I received an unauthorized deposit in my account

Any member of the Waves network can create their token and distribute them to other participants in the Waves platform. 

Someone doing it to attract attention to their token, someone doing it to draw attention to their LPOS pool. Some are doing it just for fun or spamming network.

Beware of unverified assets. Trading and dealing with unverified assets may result in total loss of your money. 

Only assets from this list List of Verified Assets, and having a name in their title are verified by Waves.

We do not give any advice on how to work with no-name assets because some of them can be fakes (BTC/Ethereum and so on).