Protégez vous des menaces informatiques présentes partout dans le monde !
Restez à l’écart des sites / programmes malveillantes
Qu’est ce qu’un virus informatique ?
C’est un programme (ou autres) malveillant dont l’objectif principal est de perturber le bon fonctionnement d’un appareil ( souvent un ordinateur) . il se transmet et se propage d’appareil en appareil tel une maladie informatique.
Attention : Dans la mesure où le virus peut accéder à des données personnelles sensible, il peut poser un vrai problème de cybersécurité à prendre au sérieux, dans la sphère privée et professionnelle.
Comment se transmet un virus informatique ?
Pour se répandre, le virus informatique (ou malware) s’immisce au sein de programmes et de logiciels légitimes ou apparemment bénins. Cela lui permet de s’installer à l’insu de l’utilisateur. Il peut aussi se propager suite à : • une pièce jointe dans un e-mail • un téléchargement de logiciels ou de fichiers • depuis un support physique externe (clé usb, disque dur externe,…) • via un site web infecté • grâce à un clique effectué sur un lien malveillant • et bien plus encore … !
Quels sont les différents types de virus ?
• Virus du secteur d’amorçage
Il s’agit d’un virus qui peut prendre le contrôle de votre ordinateur lors de son démarrage, et endommager le système. Heureusement, c’est un virus relativement simple à éviter, puisqu’il se propage la plupart du temps par une clé USB infectée ou par la pièce jointe d’un e-mail.
Virus de script Web
Ce virus utilise le code de certains navigateurs et pages Web. Il peut infecter votre système si vous vous rendez sur la page d’un site Web malveillant, ou suite à l’ouverture de liens, d’images, de vidéos ou de publicités sur votre navigateur.
Browser hijacker
Pouvant être traduit par “pirate de navigateur”, ce virus détourne votre navigation en vous redirigeant vers des sites Web malveillants.
Virus résident
Ce type de virus s’installe dans votre RAM, la mémoire de votre système informatique, et entre en action à tout moment. Particulièrement sournois, il peut se cacher dans de nombreux endroits, et même dans les fichiers d’un antivirus.
Virus à action directe
Ce virus n’entre en action que lors de l’utilisation d’un fichier infecté. Du fait de sa présence ciblée sur un type de fichier, il est facile à éliminer.
Virus polymorphe
Le virus polymorphe est difficile à intercepter, du fait qu’il change de code à chaque exécution du fichier infecté. Il peut donc facilement passer dans les mailles de l’antivirus utilisé.
Virus infectant les fichiers
Ce type de virus infecte certains fichiers exécutables du système. Ils endommagent les fichiers systèmes et ralentissent les programmes.
Virus multipartite
Ce virus peut infecter votre système en différents points, se propageant dans l’intégralité du système suite à l’exécution d’actions non-autorisées sur le système d’exploitation.
Virus de macro
On retrouve principalement ces virus lors de l’ouverture de documents infectés, s’agissant la plupart du temps de pièces jointes d’e-mails malveillants.
Virus de réseaux
Ces virus se déplacent sur les connexions réseau et peuvent se répliquer grâce à des ressources partagées.
• Votre page d’accueil est différente (sans changements de votre part) • Il y’a beaucoup de pop-up (fenêtre contextuelle) qui apparaissent et vous dérangent • Envoie d’e-mail ou de commande non exécutée • Ralentissement conséquent sur la rapidité ou la performance de votre ordinateur • Activités inhabituelles • Présence de programmes inconnus • Et bien d’autres encore …
Quelles sont les manières de se protéger ?
Il est le plus souvent possible de supprimer un virus avant qu’il ne fasse des ravages sur un ordinateur, à condition de rester attentif aux symptômes et de choisir la méthode la plus appropriée :
Si possible, restaurer complètement l’ordinateur en le réinitialisant. (Attention à bien sauvegarder vos données avant)
Un scan de l’ordinateur, si vous avez le moindre doute, un scan fait par un anti-virus permet d’en avoir le cœur net, à condition que l’antivirus soit à jour. Un fois le scan terminé, l’antivirus envoie un rapport sur les menaces détectées. La plupart des antivirus propose dans la foulée de bloquer les éléments les plus problématique. Pour certains, il faut avoir souscrit à la version premium. Le processus s’arrête là dans la plupart des cas.
