In 8 months I had 3 attacks hacking tryes. [2 through scam mails and 1 directly to my computer] I never hide nothing valuable in the computer but is a bit weird]
How likely is that hackers try to hack traders?
Oh boy! Are you really that naive? How should the hacker know in advance that you have nothing important on your computer? And: then your computer will be made a member of a bot-net providing an attack platform, or sending out mass-spam...
They hack everybody. You should protect your computer (firewall etc.), and never open unwanted email-attachments.
And: get rid of Windows because of the many backdoors built into it, and it spying and reporting your files, emails, and your web-visits to sites...
Best thing you can do is switching to Linux.
And use an ad-blocker.
And: ever heard of ransom-ware? Just inform yourself about this newest criminal activity of the bad hackers.
And: they can even place some compromising files on your computer, like child-porn, or terrorist propaganda, or make you look like a mafia-supporter etc... etc...
And for advanced protection: start each program under a fictional user (ie. "Run as ..."), so that each program uses the private home folder of that fictional user...
(because normally each program started by you has access to everything in your home folder... RunAs prevents this...)