Just looking for some clarification. A while back I received a transaction for 0 Ether sent to my wallet contract which consumed a very small amount of gas (From this address: 0x18788edabbabc203bc7c157518dc4b2d4529f884). Unfortunately I am not very savvy when it comes to smart contracts and I cannot for the life of me figure out what this transaction is all about. I do not recognize the address and when I look it up on etherscan, it would appear that they sent more than a thousand such transactions over the span of about 24 hours. Most are outgoing tx like mine, but every so often a small but significant amount of ether was sent to their account. Can someone help me explain what is going on here? Is this an innocent use case or is something nefarious going on here? No txs ever left my account but I am wondering if I am somehow now more vulnerable because of something they sent to me in a contract or something.
Thanks for any insight you can provide.