Utiliser une clé USB ou un disque dur de secours en cas d’infection grave, empêchant l’ordinateur de s’allumer, ou au contraire, pour éviter que le virus ne se déploie complètement dans un ordinateur infecté. Dans ce cas, il faut recourir à ce type de support pour scanner le contenu de l’ordinateur via un autre ordinateur sans avoir besoin d’allumer le premier. Le plus souvent, cette méthode permet de supprimer le virus sans avoir besoin d’allumer l’ordinateur. La clé USB ou le disque dur de secours peut généralement être fourni par les éditeurs d’antivirus.
Méthode manuelle : pour certains virus particulièrement sournois, c’est la seule façon de nettoyer l’ordinateur. Elle est réservée aux utilisateurs ayant de l’expérience et de solides connaissances en informatique.
L’utilisation d’un anti-virus et ou d’un VPN peut-être nécessaire.
N’hésitez pas à lire notre article sur les VPN (Cliquez-ici) ou bien sur l’anti-virus Nod32 dont nous sommes partenaires officiels avec ESET ! (Cliquez-ici)
En cas de virus, n’hésitez pas à nous demander conseils et aides ! Nous pouvons même faire le maximum pour récupérer vos données en cas de perte ! (et non de vol)
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In this way, how can the Yingjiang troops, which rely heavily on supplies, not lose At this time, if there is an amphibious landing ship, it will be different Wang Xuexin said The amphibious landing ship can easily climb up the shallows with supplies, and even be used as a car on the shore and inside the island, transporting ammunition and troops directly from the warship.
Or How are you Jinsui Army, not only can you receive food from the common people, but you can also distribute money and equipment from above, I can t even envy you, little brother Brother Yunlong was joking.Company Commander Zhu Wang Xuexin handed Zhu Zhenjiang a cigarette and said, I heard that you robbed your subordinates Dou Zi gave it to you, if you don t believe me, ask Sleepless Nights? Discover the Best Sleep Aids for Adults Dou Zi Zhu Zhenjiang took the cigarette and lit it.
Now they have found it, that is, they added a bunker in front of the gun Introduction tower.Wang Xuexin s experience surprised the general counsel.
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Garcia nodded, flipped through the document again, and sighed You are right, Perris We need to start the research and development of this equipment immediately, even if we don t have enough rifles The reason is obvious, this grenade launcher can Provides considerable fire support for rifles, especially on squad level units.
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We are the people s army. If we don t put people s strong over the counter pain meds lives first, we will What s the point of fighting this battle Li Yunlong sighed bitterly, thinking to himself This Zhao Gang is a man with a pen, how could he know the pain of holding a gun.You don t need too much thrust to push it. And the sound of the engine powered by the bag will be much lower than that of a car engine It s best to land ashore, and Sleepless Nights? Discover These Simple Hacks to Get Your Zzzs Back! you should also consider carefully at the landing point whether the opposite bank is hard or soft.
It is more about considering the tasks assigned by the superiors and how to complete them independently
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Ying Jiang has this technology
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Therefore, Mao Xiong urgently needs individual anti tank equipment like a rocket launcher.all belong to this situation, which can only be thought of when encountering specific difficulties.
Sun Erwei even hoped to borrow the stubborn army s car to transport these rifles and ammunition.This bombing tactic is called the roulette tactic by the devils.
The latter is indeed the devil s miscalculation. The main reason is that the devils set the imaginary enemy of Zhongtiao Mountain as a stubborn army.I didn t expect that there would be a chance to make a comeback so soon.
Use a car to block a tank, especially on the plains, and you can imagine what will happen.However, before the preparations were completed, a burst of rumbling gunfire was heard from the south, and then the correspondent reported to Li Yunlong Regimental Commander, the devils have begun to attack Li Yunlong looked in the direction from which the gunfire came.
As a member of the Jinsui Army, he had done arms trading before, so he knew this business very well.The reason is that there are two puppet army sentries nearby who are smoking and chatting together.
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What What did you say The chief asked in disbelief Say it again The chief Zhao Gang replied happily The transaction is completed.Sun Erwei was very sensible. He glanced at the document and said, Sorry, Wang I will translate it well Wang Xuexin put the document aside and asked coldly, Why Why Davis seemed to have forgotten what he said.