Topic: Blockchain.info misreports origins (Was:Swiss University jumps into mining game) - page 2. (Read 21285 times)
September 28, 2012, 12:16:50 PM
University computers, bitcoins, Its gotta be Kevin Mitnick!
September 28, 2012, 12:15:38 PM
I don't know what I'm talking about, but: could there be a connection between BitThief and a massive mining botnet?
I don't think so. From a quick look, Bitthief just seems to be an exploit of the BitTorrent protocol. It is interesting however that bitthief is present on port 80 of the Zurich IP (along with an unobfuscated version). The only connection that I see is that bitthief is an exploit in a P2P protocol (BitTorrent) and bitcoin is another example of a P2P protocol.
September 28, 2012, 12:11:17 PM
Instead they're running at about 8-9% of the network, and hoping to get 6 blocks in a row to reverse a transaction (double spending)?
All that to reverse a transaction?
Wouldn't it be easier for them to just make a purchase with credit card and then report the card as having been stolen?
September 28, 2012, 12:03:09 PM
Would it help to block connections from this IP to our clients, and if so - how to do it?
September 28, 2012, 11:58:45 AM
I don't know what I'm talking about, but: could there be a connection between BitThief and a massive mining botnet?
September 28, 2012, 11:54:11 AM
So they have around 9% network hashing power...
How massive of a supercomputer would they have to use to get 2 TH/s? And does anyone know if they HAVE a supercomputer at that university?
How massive of a supercomputer would they have to use to get 2 TH/s? And does anyone know if they HAVE a supercomputer at that university?
This was posted in 2009, but states that CSCS is run by the university and they had the "Cray XT5"
http://www.ethlife.ethz.ch/archive_articles/090623_top500_nsn/index_EN
The top 500 list of supercomputers currently lists CSCS as #57 with the "Cray XE6".
http://www.top500.org/list/2012/06/100
September 28, 2012, 11:50:01 AM
actually, this is really annoying now, since there are 9 of them
206.12.16.155
129.74.74.20
128.6.192.156
129.130.252.140
82.130.102.160 (on about 30 or 40 different ports)
137.99.11.86
130.253.21.123
147.102.3.117
129.130.252.141
whenever one connects, i get flooded with the ping fail
206.12.16.155
129.74.74.20
128.6.192.156
129.130.252.140
82.130.102.160 (on about 30 or 40 different ports)
137.99.11.86
130.253.21.123
147.102.3.117
129.130.252.141
whenever one connects, i get flooded with the ping fail
http://bgp.he.net/ip/206.12.16.155 -->BCnet
http://bgp.he.net/ip/129.74.74.20 -->University of Notre Dame
http://bgp.he.net/ip/128.6.192.156 -->Rutgers University
http://bgp.he.net/ip/129.130.252.140 -->Kansas State University
http://bgp.he.net/ip/82.130.102.160 -->Swiss Federal Institute of Technology Zurich
http://bgp.he.net/ip/137.99.11.86 -->University of Connecticut
http://bgp.he.net/ip/130.253.21.123 -->University of Denver
http://bgp.he.net/ip/147.102.3.117 -->National Technical University of Athens
http://bgp.he.net/ip/129.130.252.141 -->Kansas State University
...
Could these entities be working together to attain high hash rates?
Open proxies. Open the IP's on your browser and you'll see.
September 28, 2012, 11:46:28 AM
actually, this is really annoying now, since there are 9 of them
206.12.16.155
129.74.74.20
128.6.192.156
129.130.252.140
82.130.102.160 (on about 30 or 40 different ports)
137.99.11.86
130.253.21.123
147.102.3.117
129.130.252.141
whenever one connects, i get flooded with the ping fail
206.12.16.155
129.74.74.20
128.6.192.156
129.130.252.140
82.130.102.160 (on about 30 or 40 different ports)
137.99.11.86
130.253.21.123
147.102.3.117
129.130.252.141
whenever one connects, i get flooded with the ping fail
http://bgp.he.net/ip/206.12.16.155 -->BCnet
http://bgp.he.net/ip/129.74.74.20 -->University of Notre Dame
http://bgp.he.net/ip/128.6.192.156 -->Rutgers University
http://bgp.he.net/ip/129.130.252.140 -->Kansas State University
http://bgp.he.net/ip/82.130.102.160 -->Swiss Federal Institute of Technology Zurich
http://bgp.he.net/ip/137.99.11.86 -->University of Connecticut
http://bgp.he.net/ip/130.253.21.123 -->University of Denver
http://bgp.he.net/ip/147.102.3.117 -->National Technical University of Athens
http://bgp.he.net/ip/129.130.252.141 -->Kansas State University
...
