{"id":6991,"date":"2021-03-22T16:40:24","date_gmt":"2021-03-22T16:40:24","guid":{"rendered":"https:\/\/198.27.90.141\/?p=6991"},"modified":"2026-09-29T18:35:57","modified_gmt":"2026-09-29T18:35:57","slug":"qual-e-a-diferenca-entre-worm-e-virus","status":"publish","type":"post","link":"https:\/\/gatefy.com\/pt-br\/blog\/qual-e-a-diferenca-entre-worm-e-virus\/","title":{"rendered":"Qual \u00e9 a diferen\u00e7a entre worm e v\u00edrus?"},"content":{"rendered":"

V\u00edrus e worms s\u00e3o algumas das amea\u00e7as cibern\u00e9ticas mais cl\u00e1ssicas que existem. Eles s\u00e3o programas maliciosos que infectam computadores e dispositivos, causando caos e desordem. Para come\u00e7ar, \u00e9 importante saber que frequentemente os termos v\u00edrus e worm s\u00e3o usados de forma intercambi\u00e1vel, mas n\u00e3o significam a mesma coisa. V\u00edrus e worms s\u00e3o tipos de malware<\/strong> <\/a>(ou software malicioso), assim como ransomware<\/strong><\/a>, spyware<\/strong> <\/a>e trojan<\/strong><\/a>.<\/p>\n

A prop\u00f3sito, o termo v\u00edrus \u00e9 muito usado de forma errada. Voc\u00ea vai encontrar e ler em muitos lugares a palavra v\u00edrus sendo usada como sin\u00f4nimo de malware. Isto \u00e9, trojan \u00e9 um v\u00edrus. Ransomware \u00e9 um v\u00edrus. Spyware \u00e9 um v\u00edrus. Worm \u00e9 um v\u00edrus. Mas a hist\u00f3ria n\u00e3o \u00e9 bem essa. Existem diferen\u00e7as entre todos esses tipos de amea\u00e7as (ou malwares). Podem ser diferen\u00e7as sutis, mas existem.<\/p>\n

Conhecendo as diferen\u00e7as entre v\u00edrus e worm<\/h2>\n

Neste post, vamos discutir as diferen\u00e7as entre v\u00edrus e worms. Elas s\u00e3o amea\u00e7as que, em geral, agem da mesma maneira. Algumas pessoas at\u00e9 definem os worms como um tipo de v\u00edrus. Ou seja, uma categoria ou grupo dentro de diferentes tipos de v\u00edrus. Mas n\u00f3s preferimos separ\u00e1-los porque eles t\u00eam as suas pr\u00f3prias caracter\u00edsticas.<\/p>\n

Al\u00e9m disso, saber a diferen\u00e7a entre v\u00edrus e worm certamente vai ajudar voc\u00ea a proteger melhor os seus dispositivos e a sua empresa contra esses tipos de amea\u00e7a cibern\u00e9tica.<\/p>\n

V\u00edrus<\/h3>\n

Um v\u00edrus de computador \u00e9 quase como um v\u00edrus humano. Ele precisa de um ambiente favor\u00e1vel ou ideal para se espalhar e infectar ainda mais o sistema conforme se move. At\u00e9 por isso que uma das principais caracter\u00edsticas dos v\u00edrus \u00e9 que eles precisam de um host (ou hospedeiro). Ou seja, os v\u00edrus precisam ser anexados a programas, softwares e arquivos execut\u00e1veis. Estes s\u00e3o os hosts.<\/p>\n

Al\u00e9m disso, outro ponto-chave sobre v\u00edrus que os diferencia de outros tipos de malware \u00e9 que eles dependem de intera\u00e7\u00e3o humana. Isto significa que um v\u00edrus infectar\u00e1 o seu computador somente se voc\u00ea executar o arquivo malicioso. Caso contr\u00e1rio, o v\u00edrus pode permanecer oculto em seu computador sem causar grandes danos vis\u00edveis.<\/p>\n

Da mesma forma, para se propagar, os v\u00edrus geralmente precisam de ajuda humana. Eles se espalham quando arquivos maliciosos s\u00e3o compartilhados com outras pessoas, seja por e-mail, rede ou disco. Uma outra caracter\u00edstica dos v\u00edrus \u00e9 que eles t\u00eam a capacidade de se replicar dentro de um sistema, mas apenas localmente.<\/p>\n

Worm<\/h3>\n

Os worms s\u00e3o softwares maliciosos independentes ou aut\u00f4nomos. Em outras palavras, eles n\u00e3o precisam de um host e tamb\u00e9m n\u00e3o precisam de interven\u00e7\u00e3o humana para se espalhar. Por exemplo, um worm pode infectar a sua m\u00e1quina durante a reinicializa\u00e7\u00e3o do sistema, sem a sua intera\u00e7\u00e3o direta.<\/p>\n

