C-CEX.com Trusted, Secure & Friendly Exchange Since 2013. 200+ Alts,USD,Low Fees

[Bitbobb]

criminal scam exchange.

[Saulich_Fedorovich]

Sorry c-cex, but you don't seems to care about bug reports tickets.

Normally, even when you go on coinexchange.io, it's hard to find something vulnerable.
But with c-cex, it's hard to find something protected on client side. For starting, everything is vulnerable to CSRF even with 2FA enabled:

Wanna change the user's chatname of someonelse? It's possible to do it by making cliking a link which trigger a POST to http://c-cex.com/?id=profile&rett=chat_b.
Wanna write a chat message with an account you don't own?  It's possible to do it by making cliking a link which simply works through a GET request.
You hacked the e-mail account linked to a c-cex account? Just make the target user click a link and you'll receive the confirmation link. You also don't need to login to confirm the withdrawal (an other vulnerability combined).

In that case, the only thing protected against CSRF I found is posting limit orders. And even then it's still performed through GET requests.
I also found making someone losing all funds through clicking https://c-cex.com/?id=funds&dump=btc requires an origin matching c-cex.com. Though that’s still possible to hide and trigger the target through a redirect.

There is also their internal captcha systemhttps://c-cex.com/cp.html?s=385353503 which is easy to solve fully automatically through things like IBM Watson or Google Cloud vision with high sucess rates.

There are many ways to bypass users completely and steal funds directly from servers like with the recent attack (though I failed to see the vulnerabilty recently used by the attacker).

The exchange is definitely less secure than Mt.Gox. There are even known bugs used in the past elsewhere that aren't fixed on the exchange (1 task when you are in charge of security is to read the news about recent discovered attacking methods). Maybe they also run outdated third party libraries else too, but that's something to invastigate.
The only thing postive over Mt.Gox is funds are correctly managed manually outside the lack of fund audits: they can't "find" a forgotten wallet like it happened with Mt.Gox since no wallet are susceptible to be forgotten.

In some way, the bugs users are noticing with unexecuted withdrawals or disappearing deposits as well as disabled account is only the top of the iceberg.

[milewilda]

But with c-cex, it's hard to find something protected on client side. For starting, everything is vulnerable to CSRF even with 2FA enabled:

Wanna change the user's chatname of someonelse? It's possible to do it by making cliking a link which trigger a POST to http://c-cex.com/?id=profile&rett=chat_b.
Wanna write a chat message with an account you don't own?  It's possible to do it by making cliking a link which simply works through a GET request.
You hacked the e-mail account linked to a c-cex account? Just make the target user click a link and you'll receive the confirmation link. You also don't need to login to confirm the withdrawal (an other vulnerability combined).

In that case, the only thing protected against CSRF I found is posting limit orders. And even then it's still performed through GET requests.
I also found making someone losing all funds through clicking https://c-cex.com/?id=funds&dump=btc requires an origin matching c-cex.com. Though that’s still possible to hide and trigger the target through a redirect.

There is also their internal captcha system which is easy to solve fully automatically through things like IBM Watson or Google Cloud vision with high sucess rates.

These are indeed serious bypass that you had mentioned but it doesnt really matter at all yet this exchange do already fallen to scam anyone.Im reading once in a while
into this thread.I havent seen any response of OP on whats happening and also reading up continuous complaints about account disabled and lost funds.
Remembering C-cex glory days but they do end up like this after on that 3 months vacation alibi.

[Saulich_Fedorovich]

These are indeed serious bypass that you had mentioned but it doesnt really matter at all yet this exchange do already fallen to scam anyone.Im reading once in a while

Outside this, there are also weak practices like using MD5 based session cookies and don't change it across requests.

into this thread.I havent seen any response of OP on whats happening and also reading up continuous complaints about account disabled and lost funds.

What's happenning? Do you remember how they were hacked in February 2014? Please notice how the last 9 september and the Februrary 2014 are similar (both repeated the same withdrawal several time).
Well it might not be the same guys as in 2014, but I think the hackers just found a variant of the same vulnerability in order to bypass the February 2014 protection which was put after the first attack.