Could these entities be working together to attain high hash rates?
September 28, 2012, 11:45:28 AM
actually, this is really annoying now, since there are 9 of them
206.12.16.155
129.74.74.20
128.6.192.156
129.130.252.140
82.130.102.160 (on about 30 or 40 different ports)
137.99.11.86
130.253.21.123
147.102.3.117
129.130.252.141
whenever one connects, i get flooded with the ping fail
206.12.16.155
129.74.74.20
128.6.192.156
129.130.252.140
82.130.102.160 (on about 30 or 40 different ports)
137.99.11.86
130.253.21.123
147.102.3.117
129.130.252.141
whenever one connects, i get flooded with the ping fail
http://bgp.he.net/ip/206.12.16.155 -->BCnet
http://bgp.he.net/ip/129.74.74.20 -->University of Notre Dame
http://bgp.he.net/ip/128.6.192.156 -->Rutgers University
http://bgp.he.net/ip/129.130.252.140 -->Kansas State University
http://bgp.he.net/ip/82.130.102.160 -->Swiss Federal Institute of Technology Zurich
http://bgp.he.net/ip/137.99.11.86 -->University of Connecticut
http://bgp.he.net/ip/130.253.21.123 -->University of Denver
http://bgp.he.net/ip/147.102.3.117 -->National Technical University of Athens
http://bgp.he.net/ip/129.130.252.141 -->Kansas State University
September 28, 2012, 11:44:53 AM
Except the Swiss and Greek IP's all others are PlanetLab(Codeen) public proxies. 
September 28, 2012, 11:39:05 AM
actually, this is really annoying now, since there are 9 of them
206.12.16.155
129.74.74.20
128.6.192.156
129.130.252.140
82.130.102.160 (on about 30 or 40 different ports)
137.99.11.86
130.253.21.123
147.102.3.117
129.130.252.141
whenever one connects, i get flooded with the ping fail
206.12.16.155
129.74.74.20
128.6.192.156
129.130.252.140
82.130.102.160 (on about 30 or 40 different ports)
137.99.11.86
130.253.21.123
147.102.3.117
129.130.252.141
whenever one connects, i get flooded with the ping fail
http://bgp.he.net/ip/206.12.16.155 -->BCnet
http://bgp.he.net/ip/129.74.74.20 -->University of Notre Dame
http://bgp.he.net/ip/128.6.192.156 -->Rutgers University
http://bgp.he.net/ip/129.130.252.140 -->Kansas State University
http://bgp.he.net/ip/82.130.102.160 -->Swiss Federal Institute of Technology Zurich
http://bgp.he.net/ip/137.99.11.86 -->University of Connecticut
http://bgp.he.net/ip/130.253.21.123 -->University of Denver
http://bgp.he.net/ip/147.102.3.117 -->National Technical University of Athens
http://bgp.he.net/ip/129.130.252.141 -->Kansas State University
...
September 28, 2012, 11:32:21 AM
this is why we need asic mining rigs, cheap asic mining rigs.
Yes, definitely part of the reason. The other part being, preventing a malicious entity from developing their own ASIC and taking over the network because no one else has them. September 28, 2012, 11:32:04 AM
https://bitcointalksearch.org/topic/whats-the-mhash-on-this-thing-cant-find-it-anywhere-112889
The new Mira Supercomputer does 8 petaflops. I did some quick napkin calculations, and I estimate that gets ~600GH/s.
I agree. But do they have access to said supercomputer? And even if they did, it's only 1/4 of the estimated hashing power it is implied that they somehow have access to.The new Mira Supercomputer does 8 petaflops. I did some quick napkin calculations, and I estimate that gets ~600GH/s.
September 28, 2012, 11:28:49 AM
It seems like Bitthief is not related to Bitcoins:
http://www.disco.ethz.ch/members/cdecker.html
"Tampering with Distributed Hash Tables"
This Cdecker: https://bitcointalksearch.org/user/cdecker-49 ?
