When I was trying to increase my capital in FX, a BITTRA/support representative introduced me to a transfer account, but the account was in a foreigner's name, so I refused the transfer. However, the BITTRA representative told me that they can only introduce foreign accounts for amounts less than 1 million yen, so I had no choice but to transfer money to that account, but no matter how many times I urged them, there was no response regarding confirmation of the deposit until around 11:00 pm on the same day. That evening, I finally got a chat with the person in charge and was told that the account I made the money into was frozen. However, not only that, my FX trading account was also frozen on suspicion of money laundering, and I was immediately instructed to ``transfer additional security deposit.'' This is a malicious tactic where they go out of their way to make large profits after completing large market trades and then freeze not only the transfer account but also the securities account. In addition, regarding the security deposit transfer for which there was an additional transfer instruction, the instructor of the LINE investment course (an ``impersonation'' of former Mizuho Bank employee ``Daisuke Karakama'') sent a photo of his driver's license as a guarantee for the deposit transfer. However, this is clearly a "fake driver's license" (confirmed at the police station). When I pointed out to BITTRA that it was a scam, I was forced to leave the FX investment study group the next morning. After that, after communicating with the BITTRA representative many times on LINE, I managed to get a promise to withdraw the funds from my account without any additional deposit, so I contacted them with my bank account information, but the BITTRA representative stopped contacting me immediately. Moreover, the LINE account of the person in charge of BITTRA was also deleted and it became impossible to contact them. After that, the trading software provided by BITTRA was also disconnected from the server, and the exchange appeared to be closed. Therefore, BITTRA ran away with my account funds. At the same time, the "Karakama Daisuke impersonator" has also become unreachable. Furthermore, when I checked with the police, it was discovered that all the bank accounts I used to make the transfer had been frozen by the fraud victim. Once again, I realized that I was a victim of fraud by a "malicious exchange." I later found out that BITTRA's support person had five LINE accounts and was using them for different purposes, so he seemed to be a repeat scammer. I had the opportunity to speak directly with them once, but the BITTRA representative's voice was male, not female. Even now, I use another LINE account to check my LINE posting history once every 10 days, but BITTRA still hasn't withdrawn the funds from my account. Based on the above, BITTRA can be said to be an organized criminal group.