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Trojan/Compromised/Malware notifications when opening Steam


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Go to solution Solved by Porthos,

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For a while whenever Steam opens I've been getting notifications from Malwarebytes about two IPs being blocked for being compromised and trojans.

Similar notifications blocking the same two IP addresses for Malware appear whenever I launch a Valve game and use the Steam Overlay.

I haven't been able to find much information on the two IP addresses that's related to Steam, but it seems other people have reported one of the two IPs.

I've tried running a full Malwarebytes scan but nothing has been found. Is there anything I can do about this?

1 steam exe.png

2 gameoverlayui exe.png

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I've also noticed that Half-Life 2, Half-Life 2: Episode One, and Half-Life 2: Episode Two have been having Steam Cloud Errors recently.

Not sure if it started around the same time, but if Malwarebytes is blocking an IP then perhaps this is what's being blocked.

hlcloudsync.png

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As for why Malwarebytes blocks Steam, Epic and other games, this is because Steam is Torrent based software, are what are known as Peer-to-Peer (P2P) applications meaning it connects to many different servers/IP addresses (this is how files are downloaded through Torrent based software) and because of this, sometimes Torrent based software will connect to a server that is also known for hosting malicious content.  This is because servers/IP addresses are often shared by multiple sites, so while what you are Playing/downloading through Torrent based software may be perfectly safe, some of the sites hosted on some of the IP addresses that Torrent based software connects to may be malicious.  Such connections are not a threat however, and you may exclude Torrent based software from the Web Protection component in Malwarebytes to stop the blocks from happening without compromising your protection (your web browser and other critical web facing programs will still be fully protected from malicious websites and other malicious content).  To do so, add the game exe to your exclusions using the method described under the Exclude an Application that Connects to the Internet section of this support article.

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