September 28, 2012, 11:26:23 AM
this is why we need asic mining rigs, cheap asic mining rigs.
September 28, 2012, 11:26:04 AM
IIRC, this is the first attempted attack with source on a multi-million computing facility.
Will they succeed, or fail miserably ?
Will they succeed, or fail miserably ?
September 28, 2012, 11:25:53 AM
https://bitcointalksearch.org/topic/whats-the-mhash-on-this-thing-cant-find-it-anywhere-112889
The new Mira Supercomputer does 8 petaflops. I did some quick napkin calculations, and I estimate that gets ~600GH/s.
I agree. But do they have access to said supercomputer? And even if they did, it's only 1/4 of the estimated hashing power it is implied that they somehow have access to. The new Mira Supercomputer does 8 petaflops. I did some quick napkin calculations, and I estimate that gets ~600GH/s.
September 28, 2012, 11:22:01 AM
https://bitcointalksearch.org/topic/whats-the-mhash-on-this-thing-cant-find-it-anywhere-112889
The new Mira Supercomputer does 8 petaflops. I did some quick napkin calculations, and I estimate that gets ~600GH/s.
The new Mira Supercomputer does 8 petaflops. I did some quick napkin calculations, and I estimate that gets ~600GH/s.
September 28, 2012, 11:21:14 AM
So they have around 9% network hashing power...
How massive of a supercomputer would they have to use to get 2 TH/s? And does anyone know if they HAVE a supercomputer at that university?
How massive of a supercomputer would they have to use to get 2 TH/s? And does anyone know if they HAVE a supercomputer at that university?
I guess that they are using AWS/some other cloud and redirecting the traffic to mask it.
EDIT, nevermind.
September 28, 2012, 11:19:26 AM
Oooh, here's more:
According to that wiki page, it looks like that university has 604.52 teraflops of supercomputing power available to them. For free for research purposes.
EDIT: Sorry, I'll stop double-posting. Found this:
So, going backwards, 604 / 12,700 = 0.475. In other words, their 604 TFPS of supercomputers could only mine 48 GH/s, far lower than the numbers we are actually seeing would imply.
Quote
CSCS' main function is a so-called National User Lab. It is open to all Swiss researchers and their collaborators, who can get free access to CSCS' supercomputers in a competitive scientific evaluation process. In addition, the centre operates dedicated computing facilities for specific research projects and national mandates, e.g. weather forecasting. It is the national competence centre for high-performance computing and serves as a technology platform for Swiss research in computational science. [3]. CSCS is an autonomous unit of the Swiss Federal Institute of Technology in Zurich (ETH Zurich) and closely collaborates with the local University of Lugano (USI).
http://en.wikipedia.org/wiki/Swiss_National_Supercomputing_CentreAccording to that wiki page, it looks like that university has 604.52 teraflops of supercomputing power available to them. For free for research purposes.
EDIT: Sorry, I'll stop double-posting. Found this:
Quote
Bitcoin "FLOPS" computation on bitcoinwatch
bitcoinwatch.com/ calculates PFLOPS of bitcoin network as: take number of Hashes/second (Terahashes/s of SHA256) and multiply by 12700 to get a "Single-precision FLOPS estimate". One hash calculation is considered as 6350 32-bit integer operations, and each integer operation is considered equal to two single-precision flops. Source of constants is: http://forum.bitcoin.org/index.php?topic=4689.0 (with reference to bincoinwatch's admin). Actual bitcoin mining contains no (or almost no) floating-point calculations.
bitcoinwatch.com/ calculates PFLOPS of bitcoin network as: take number of Hashes/second (Terahashes/s of SHA256) and multiply by 12700 to get a "Single-precision FLOPS estimate". One hash calculation is considered as 6350 32-bit integer operations, and each integer operation is considered equal to two single-precision flops. Source of constants is: http://forum.bitcoin.org/index.php?topic=4689.0 (with reference to bincoinwatch's admin). Actual bitcoin mining contains no (or almost no) floating-point calculations.
So, going backwards, 604 / 12,700 = 0.475. In other words, their 604 TFPS of supercomputers could only mine 48 GH/s, far lower than the numbers we are actually seeing would imply.
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