Isto significa tamb\u00e9m que um worm pode viajar e infectar novas m\u00e1quinas sozinho. Uma vez instalado, ele se aproveita do sistema para infectar tantos outros sistemas quanto for poss\u00edvel. Ao contr\u00e1rio dos v\u00edrus, os worms se auto-replicam e ent\u00e3o usam o computador infectado para infectar novas m\u00e1quinas.<\/p>\n

Um worm, por exemplo, pode acessar a sua plataforma de e-mail e enviar c\u00f3pias de si mesmo para todos os seus amigos, parentes, colegas de trabalho e quem mais voc\u00ea tiver em sua lista de e-mails. Ou pode at\u00e9 mesmo usar a rede da sua empresa para distribuir c\u00f3pias de si mesmo.<\/p>\n

Por causa dessas caracter\u00edsticas, os worms s\u00e3o geralmente mais perigosos e prejudiciais do que os v\u00edrus.<\/p>\n

Como worm e v\u00edrus podem afetar voc\u00ea e a sua empresa<\/h2>\n

Os preju\u00edzos e estragos causados por v\u00edrus e worms variam muito. Eles podem causar apenas alguns danos leves, como deixar a m\u00e1quina mais lenta, assim como alguns danos grandes, como excluir arquivos ou danificar o seu hardware ou software. Em casos mais s\u00e9rios, esses tipos de amea\u00e7as podem servir como backdoor para invasores que desejam ter acesso e at\u00e9 controlar a m\u00e1quina infectada.<\/p>\n

Por serem mais abrangentes e independentes, os worms podem afetar sistemas, redes e at\u00e9 mesmo desabilitar softwares de seguran\u00e7a e prote\u00e7\u00e3o. H\u00e1 casos em que worms s\u00e3o usados para infectar m\u00e1quinas e transform\u00e1-las em rob\u00f4s que ser\u00e3o usados posteriormente em ataques de DDoS (Distributed Denial-of-Service)<\/strong><\/a>.<\/p>\n

Como bloquear v\u00edrus e worm<\/h2>\n

Um bom come\u00e7o para bloquear e prevenir infec\u00e7\u00f5es por v\u00edrus, worms e outros malwares \u00e9 adotar uma boa solu\u00e7\u00e3o antimalware e, no caso de uma rede, ter um firewall eficiente. Al\u00e9m disso, manuseie arquivos suspeitos com cuidado, fa\u00e7a backups frequentes e mantenha os sistemas atualizados. Amea\u00e7as como worms exploram falhas e vulnerabilidades em softwares e produtos.<\/p>\n

No caso de empresas, tenha em mente que a grande maioria dos ataques de malware ocorre por e-mail. Portanto, para melhorar a sua prote\u00e7\u00e3o e seguran\u00e7a, ainda seria importante usar uma solu\u00e7\u00e3o de prote\u00e7\u00e3o de e-mail, como um Secure Email Gateway<\/strong><\/a>. Lembre-se de que muitos ataques por e-mail acontecem por meio de golpes de phishing e spear phishing, geralmente usando t\u00e1ticas de engenharia social<\/strong><\/a>.<\/p>\n

Al\u00e9m disso, para finalizar, voc\u00ea precisa trabalhar a quest\u00e3o da conscientiza\u00e7\u00e3o em ciberseguran\u00e7a dentro da empresa, a chamada security awareness. \u00c9 importante que os funcion\u00e1rios entendam os riscos, conhe\u00e7am as amea\u00e7as e como elas agem. Ao fazer isso, voc\u00ea pode mitigar falhas humanas que poderiam comprometer toda a opera\u00e7\u00e3o da empresa.<\/p>\n","protected":false},"excerpt":{"rendered":"

V\u00edrus e worms s\u00e3o algumas das amea\u00e7as cibern\u00e9ticas mais cl\u00e1ssicas que existem. Eles s\u00e3o programas maliciosos que infectam computadores e dispositivos, causando caos e desordem. Para come\u00e7ar, \u00e9 importante saber que frequentemente os termos v\u00edrus e worm s\u00e3o usados de forma intercambi\u00e1vel, mas n\u00e3o significam a mesma coisa. V\u00edrus e worms s\u00e3o tipos de malware […]<\/p>\n","protected":false},"author":4,"featured_media":6992,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,37],"tags":[],"class_list":["post-6991","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-educacao"],"yoast_head":"\nQual \u00e9 a diferen\u00e7a entre worm e v\u00edrus? - Gatefy<\/title>\n<meta name=\"description\" content=\"V\u00edrus e worms s\u00e3o golpes que prejudicam empresas, infectando computadores e causando viola\u00e7\u00f5es de dados. 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