It can happen when you use centralized wallets or exchanges and they get compromised (hacked), informations can be stolen that can be linked directly to you especially when you don't take precautions while using those platforms like the use of mixers and other precautions measures to increase your anonymity. The only time you're safe when using Bitcoin is when you take control of everything and only use those platforms that aren't centralized. Fiats are vulnerable to scams and hackers, Bitcoin is also vulnerable to those but provided you take the security of your money very seriously you'll be able to eliminate any threat to your finance. We get more scam attack on Bitcoin because it's a decentralized and unregulated currency so no think say just using Bitcoin go save you from all those scams dem wey dey fiats, na only you go hold yourself well to avoid been a victim out of ignorance.
In addition to what my boss has said, using platform that are decentralized you might want to take note of this while using a non custodial wallet with the kind of storage that will be used by you. Try not store you wallet phrases online because it's be vulnerable to attacks as phishing could me made to your mails exposing your wallet phrase stored on it.
Also,your phone could get hacked while using some links and performing other activities leaving it expose to get all kinds of information.
Best choice is to adapt yourself with a cold storage which is way more secure.However, you should take perfect care if your storage device once lost there no recovery for your phrase ,make sure you remember that always or you could make multiple backups and ensuring to keep them safe