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Can a virus travel thorugh local network?


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#1 personhood

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Posted 30 April 2017 - 04:49 PM

Hello,

 

At home I have a local network comprised of 5 computers, all windows 10, all members of the same "homegroup", with some folders shared.

 

One of the computers was infected by a virus (according to windows defender). I am going to format that pc and reinstall windows to get rid of the virus but my question is this:

 

Is it possible that the virus had traveled through shared folders/another way and infected other pcs? (assuming no file from the infected computer was run in the other ones, except maybe some documents)


Edited by hamluis, 30 April 2017 - 05:55 PM.
Moved from AII to Gen Security - Hamluis.


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#2 iMacg3

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Posted 30 April 2017 - 05:42 PM

What type of virus was it? (PUP, Fake Security program, etc.)

A virus can go through a local network, but it depends on what type it was.


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#3 quietman7

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Posted 01 May 2017 - 07:22 AM

Ransomware can scan and encrypt whatever data files it finds on computers connected in the same network with a drive letter including removable drives, network shares, and even DropBox mappings...if there is a drive letter on your computer it will be scanned for data files and encrypt them. US-CERT Alert (TA13-309A) advises that many ransomware infections have the ability to find and encrypt files located within network drives, shared (mapped network paths), USB drives, external hard drives, and even some cloud storage drives if they have a drive letter.
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