Same question (as already mentioned on above comments), what kind of QT wallet coins you were using?
If BTC, i will suggest you to using hard wallet or electrum wallet.
For electrum :
1. What is Electrum?
2. Creating a new wallet
3. Using Electrum
4. Enabling a full list of addresses
5. Notes
For more infromation :
Electrum wallet is one of most favorite non-custodial bitcoin wallets. This wallet is light, high trusted, and has advanced features that some low-quality bitcoin wallets don't have.
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Read more, to have more fears on fake, phishing Electrum wallets, and being more careful.
[Warning]: Another Electrum Phishing site on the loose
⚠⚠️⚠~Beware on active phishing Electrum websites~⚠⚠️⚠ (Collection list updated)
Electrum vulnerability allows arbitrary messages, phishing