I saw some brothers in the square talking about this matter, so I checked it out. This is indeed a sandwich attack, which is what we refer to as a trap. Those who usually complain about losing a few U, please don’t tell me this is a trap. Let’s put it another way, could it be price fluctuations? The trap is meticulously planned and executed just to take this little bit of your money?
Those saying that the ZKJ token icon is different, this is a coin on Ethereum or something, can’t you see the gas fee is BNB? As for the different icons, that’s because I used different tools to check, no further explanation.
Let me explain in detail below why it is determined to be a sandwich.
The transaction hashes of both the victim and the beneficiary occurred at block height 50571497. See the figure below.
Your loss is exactly someone else's profit. There is preliminary suspicion that someone manipulated the pool's ratio, causing the exchange to be abnormal. This has only occurred in this one block, and I believe there will definitely be other victims in other blocks suffering from the same sandwich attack.
I personally believe it is still a slippage issue. Even if the manual setting was 0.1%, it is possible that the system modified it to another ratio during the exchange, which gave the sandwich an opportunity. Of course, this is my suspicion, and everyone must pay close attention to slippage and MEV switches when trading. Don’t ignore these issues just because you are trading frequently.