FYI:
From:
[email protected] [mailto:
[email protected]] On Behalf Of Lee Sawkins via groups.io
Sent: Tuesday, April 01, 2025 10:25 AM
To:
[email protected]Subject: Re: [CC-User] Bogus DX Spot Attacks on Clusters
What happened this weekend was that tens of thousands of bogus spots were entered into the cluster system. These spots were all for SSB. Since there are no SSB skimmers available yet, all of these spots appeared to be manually entered, but in fact they were generated by a computer.
Normally the human entered spots never are more than 60 per minute. During the weekend spots that were bogus were entered at many thousands per minute. These spots were targeting specific active calls. These spots were giving different frequencies on all contest bands for each bogus spot. These spots had same DX call and a different spotter call and different originating cluster call. This caused many nodes to get bogged down trying to process all this data. Some crashed. Others got hopelessly behind and continued sending data to my cluster which dropped the spots because they were too old. Millions of spots were being dropped.
My cluster limits the number of spots to 60 per minute. This limited bogus spots but also good spots in each minute. When bogus spots stopped, then all the new good ones got through.
Lee VE7CC