Without C-cex explaining how it exactly happenned. We'll won't know.

Remembering C-cex glory days but they do end up like this after on that 3 months vacation alibi.

What glory days? Trust me, you can be sure even by 2014 security standards, that you wouldn't see GET requests on Facebook or Paypal.
You can be sure those weakness exists since the beggining and aren't the result of a code update.

[BazilOK]

Пoxoдy cocкaмилиcь. SCAM!!

[IconFirm]

@MODS:  Isn't it about time this entire thread was moved to the scam section where it belongs?  This would help stop noob users being scammed any further.

No support.
Customers accounts being closed.
Customers funds vanishing.
No withdrawals.
Missing funds.
Page after page after page of complaints.

[MicroGuy]

@MODS:  Isn't it about time this entire thread was moved to the scam section where it belongs?  This would help stop noob users being scammed any further.

No support.
Customers accounts being closed.
Customers funds vanishing.
No withdrawals.
Missing funds.
Page after page after page of complaints.

Finally something we both agree on!

[pokerowned]

One of the worst exchange i have seen

Bad support and delisting coins without any proper time

Shame on Ccex team

[carlfebz2]

@MODS:  Isn't it about time this entire thread was moved to the scam section where it belongs?  This would help stop noob users being scammed any further.

No support.
Customers accounts being closed.
Customers funds vanishing.
No withdrawals.
Missing funds.
Page after page after page of complaints.

Finally something we both agree on!

Agree on this one too since this thread have been already abandoned maybe this would suit out to be put up on
scam accusations where there are lots of people continue to come here complaining that accounts been blocked
other after another.

Is there any possible action with this?

[KFEHF]

Taкaя жe бeдa,Я HE MOГУ

ПOПACTЬ B MOЙ AККAУHT Увaжaeмый C-cex,

«Пoльзoвaтeль нe нaйдeн или oтключeн aккayнт». Я нe мoгy пoлyчить дocтyп к cвoeй yчeтнoй зaпиcи.
Ecть ли пpoблeмы c мoeй yчeтнoй зaпиcью?

Пoжaлyйcтa, пoмoгитe мнe peшить этy пpoблeмy. 

[pooya87]

what happened to c-cex?
it used to be a decent place to trade despite the shadiness. now it seems to have turned into a full on scam. i tried accessing my account and it says it is not found! did they nuke their own database? luckily i had less than 0.01BTC there but it still sucks to lose that and an exchange that i used from time to time.

[fearfighter]

what happened to c-cex?
it used to be a decent place to trade despite the shadiness. now it seems to have turned into a full on scam. i tried accessing my account and it says it is not found! did they nuke their own database? luckily i had less than 0.01BTC there but it still sucks to lose that and an exchange that i used from time to time.

maybe the 6 months of vacations when no one could withdraw their funds caused c-cex to lose touch with reaaaaaaaallllllllllllllity

[cointron]

Any estimate of how much they stole? I left there 6.5 BTC and 1.5 BTC in alts.-

[pooya87]

what happened to c-cex?
it used to be a decent place to trade despite the shadiness. now it seems to have turned into a full on scam. i tried accessing my account and it says it is not found! did they nuke their own database? luckily i had less than 0.01BTC there but it still sucks to lose that and an exchange that i used from time to time.

maybe the 6 months of vacations when no one could withdraw their funds caused c-cex to lose touch with reaaaaaaaallllllllllllllity

it sounds more like running away to me
c-cex is a business not some hobby to take a 6 months vacation from and not come back. not to mention that it was a 24/7 market which also is global. you can't just shut it down and go have fun!

[zthomasz]

Any estimate of how much they stole? I left there 6.5 BTC and 1.5 BTC in alts.-

ouch!

is there any legal recourse to recover it?

