The safety of your bitcoin depends on the person that has that bitcoin, if you're irresponsible at how you store your keys and seed phrases not having any backup that's not stored in multiple formats and you click a lot of suspicious links all the time and you download stupid stuff from shady websites, you're likely to be an easy victim for hackers. Hackers or black hat hackers prey on people that are bad at their online security and they try and find an exploit in your system so they can steal something or make your daily life inconvenient so the more irresponsible you are with your bitcoin then you're more likely to be a target by this people that have nothing better to do than steal from other people online, be responsible and don't be one of the many victims of these hackers.