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421  Economy / Scam Accusations / Re: Replaced transaction. Double spending attack? on: August 20, 2022, 05:03:41 PM
After getting spammed for hours with infinite messages and missed calls which were mostly made of threats about bad reviews I go back home and open my wallet to see that there is nothing in there.
This should have been a red flag. In peer to peer trades, you should never feel rushed or harassed by the other person. Whenever you do, it is usually because they are trying to pull something shady. In this case, he was rushing to get you to send your half of the trade before his transaction confirmed, so he could replace it with RBF and steal your money. However...

Mutual characteristics between the 2 accounts.
I am not convinced that any of the characteristics you have listed are enough to make a definitive link between these two accounts. It seems to me that there is a not insignificant chance that you have just stolen $500 worth of bitcoin from an innocent third party.

There's much more than that going on in this case. Say for example, how high are the chances that someone will pay a 5% fee for a crypto <-> crypto exchange when they can use KuCoin to do that for a much lower fee? There's just too many things going on with this one. I am still verifying the transactions tho and I am going somewhere with it, like the scammers address being connected with the second persons address. Still needs much work but will post results when I'm done.
422  Economy / Scam Accusations / Re: Replaced transaction. Double spending attack? on: August 20, 2022, 04:59:32 PM
There is nothing you can do on a protocol level to prevent someone else from performing this kind of attack on you, so you have to tell the other parties to send first next time (and then you yourself don't send until it confirms), or use escrow.

Oh yeah, will definitely keep my eyes open for this type of scam.
423  Economy / Scam Accusations / Re: Replaced transaction. Double spending attack? on: August 20, 2022, 12:20:05 PM
How did you lose money? Did you pay him while your incoming transaction had 0 confirmations?
The part where his first transaction didn't confirm should have been a dead giveaway: it was double spent.

That is exactly what happened, because I delayed the transactions for multiple hours I decided to do it fee free and as fast as I could when I had access to my wallets, that is why I did not wait for it to be confirmed. I got good news tho, please read the section at the bottom of the original post.


The scammer probably abused the RBF feature.
If a transaction has been flagged as RBF, (as long as it is unconfirmed) it can be replaced by a new transaction spending a same input and having a higher fee rate and higher absolute fee.

In your case, the fee rate used for the original transaction was 1 sat/vbyte and it was replaced with a new transaction using the fee rate of 3 sat/vbyte.
In the replacement transaction, the scammer sent the fund to his/her own address.

Thank you. After doing some more investigating this seems to be the case, I wasn't sure at first but your reply confirmed it for me.
424  Economy / Scam Accusations / Replaced transaction. Double spending attack? on: August 20, 2022, 10:50:40 AM
I'm not sure what's going on here so I am posting this topic. I lost some money but as long as we can save someone else from falling for the same scam it's all good.

Yesterday I had someone hit me up on Discord asking to have their Bitcoin exchanged for any other token. I agree even tho the amount was below my minimum. After waiting for a while for the other party to send the Bitcoin I get a phone call and need to go out. About 30 minutes later I get sent this screenshot:



At this point I'm out and can't send what we agreed on back for 1 reason:

1. I have no access to my wallets so I can't see if the other party has really sent the coins.


After getting spammed for hours with infinite messages and missed calls which were mostly made of threats about bad reviews I go back home and open my wallet to see that there is nothing in there.

I let the other party know about it and I get sent the following link: https://mempool.space/tx/c306113746b9cf78d6823ee75260ad311d612f0ae3c145207bccf71b2fdb5e44

At the time the transactions was visible at the page, it later changed to: "This transaction has been replaced by:
e5e783122e3c2dcd3b4ec3b1ed5533fe3b0438512c5597625351d0f108737c7f"

Meanwhile this shows up in my wallet:


Luckily the scammer wasn't smart enough to gain my trust and make 100x that amount.

At this point I'm confused and the most I can make out of this is that this is a double spending attack of some sort.

