Bitcoin Forum

As some of you already know that I unistalled Bitcoin Core and switching to Electrum ...
However I was at my friend's home the other day and while using the internet I saw a message poping on the bottom right of the screen when I saw it it was Bitcoin-qt and the message was from Malwarebytes Anti-Malware asking to exclude the website (the virus was from an IP adress/domain) , I was able to take a screenshot of the IP and I didn't find it on Malwarebyte :/ I just know it started with 91.xxx.xxx


What I'am asking is , why this happened exactly ? My friend is running full node so is it dangerous and the IP was from who exactly ?

Well you definitely did not provide enough information for anyone to asses what might have happened.
You do realize that when running a node your IP is exposed and thus you're vulnerable to various malicious things without using proper security?

I do know that mate , and I guess you are the one who told me on previous threads :) but what are the security measures that should be taken exactly , Anti virus or anti malwares should be enough . for me Im not longer using it but my friend is

for what comes to the informations , to be more specific it's gives something like this (another IP and the path to bitcoin-qt) so I was wondering how dangerous this could be .

http://i.michaelmknight.co.uk/images/2014/02/10/mb2.jpg

Its just informing you that someone tries to establish a connection from the outside to the machine. If the router is setup to forward the port or has uPNP enabled this is how bitcoin core is able to get more than 8 connections. WIth the default settings this should not be an issue to allow as it does not allow someone that access the wallet or even your balance. Its the same kind of connection bitcoin core establishes for the first 8 anyway, it just originates from a different machine.

So most of all it's nothing dangerous and I can keep using it just fine if I understood you right
But in the future should I exclude the websites on Malwarebytes or that would be dangerous or letting them is just fine

It should be fine, yes. Its not a website its just a different computer running bitcoin core. Since these request should come regularly it would probably best to configure malwarebytes in a way that allows bitcoin core in general to accept outside connections (if thats possible).