9. The
clipboard virus scammed. In that case LoyceV explained that (
https://bitcointalk.org/index.php?topic=5190776.0) :
How it works
1. You select a Bitcoin address, and press CTRL-C.
2. The malware changes the address to an address owned by the hacker/scammer.
3. You press CTRL-V and lose any funds you send.
Even if you check part of the pasted Bitcoin address, chances are the first few characters are the same, and you still won't notice the address was changed.
Ever since I read that LoyceV thread, I've been very careful about the address when sending BTC. To be honest I didn't care about that before because I didn't know a scam like that existed. I just copy and paste and send the Bitcoin to the wallet, but now I take my time to check through the address if it's the same.
Recently I wanted to send BTC to a friend. We've already discussed previously and he said he was going to need some Bitcoin from me that he'll pay back later. I agreed and asked him to let me know when he needed it.
So this week I received a WhatsApp message from him. The message was his Bitcoin address, with a second message "Let me know when you've sent it". Since we've already discussed it I wanted to transfer the coin immediately but I stopped and decided to call him and confirm. I may be chatting with someone else, maybe someone who stole his phone or whatever. So I called him and asked if I should send it and confirmed that it was him before I sent it.
I know it doesn't mean much but the single fact that I now take my security very seriously since joining this forum is a big WIN.