I thought I was on a pretty secure computer. I did not visit any questionable sites and by nature a very suspicious computer user who does not open weird emails and links (even when the links are sent by seemingly someone I know since it could be not from them and even when it is, they are not as suspicious as I am ;-) ) and virus-checks every file I download on a computer... and yet a new tool I found (online scan from eset.com) revealed some Trojans...
What do you do to make sure thieves do not steal your bank account information? How do you secure your computer and internet access? Any practices / guidelines / tricks that you find helpful?
Malware can send your files to the thieves, your keystrokes can be monitored and also sent, insecure communications intercepted, there are rootkits that can do pretty much anything and hide from anything, malware removers you might download may end up themselves being a source of malware, etc. I recently started reading on the subject (again) and it's a wild scary world out there.
Here is link I am looking into more recently:
Different approaches to removing malware - Computerworld Blogs
"Don't simply dismiss today's computer exploitations as an annoyance like we did just a few years ago. That was play time; this is serious. ... 99 percent of malware is crimeware designed to hurt you financially."