Have any SPV users lost money because they accepted forged bitcoins? I'm making a list of real-life examples of occasions where bitcoins were lost to various known attacks. One of these known attacks is that lightweight (SPV) wallets can't verify whether a transaction only spends UTXOs (a requirement full nodes enforce) so lightweight wallets can be tricked into accepting bitcoins that don't really exist.

Of course, only a dishonest miner would confirm that transaction, making the attack expensive if confirmations have to be involved.

Does anyone know of a real-life example of a user who lost money to this attack, either involving an unconfirmed transaction or a confirmed transaction?  I'd prefer an example from Bitcoin, but examples from altcoins are welcome too.
I run simplecoin.cz|sk|pl|eu bitcoin exchange. We use different wallets and we made 10k+ transactions. We lost some bitcoins. Most of it was human errors. Some bitcoins were lost when transactions took days to confirm during network flooding. We encountered some double spend transactions (which did not confirm)

On other hand we never lost bitcoins when transaction had one or more confirmations. 

I'm not sure if spv wallet can be fooled when transaction has confirmation already. We trade 5k$ almost every day, our conclusion is to wait for confirmation and know your customer.

There's also another risk in accepting even very small unconfirmed transaction and spending it to another customer, because like this you create whole tree of double spends which will never confirm, so you lock your funds for couple days until this toxic stuff gets pruned from memory pool. You also need to resend all this transaction again, it's paid by your time and customer happiness in the end.