{"id":6606,"date":"2017-05-18T08:14:20","date_gmt":"2017-05-18T08:14:20","guid":{"rendered":"https:\/\/www.apen.es\/?p=6606"},"modified":"2025-03-04T10:45:14","modified_gmt":"2025-03-04T10:45:14","slug":"que-son-els-bitcoins-i-perque-el-rescat-de-latac-de-ransomware-wannacry-exigeix-un-rescat-a-bitcoins","status":"publish","type":"post","link":"https:\/\/www.apen.es\/ca\/bloc\/que-son-els-bitcoins-i-perque-el-rescat-de-latac-de-ransomware-wannacry-exigeix-un-rescat-a-bitcoins\/","title":{"rendered":"Qu\u00e8 s\u00f3n els bitcoins i per qu\u00e8 el rescat de l&#039;atac de ransomware WannaCry exigeix un rescat a bitcoins?"},"content":{"rendered":"<p>La setmana passada hospitals, f\u00e0briques i tot tipus d&#039;empreses a tot el m\u00f3n es van paralitzar, a causa d&#039;un atac inform\u00e0tic de ransomware anomenat WannaCry. Un ciberatac massiu que va provocar un senyal d&#039;alerta generalitzat, per la possible p\u00e8rdua de dades (dades de desenes de milers d&#039;ordinadors van ser segrestats i encriptats en espera del pagament d&#039;un rescat) de moltes empreses a tot el m\u00f3n. Alguns dels pa\u00efsos m\u00e9s perjudicats van ser R\u00fassia i el Regne Unit, i una de les empreses espanyoles perjudicades va ser Telef\u00f3nica. Cal advertir que pagar el rescat d&#039;aquest ciberatac no garanteix la recuperaci\u00f3 de les dades.<\/p>\n\n\n\n<p>Avui, al bloc d&#039;Apen volem aprofitar aquest moment per explicar termes que avui estan en boca de tots, amb l&#039;objectiu de comprendre millor qu\u00e8 signifiquen i per qu\u00e8 es fan servir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u00e8 \u00e9s la criptomoneda o criptodivisa?<\/h2>\n\n\n\n<p>Es tracta d\u00b4un m\u00e8tode d\u00b4intercanvi digital, una moneda virtual creada el 2009 de la m\u00e0 dels fundadors de la criptodivisa m\u00e9s famosa, el Bitcoin. Les criptodivises s\u00f3n elements amb base electr\u00f2nica, no hi ha una moneda f\u00edsica. No t\u00e9 suport de cap govern perqu\u00e8 no \u00e9s de curs legal, i el control de la dita moneda virtual resideix en els seus portadors. El preu est\u00e0 determinat per la llei de l&#039;oferta i la demanda.<\/p>\n\n\n\n<p>\u00c9s una moneda virtual que no es pot falsificar, perqu\u00e8 com que es tracta d&#039;una moneda electr\u00f2nica, el programador tria el nombre de monedes que vol posar en circulaci\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u00e8 \u00e9s un bitcoin?<\/h2>\n\n\n\n<p>\u00c9s una criptodivisa creada el 2009 i sustentada a la xarxa P2P. \u00c9s una moneda digital que serveix per intercanviar b\u00e9ns o serveis. Una divisa electr\u00f2nica que presenta noves caracter\u00edstiques i destaca per la facilitat dintercanvi.<\/p>\n\n\n\n<p>Es caracteritza per ser descentralitzat, \u00e9s a dir, que no est\u00e0 recolzat ni dep\u00e8n de cap emissor central ni del Govern. Utilitza un sistema de prova de treball per evitar la doble despesa i tenir el consens entre tots els elements que integren la xarxa, intercanviat informaci\u00f3 sobre una xarxa no fiable i molt compromesa. Les transaccions no necessiten intermediaris i el protocol \u00e9s codi obert.<\/p>\n\n\n\n<p>Els hackers no volen un rescat ni en euros, ni en d\u00f2lars. Ells exigeixen bitcoins. El motiu principal de fer servir aquest tipus de criptodivisa \u00e9s l&#039;anonimat. No hi ha intermediaris, es fan en xarxes P2P (molt m\u00e9s segures que les habituals) i el xifratge de transaccions \u00e9s tan complex, que resulta molt dif\u00edcil de rastrejar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u00e8 \u00e9s un Ransomware?<\/h2>\n\n\n\n<p>Un Ransomware \u00e9s un atac inform\u00e0tic que encripta les dades del nostre ordinador, impedint-nos-hi l&#039;acc\u00e9s. Els ciberdelinq\u00fcents acostumen a exigir un rescat per alliberar aquests arxius. Aquests atacs s&#039;acostumen a infectar als ordinadors a trav\u00e9s de correus electr\u00f2nics fraudulents, i es propaguen mitjan\u00e7ant arxius maliciosos.<\/p>\n\n\n\n<p>El bitcoin es presenta com el refugi perfecte per a aquells \u201clladres de dades\u201d, ja que no es poden detectar les operacions que es fan amb aquesta moneda de canvi i no es coneix el destinatari de l&#039;operaci\u00f3. D&#039;aquesta manera, es mant\u00e9 el delinq\u00fcent a l&#039;anonimat, oferint una perfecta via d&#039;escapament.<\/p>","protected":false},"excerpt":{"rendered":"<p>La semana pasada hospitales, f\u00e1bricas y todo tipo de empresas en todo el mundo se paralizaron, debido a un ataque&#8230;<\/p>","protected":false},"author":4,"featured_media":6607,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[47,147,145,149,121,194,88],"tags":[212,214,213,48,73],"class_list":["post-6606","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-apen","category-ciberataques","category-comunicaciones","category-copia-de-seguridad","category-equipos","category-seguridad","category-web","tag-bitcoin","tag-ciberataque","tag-criptodivisa","tag-mantenimiento-informatico","tag-seguridad-informatica"],"acf":[],"yoast_head":"<!-- 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WannaCry exige un rescate en\u00a0 bitcoins? - Apen Inform\u00e1tica\" \/>\n<meta property=\"og:description\" content=\"La semana pasada hospitales, f\u00e1bricas y todo tipo de empresas en todo el mundo se paralizaron, debido a un ataque inform\u00e1tico de ransomware llamado\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.apen.es\/ca\/bloc\/que-son-els-bitcoins-i-perque-el-rescat-de-latac-de-ransomware-wannacry-exigeix-un-rescat-a-bitcoins\/\" \/>\n<meta property=\"og:site_name\" content=\"Apen Inform\u00e1tica\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/apensolucions\" \/>\n<meta property=\"article:published_time\" content=\"2017-05-18T08:14:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-04T10:45:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.apen.es\/wp-content\/uploads\/2017\/05\/apen-bitcoin-ok.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"850\" \/>\n\t<meta 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