You suddenly got 0.000001 BTC Satoshi in your bitcoin wallet. But you know you haven't sent the funds that you received to your wallet. Or youre not supposed to get this fund from anywhere. This means you are under a dusting attack.
Bitcoin minimum dust attack amount is 546 sat for legacy address, and slightly less for segwit, but not less down to 100 sat which is 0.000001 BTC.
Hackers send very small amounts of tokens or coins to a wallets for dusting attacks. And that keeps the wallet in trucking. Because when a token or coin is sent from one's wallet to someone's address, it becomes very easy to track it. By that tracking, hackers find out the identity of the targeted wallet. When the hacker is able to find out the identity of the person in the targeted wallet, the hacker puts the person in danger with a phishing attack or cyber thread.
You meant cyber
threatDust attack is used to track someone's transactions, but how can it lead to phishing attack? I have not seen any connection yet. But if someone's bitcoin address is known to the attacker, the attacker may want to know about the person more, like knowing the type of exchange he is transferring coins to and also if connected with bigger transactions.
If you're using an exchange wallet, there's nothing to warried about. Just keep your account security hard. In this case 2FA can be used. And update your passwords occasionally. And if you are using a personal wallet and noticed anything about it then you need to create a new address for every transaction.
If you use a wallet with coin control, you have nothing to worry yourself about, just freeze all the dust attack coins, or send it to charity address for donation without revealing your identity.