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 site suffered another DDOS attack 
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Posted on: Thu Oct 10, 2019 9:19 am




Posts: 3323
Joined: Thu May 12, 2011 11:58 pm
 site suffered another DDOS attack
Much like the previous one: viewtopic.php?f=5&t=1157

The site was again swamped with random forum requests (600-1000 in a few minutes),
at about 1.38am CEST (so 7.38pm EDT for example),
causing the server to run out of memory, which crashed the database server.

This explains the "can't connect / mysql" errors people were seeing.

This attack again was from China.


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Posted on: Fri Oct 11, 2019 11:14 am




Posts: 3323
Joined: Thu May 12, 2011 11:58 pm
Post Re: site suffered another DDOS attack
This is why I took the forum offline overnight last night.. [mellow]


update: I added some new "DDOS mitigation" features,
let's hope this helps [namaste]


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Posted on: Sat Feb 12, 2022 2:17 pm




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Joined: Thu May 12, 2011 11:58 pm
 Re: site suffered another DDOS attack
There is a lot of "behind the scenes" work too, fortunately lately not against DDOS attacks.

Getting many more "dummy accounts" during the past year or so, about 40-50 a month,
almost exclusively from Russia for some reason.


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Posted on: Sat Feb 12, 2022 4:25 pm




Posts: 695
Joined: Wed Apr 16, 2014 9:20 pm
Post Re: site suffered another DDOS attack
Please help me understand.

I dont agree with DDOS attacks.

I can comprehend a motive when other malicious operators think they can demand ransom to stop the attack.

However, this is a site that produces puzzles.
There are less than 10 000 users.
Patrick is not raking in the money by keeping the rest of us entertained with puzzles.

Patrick shouldn't (shouldn't) pay a ransom to the malicious operators.

So what is the point of doing this?

In other words, I do not understand the motivations of evil people.


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Posted on: Sat Feb 12, 2022 4:32 pm




Posts: 3323
Joined: Thu May 12, 2011 11:58 pm
Post Re: site suffered another DDOS attack
eclipsegirl wrote:
Please help me understand.


Yes, at least with DDOS attacks there is the ransom option.

No idea what people want with the hundreds of fake accounts though.

(it's not like you can post on the forum with an account with zero points)


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Posted on: Sat Feb 12, 2022 4:47 pm




Posts: 695
Joined: Wed Apr 16, 2014 9:20 pm
Post Re: site suffered another DDOS attack
This site is apolitical.

I assume posts that cross into politics or disinformation can be removed. I dont think any long term participant would complain.

it is a joy for many of us to be able to share our joy of puzzles with out dealing with the other things occurring in real life.


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Posted on: Sun Feb 11, 2024 11:02 pm




Posts: 3323
Joined: Thu May 12, 2011 11:58 pm
Post Re: site suffered another DDOS attack
Another DDOS hit on the forum, again from China, sadly [crying]

I noticed it because the size of the daily backup file went down instead of up (!)
(it really should always increase).

This was because there were many forum sessions from China that happened to expire
(went from about 43000 sessions to about 5000 in one day).

I blocked the offending IP address, but I'm assuming the site will be attacked from
new sources later [glare]



pnm wrote:
Much like the previous one: viewtopic.php?f=5&t=1157

The site was again swamped with random forum requests (600-1000 in a few minutes),
at about 1.38am CEST (so 7.38pm EDT for example),
causing the server to run out of memory, which crashed the database server.

This explains the "can't connect / mysql" errors people were seeing.

This attack again was from China.


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Posted on: Sat May 25, 2024 2:08 pm




Posts: 3323
Joined: Thu May 12, 2011 11:58 pm
 Re: site suffered another DDOS attack
And another one, again from China [cursing]

A pretty big DDOS attack running for about 24 hours since last night (May 24, 2024), causing the load on the server to increase tenfold..

I've blocked the source address range of the attack, and am hoping they won't switch to a different range [glare]


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