I received a tiny BTC deposit in my wallet recently. I don't know where it came from and I hadn't sent or received to or from my wallet in about 2 weeks before the deposit. Could this be something to be concerned about?
Should be advertising spam or anything like that. See the transaction in blockchain if there are some comments regarding that tx. Services often do that even in the past, and I can't see why they're doing such a thing. It's kinda ineffective and clogs the network and the receivers' wallet.