredonosnye-usb-ustrojstva","title":{"rendered":"Google predstavil blok\u00e1tor substit\u00facie vstupu cez \u0161kodliv\u00e9 USB zariadenia","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Spolo\u010dnos\u0165 Google publikovala<\/a><\/noindex> n\u00e1stroj ukip<\/a><\/noindex>, ktor\u00fd umo\u017e\u0148uje sledova\u0165 a blokova\u0165 \u00fatoky<\/a><\/noindex>, konan\u00e9 s pou\u017eit\u00edm \u0161kodliv\u00fdch USB zariaden\u00ed, ktor\u00e9 simuluj\u00fa USB kl\u00e1vesnice na skryt\u00e9 vkladanie fikt\u00edvnych stla\u010den\u00ed kl\u00e1vesov (napr\u00edklad, v priebehu \u00fatoku m\u00f4\u017ee by\u0165 simulovan\u00e9<\/a><\/noindex> s\u00fabor stla\u010den\u00ed, ktor\u00fd vedie k otvoreniu termin\u00e1lu a vykonaniu v \u0148om \u013eubovo\u013en\u00fdch pr\u00edkazov). K\u00f3d je nap\u00edsan\u00fd v jazyku Python a distribuovan\u00fd<\/a><\/noindex> pod licenciou Apache 2.0. <\/p>\n

N\u00e1stroj je spusten\u00fd ako systemd slu\u017eba a m\u00f4\u017ee fungova\u0165 v re\u017eimoch monitorovania a prevencie \u00fatokov. V re\u017eime monitorovania sa ur\u010duje mo\u017en\u00e9 \u00fatoky a zapisuje sa do logu aktivita spojen\u00e1 s pokusmi o pou\u017eitie USB zariaden\u00ed na nespr\u00e1vne \u00fa\u010dely na vkladanie vstupu. V re\u017eime ochrany, pri zisten\u00ed potenci\u00e1lne \u0161kodliv\u00e9ho zariadenia, sa odpoj\u00ed od syst\u00e9mu na \u00farovni ovl\u00e1da\u010da. <\/p>\n

Malicious activity is detected based on heuristic analysis of input patterns and delays between keystrokes \u2014 an attack is usually carried out in the presence of the user, and to remain unnoticed, simulated keystrokes are sent with atypical minimal delays for normal keyboard input. Two settings, KEYSTROKE_WINDOW and ABNORMAL_TYPING, are proposed to alter the attack detection logic (the first defines the number of keystrokes for analysis, and the second establishes the threshold interval between keystrokes).<\/p>\n

\u00datok m\u00f4\u017ee by\u0165 vykonan\u00fd pomocou nev\u00fdrazn\u00e9ho zariadenia s modifikovan\u00fdm firmv\u00e9rom, napr\u00edklad, simulova\u0165 kl\u00e1vesnicu mo\u017eno v USB pam\u00e4ti<\/a><\/noindex>, USB hub<\/a><\/noindex>, webovej kamere<\/a><\/noindex> alebo smartf\u00f3ne<\/a><\/noindex> (v Kali NetHunter<\/a><\/noindex> je k dispoz\u00edcii \u0161peci\u00e1lny n\u00e1stroj na vkladanie vstupu z pripojen\u00e9ho smartf\u00f3nu cez USB port s opera\u010dn\u00fdm syst\u00e9mom Android). Na zlo\u017eenie \u00fatokov cez USB, okrem ukip, je mo\u017en\u00e9 pou\u017ei\u0165 aj bal\u00edk USBGuard<\/a><\/noindex>, ktor\u00fd povo\u013euje pripojenie zariaden\u00ed len z bieleho zoznamu alebo blokuje mo\u017enos\u0165 pripojenia cudz\u00edch USB zariaden\u00ed po\u010das blokovania obrazovky a neumo\u017e\u0148uje pr\u00e1cu s tak\u00fdmi zariadeniami po n\u00e1vrate pou\u017e\u00edvate\u013ea.<\/p>\n

<\/a><\/noindex><\/p>\n

Zdroj: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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