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I'm using Chromium 49.0.2623.108 on Ubuntu 15.10, and I have noticed for the last few days that, every day, Chromium wastes almost all my bandwidth during a long part of the day (around 10 Mbps).

I have checked the Chromium Task Manager (Shift+Esc), and it doesn't show anything. I have then run the command sudo nethogs enp2s0 and it shows the process 31752. Upon checking the Chromium Task Manager again, I can see that process 31752 is the main Chromium process.

Then I run sudo iftop -i enp2s0, and it shows that the IP address from where Chromium is downloading data is 168.62.188.213, which belongs to Microsoft Corporation.

But the real problem is that I have no idea of what exactly is causing this, or what is being downloaded! There are no active downloads in the browser either.

admirabilis
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One thing that comes to mind is using Chrome's in browser tools. You can try to navigate to Chrome://net-internals/#events which will show you the network events. You can also navigate to other tabs through the drop-down on the top to poke around. With out further information, cannot really tell what is wrong.

1283822
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The 168.62.188.213 address is a server hosted on Azure, which is owned by Microsoft but usually rented out to others.

In fact, it looks like it's Bitcoin-related.

Have you checked your extensions? It sounds like a rogue extension. Try disabling extensions one at a time until this usage stops, then you'll know which one caused it. You can speed up the search by disabling half at a time.

Bob
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