[fearfighter]

what happened to c-cex?
it used to be a decent place to trade despite the shadiness. now it seems to have turned into a full on scam. i tried accessing my account and it says it is not found! did they nuke their own database? luckily i had less than 0.01BTC there but it still sucks to lose that and an exchange that i used from time to time.

maybe the 6 months of vacations when no one could withdraw their funds caused c-cex to lose touch with reaaaaaaaallllllllllllllity

it sounds more like running away to me
c-cex is a business not some hobby to take a 6 months vacation from and not come back. not to mention that it was a 24/7 market which also is global. you can't just shut it down and go have fun!

a year ago they took a 3 month vacation and i couldn't withdraw any coins. 90 days later they did it again, fortunately i had already withdrawn  all coins by then.

3 months on, 3 months off, rinse and repeat

I don't see how they stay in bizness

[pogadaev]

Dear system administrators!!! TELL me how can I enter the address https://c-cex.com/t/api_pub.html?a=getmarketsummaries without DDOS test? my service that sends requests https://calcminer.info / IP 176.120.29.140

[cointron]

Any estimate of how much they stole? I left there 6.5 BTC and 1.5 BTC in alts.-

ouch!

is there any legal recourse to recover it?

I have no idea. I've searched for information, everywhere they talk about Mt.Gox, Bitfinex, Bitgrail, but nothing about C-Cex. In addition to taking everything, they have deleted the databases, they disappeared completely. It would be interesting to know how much they took and if a lawsuit can be initiated.-

[wincoinofficial]

https://c-cex.com/i/c-cex_logo.svg

https://c-cex.com

BTC, Ethereum, NXT, NXT assets, Omnicore, Omnicore properties friendly exchange

Our exchange is very fast and easy to use. We have very effective and responsive support team.
It is possible to get fast support by tickets or in chat.

http://c-cex.com/i/security.png

Security 2FA (e-mail, sms, google authenticator), e-mail confirmations, SSL, DDoS protection, anti-theft protection, hot/cold storage.

   

http://c-cex.com/i/fast.png

Fast deposits / trades / withdraws You do not have to wait hours to see Your deposits. They shown in realtime and credited instantly after needed confirmations. BTC needs only 2 confirmations!

   

http://c-cex.com/i/merchant.png

Merchant service C-CEX merchant service let's You to sell Your goods and services for any Bitcoin RPC compatible coin we have. https://c-cex.com/?id=merch

http://c-cex.com/i/referral.png

Referral program Earn 5% from our BTC earning for all referrals trades fee 3 levels deep.

   

http://c-cex.com/i/trade.png

Trade between any coin pair Choose from 100+ coins to trade for BTC/USD and between it.

   

http://c-cex.com/i/transfer.png

Transfer funds instant directly between accounts without comission We have a mechanism to instantly transfer any funds between accounts via "C-CEX codes".

   

http://c-cex.com/i/supp.png

Active Dev/Support team We have very responsive support team - You can contact us via skype or "Support" section.

   

http://c-cex.com/i/webcam_b.png

Webcamera QR-code reading support You can easy scan Your wallet address or C-CEX code from paper / smartphone / tablet or other computer using You integrated or plugged web camera.

   

http://c-cex.com/i/chat.png

Chat live with fellow traders Find much of useful information from our chat box.

   

http://c-cex.com/i/coins.png

Vote for new coins to be added We have voting system for adding new coins. You can vote free or by depositing small amount of BTC.

You can deposits and withdraw USD with low commission using many options. (Payee gate with lots of options. Visa/MC deposits possible, PayPal withdraws included)!

Our USD vouchers (C-CEX USD codes) are traded on following fiat exchanges:

https://www.xmlgold.eu
http://money-change.biz

Trading fee: 0.2%

Welcome and have a good trades!

RU thread: https://bitcointalk.org/index.php?topic=420342.0

Twitter: https://twitter.com/CryptoCurrEncyX (main news source)
Facebook: https://www.facebook.com/pages/C-CEXcom/1453754041506448
Google Plus: https://plus.google.com/u/0/110094298275211579915/posts

Hi C-Cex Team, can we know an official channel to get in touch with you or we can connect throught email?

Thanks

[wklalen]

hi admin ccex
hi admin why account disable
i dont have problem with exchange
my account user name=robocop
email = inot.syah@gmail.com
20minutes ago i can still trade and now i can not log in again