Now what I'm left with is the following: https://www.blockchain.com/btc/tx/c306113746b9cf78d6823ee75260ad311d612f0ae3c145207bccf71b2fdb5e44

Any suggestion as to what happened is welcome, the amount wasn't huge and I've already made that back twice so fuck the scammers but let's save someone else from falling for the same thing.



EDIT AND MASSIVE UPDATE

Last night I got contacted by a second Discord account under the name of Deon. Offering to exchange their Bitcoin for Litecoin. Below I have attached 2 images, 1 which contains messages from the account that scammed 170 USD out of me and another one which contains messages from the second account aka Deon.





I called out dsadsa on his scam and 2 minutes later Deon hits me up asking for an exchange. Judging by the way these 2 accounts type their messages in I managed to make a connection between the 2 and arrived at one conclusion, these 2 accounts are one and the same person.

Deon has sent me 500 USD worth of Bitcoin and I believe he is trying to gain my trust with his second account so he can play in the higher leagues.

This is absolutely surprising to me.

And here we are:

And again:


Mutual characteristics between the 2 accounts.

- Time of contact.
- Sense of urgency, things like I need it fast, I need it for a friend and so on so they can get me to send before transaction is confirmed at least 1 time.
- Threats about reporting me.
- One dead giveaway was the "min" they would reply with when asked for a txID.
- Another dead giveaway is that dsadsa "tested" me with a 170 USD transfer and Deon just sent 500 USD to a random guy with no escrow (which I offer).
- Another dead giveaway is that both accounts were like "I hope you won't scam me" after allegedly sending what was agreed on.
- Both accounts start with the letter d and when I provoked dsadsa about Deon there was a dead giveaway that he did not want me to make a connection between the two.
- After I told dsadsa he is a fucking idiot for not luring me in and gaining my trust the idiot tried to do just that with a second account.
425  Economy / Currency exchange / Re: Want to Buy BTC on: August 20, 2022, 12:58:15 AM
There was no reason to reply to this old thread in the first place, the OP contacted me on Telegram and never replied after, just another waste of time.
And you did bother reporting back what happened back then? What happened to community spirit?

A clueless new member was asking for the scammer's username. Your warning would have come in handy had he seen your feedback.

I didn't think much of it, there's plenty of people like OP, I can't filter through all of them.
426  Economy / Currency exchange / Re: [H] SKRILL [W] BTC - long term on: August 17, 2022, 03:09:15 PM
What rate are you willing to pay?
427  Economy / Currency exchange / Re: Want to Buy BTC on: August 17, 2022, 09:23:46 AM
There was no reason to reply to this old thread in the first place, the OP contacted me on Telegram and never replied after, just another waste of time.
428  Economy / Goods / Re: Top Quality CBD Oils from Sensimall.com accepting BTC on: August 16, 2022, 07:16:09 PM
Has anyone bought something from the website yet?
429  Economy / Currency exchange / Re: Buying and selling crypto. - Multiple payment methods. - Available Worldwide. on: August 16, 2022, 09:50:38 AM
Update.
430  Other / Archival / Re: 500 € loan urgent on: August 13, 2022, 08:19:45 PM
that's fucking  collateral   

It's not, it's just a picture, what do I do with it? Print it?
431  Economy / Lending / Re: Victim of identity theft sos W 1000-5000 on: August 12, 2022, 09:56:27 AM
Well I’ll politely say you are 110% wrong and if you read the post you would see that I’m awaiting checks from them. I’m sorry you are so high and mighty in ur ignorant assumptions while beating down on someone who’s legitimately just had everything flipped upside down. I’ll pray for you dude, I’ll pray for this world of sick sick misguided know it all ignorant perfect people. Thank you folks. Best wishes.

The only one who's high here is you, high in delusions, thinking some internet stranger will send you thousands of dollars.
432  Economy / Lending / Re: Victim of identity theft sos W 1000-5000 on: August 11, 2022, 07:47:38 PM
Sure what would you like my social? My birth certificate? Location? Signed agreement?

