It effects all pools and all algorithms
how do you know for sure? pooler patched litecoin already befor 
Topic: Attention ALL Stratum pool Admins! - page 2. (Read 5035 times)
It effects all pools and all algorithms
Do you know if this affects litecoin pools
Here is problem: https://github.com/MPOS/php-mpos/issues/1938
this might explain why someone was mining anime at 800MH a while back, people assumed it was a huge botnet.
Very good of you to post this. I have been mining there and got cheated as a result of this.
The mining these days is tough enough without jerks like that.
Also, great work by whomever got the cheater to TALK!
He couldn't keep from bragging about his crimes just like most criminals!!
The mining these days is tough enough without jerks like that.
Also, great work by whomever got the cheater to TALK!
He couldn't keep from bragging about his crimes just like most criminals!!
Update: To those whom are looking for the fix, you can PM CHAOSiTEC https://bitcointalk.org/index.php?action=pm;sa=send;u=223182 and he'll/she'll set you up.
This week on the Darkcoin thread a fellow started posting screenshots of massive hashrates (400+MH/sec) using just a 4770k(Don't remember the exact model#) CPU.
Through PM he revealed to me (and others) he was exploiting abug in the Stratum protocol faulty implementation of the stratum protocol
Here is a few quotes from the thread:
As I'm fat and lazy to the point of having that annoying fat-finger problem where I keep accidentally typing 4+ keys at a time, I'm not going to spend more time on this post, heres the Darkcoin thread link(Just goto page 428): https://bitcointalksearch.org/topic/anndash-dash-dashorg-first-self-funding-self-governing-crypto-currency-421615
This doesn't just effect Darkcoin pools, it likely effects any pool using Stratum (If configured improperly) Let me know if this sounds like a known bug/issue(Out of curiosity) Thanks!
This week on the Darkcoin thread a fellow started posting screenshots of massive hashrates (400+MH/sec) using just a 4770k(Don't remember the exact model#) CPU.
Through PM he revealed to me (and others) he was exploiting a
Here is a few quotes from the thread:
Quote
Ok, to summarise, without disclosing too much info for others to try on other pools:
that guy with the huge "mining speed" was using a weakness in the stratum code, i noticed a weakness in the way the pool got the shares
and set defences up to prevent that kind of cheating, in reality he did not have that kind of mining power, and his shares wasn't worth anything to the pools overall progress. if you look at all the blocks discovered, why did his miner not discover ANY blocks at all, we should have been getting loads of blocks with that kind of speed, so i investigated, together with evan we set up a fix, now, next time he tries, the system will automatically ban him for a week. he tried connection through a proxy but already he was unable to get that kind of speed that he had at first.
so that tells me it works as it should.. i also banned his ips from the server. and disabled automatic payout from his account.
that guy with the huge "mining speed" was using a weakness in the stratum code, i noticed a weakness in the way the pool got the shares
and set defences up to prevent that kind of cheating, in reality he did not have that kind of mining power, and his shares wasn't worth anything to the pools overall progress. if you look at all the blocks discovered, why did his miner not discover ANY blocks at all, we should have been getting loads of blocks with that kind of speed, so i investigated, together with evan we set up a fix, now, next time he tries, the system will automatically ban him for a week. he tried connection through a proxy but already he was unable to get that kind of speed that he had at first.
so that tells me it works as it should.. i also banned his ips from the server. and disabled automatic payout from his account.
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Re: cpu hashrate
« Sent to: sippsnapp on: March 11, 2014, 06:44:56 PM »
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I run through mining proxy with a changed code. it denies automatic difficulty adjustment on pool stratum server, assign to each share variable hash raws [not unfeigned] thus stratum server is incapable to make up authenticity of this shares. i have always calculated at 0 diff and got all shares accepted, earnings respectively
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« Sent to: sippsnapp on: March 11, 2014, 08:50:38 PM »
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added several extensions while compiled from 1.3 version in open source
i tried with different algos and at now proxy works on X11, groestl, qubit and sha256d.
saying clearly sha256d is not so useful as 500-1000GH guys play. on sha256d i have 80 iterations per second each pick up a low diff share at speed 48000KH. Running 30 CPU is equal to 115GH
if you are interested and there are other engaged people i can start a new topic with this on mind and share proxy for small donate although pulling out this in public would be risky as this is still cheating
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Re: cpu hashrate
« Sent to: sippsnapp on: March 11, 2014, 06:44:56 PM »
« You have forwarded or responded to this message. »
Reply with quoteQuote ReplyReply Remove this messageDelete
I run through mining proxy with a changed code. it denies automatic difficulty adjustment on pool stratum server, assign to each share variable hash raws [not unfeigned] thus stratum server is incapable to make up authenticity of this shares. i have always calculated at 0 diff and got all shares accepted, earnings respectively
Report To Admin
hrt
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Activity: 27
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Trust: 0: -0 / +0(0)
Re: cpu hashrate
« Sent to: sippsnapp on: March 11, 2014, 08:50:38 PM »
« You have forwarded or responded to this message. »
Reply with quoteQuote ReplyReply Remove this messageDelete
added several extensions while compiled from 1.3 version in open source
i tried with different algos and at now proxy works on X11, groestl, qubit and sha256d.
saying clearly sha256d is not so useful as 500-1000GH guys play. on sha256d i have 80 iterations per second each pick up a low diff share at speed 48000KH. Running 30 CPU is equal to 115GH
if you are interested and there are other engaged people i can start a new topic with this on mind and share proxy for small donate although pulling out this in public would be risky as this is still cheating
As I'm fat and lazy to the point of having that annoying fat-finger problem where I keep accidentally typing 4+ keys at a time, I'm not going to spend more time on this post, heres the Darkcoin thread link(Just goto page 428): https://bitcointalksearch.org/topic/anndash-dash-dashorg-first-self-funding-self-governing-crypto-currency-421615
This doesn't just effect Darkcoin pools, it likely effects any pool using Stratum (If configured improperly) Let me know if this sounds like a known bug/issue
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