[ic] Malicious DDoS attack causing interchange to fail Extent of problem

DB db at m-and-d.com
Thu Aug 7 20:39:38 UTC 2025


I have been using Cloudflare for this on their free plan. I have a 
script that checks the server CPU load, and if above a threshold, sets 
Under Attack mode to on for 3 hours via and API call.Works pretty well 
and costs nothing.

DB

On 8/7/25 2:45 PM, davideth--- via interchange-users wrote:
> Checked the usertrack log that was cleared and restarted 5 Aug 2025 ( 3 
> days ago ).
> 
> 
> I log VIEWPAGES to usertrack, to see what customers look at but ...
> 
> there was 2.2 million lines in 3 days, 99 percent were 1 time accesses I hav 
> to pages  VIEWPAGE =  .....  and the pages included pages that are not 
> normally accessible.
> 
> That is about 700,000 accesses a day ( averaging 480 pages a minute or 8 
> pages a second )  while the normal number of visitors is between 20 to 
> 40 a day.
> 
> because of this, it is often 20 seconds up to 2 minutes or longer for a 
> page to load for a legitimate user. ( Note also that this is for 1 site 
> of 80 on this server )
> 
> I sorted the file by IP in a spreadsheet and there was many that only 
> accessed 1, 2, or 3 pages in the 3 days period.
> 
> First, I would go broke using something like Recaptcha or cloudfare. 
> Just can not afford.
> 
> Would really appreciate some help and this is important to update in 
> interchange because sooner or later this sort of malicious attack might 
> happen to other Interchange sites.
> 
> 
> David
> 
> 
> 
> 
> 
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