No, financial material. You want 5k, you leave 8k as collateral and then you get it back after you pay what you got + interest.
433  Economy / Lending / Re: Victim of identity theft sos W 1000-5000 on: August 11, 2022, 06:57:14 PM
No collateral, no loan.
434  Other / Archival / Re: 500 € loan urgent on: August 11, 2022, 09:58:27 AM
hello some other collateral !  jewellery 1000 € worth   can take picture


contact me 

That's not collateral.
435  Economy / Lending / Re: Stablecoin lending. - You decide interest. on: August 06, 2022, 10:46:03 AM
Hi Alterra57!
Request for a NO collateral loan
Required USDT Amount: $3,000
Estimated Loan 6 years
USDT Address: TWBLAWLuPs7qzwqMajLgcc5jxyjVGTiUkB

Hey, I can't help you.
436  Economy / Lending / Re: Stablecoin lending. - You decide interest. on: August 06, 2022, 10:37:54 AM
Hallo Alterra57,

As requested via PM , this is my loan application

Loan Amount: 380 Usdt
Loan Purpose: Personal
Loan Repay Amount: 435 Usdt
Loan Repay Date: August 16 or earlier
Type of Collateral: None
TRC20 - USDT address: TFqN1GmbXtQNZu1BsuhrExzpKLszXBfQ4U

Sent 378 USDT, I hope that's not a problem as the 2 USDT was the fee which I completely forgot to calculate.

txID: de89475ccda9fb462ebc2b4cfb3a835c6e2effa17fa71f8c458df67f8a3b4778

Please send back to: TPVwtc2ZEo35QE9MCUciKUqbSfCLUhWT6G
437  Economy / Currency exchange / Re: Buying and selling crypto. - Multiple payment methods. - Available Worldwide. on: August 03, 2022, 02:08:19 PM
Hello! I wanted to say thank you to the person who created this topic. helped me a lot in solving my question on the floor! thanks again and have a nice day!)

I don't understand what you mean  Huh but glad it helped  Roll Eyes.
438  Economy / Currency exchange / Re: EXCHANGING USDT TO BTC OR ETH 1:1 on: August 03, 2022, 02:07:34 PM
Let me know if you want to do the trade with me.



is your offer still valid?

Yes.
439  Economy / Lending / Re: Stablecoin lending. - You decide interest. on: August 02, 2022, 04:24:18 PM
Loan amount: 180$
Loan term (return date): 1 - 08 - 2022
Interest rate:
Return amount (how much will you send back): 200$
Collateral:
Address (where to send if application is approved): TJLzHT2Q6c3raBfJVSKRTGXmdZ8VfAWnvr
Chain: USDT Trc20

Approved. Sent 180 USDT (TRC20). TxID: ef6afde19273447b5871dfadee008a0afb868d67b2660a8d4f84f3e7acad6990

Please return to: TPVwtc2ZEo35QE9MCUciKUqbSfCLUhWT6G
Partial payment of 105.2$ have been sent to the address mentioned above :
https://www.oklink.com/en/trx/tx/47beb63a88c2e17087ae98f6b66231a73155a2e8da94e7dc687c859f2f0d88cd
Please confirm that you have received the payment.

The rest of the amount will be sent next week or sooner as discussed in PM.

Regards

Confirmed. Said amount has been sent into my wallet.

Thank you.
440  Economy / Lending / Re: Loan of about 40 BTC on: August 02, 2022, 11:22:10 AM
Hello

We are looking for a business loan of  40 BTC.  We have four projects planned in the crypto space.

We will payback the loan after 2 years with annual interest rate of 8%

We are completely new to this Lending forum.
 For now looking for inputs how to go about such loan amount. Any help would be appreciated. (E.g. is it better to get loan from a bank?)

Thanks

Collateral?
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