Unusually high data usage megathread

Thanks for sharing 

There are enough people reporting the counters still going up with their modem disconnected from the cable to make it seem like a comcast error in their tracking system in at least some cases.

Xfinity is also showing 3x higher than normal data usage on my account for the month of September.  In fact, for the first two days of October is says I used 18 GB of data....What ??? I use 18 GB of data in 2 weeks...not 2 days. 

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@jorti299 wrote:
 data spikes are affecting the entire city.

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Yeah.  That's why I'm wondering if it's bot traffic.  The guy a couple back says his neighbors too, kind of implies the same subnet.  Some kind of broadcast or amplification attack with malformed packets.

We need more people that will packet sniff when it happens, and are willing to install a firewall like pfSense on a separate box so the traffic will be apparent in real time.  Right now, I'm not seeing it.  I'm primed to capture though when/if it does again. 

You could just call it a billing mistake, or a database bug, but I suspect it's a bit more complex than that. 

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@RSucher wrote:

It seems my data usage for October has been wiped clean. Before, it was at 168GB when I was really using about 5.9GBs. Now it is back to 0GB. I just hope they will refund me the courtesy month used up in September

 

Proof (Screenshot)

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Same here.  I began tracking my data usage hourly in a spreadsheet this morning.  I got to 106 gigs around 2pm today and it stayed there until 5pm.  I just checked my usage again and it has been reset.

I am still showing an overage for September, which is not acceptable.  There was clearly an issue with how data was being calculated and I should not lose one of my grace months because their systems were messed up.

Thank-you for the update, Jessie.  Its good to see Comcast at least temporarily taking some ownership of the issue.  I noticed, as several others have posted elsewhere, that they reset the October Usage numbers to 0.  Maybe I won't have to switch to a business account from a residential account after all .

It seems my data usage for October has been wiped clean. Before, it was at 168GB when I was really using about 5.9GBs. Now it is back to 0GB. I just hope they will refund me the courtesy month used up in September

Proof (Screenshot)

We're having the same issue, and a lot of others seem to be as well. There's a comment from a Comcast employee at the end of this thread noting that they opened up a ticket about the issue: https://forums.xfinity.com/t5/Your-Home-Network/Terabyte-Internet-Data-Usage/td-p/2741624/page/63

Hoping there is a resolution soon. It's clear something is WAY off on their end.

Same here.

What's confusing is that I did get my courtesy month back (for a day).

Then they took it away again.

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@FlickNFreckles wrote:

Same here.

 

What's confusing is that I did get my courtesy month back (for a day).

Then they took it away again.

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Zero here too.  What Xfinity giveth, I suppose comcast taketh away from the other guy who lost a free month.  Thank you O donor of the free bytes 😛

There is some bot traffic picking up from what I see.  I got two nailing my firewall now.  103.31.12.91 is Japan utility -- some telco, and another one 13.124.235.225 is an Amazon cloud service, Korea based.  SYN Probes.  About 5 hits/sec each.  Probably hijacked virtual machines. 

Does it count as data cap traffic?  Probably. 

Yep.  It's the little things.  Then there's a whole lot of little things and bandwidth is flooded with the max pipe of the little things.

That's how the script kids roll. 

My math is a little fuzzy these days but I think 5 syn probes a second at about 60 bytes per packet would be less than 1 Gb/month of data.  So yeah, it probably counts, but they'd have to ramp it up to be a significant part of your TB.

Our October data was reset as well! Happy to see this resolved.

My October data was reset as well. Here is a history (tabulated) that shows how in September I supposedly  'used'  almost 3x what I normally use:

Monthly Data Usage (Screenshot)