Lots of fake websites
Lots of bad backdoored programs and e-mail fishing scams
If you visit a website check the address to make absolutely sure your on the real website.
Trust no one!
I guess, hackers can attack anytime. That's why we need to be cautious 24/7. We never know when we will experience hacking. They are like roaring lions waiting for someone to devour. We better be watchful and careful.