They are everywhere and you have no idea when or where they will attack you with their extraordinary hacking skills. Luring people is one of their strategies and you should be aware about your assets because bitcoin is not that easy to earn. Some of the hackers can probably came from other countries so that they aren't easy to catch or capture. They also use different IP addresses for the authority to not to track them when they do investigations. Hackers are absolutely professional on that kind of activities so that if your bitcoin was hacked, say goodbye to your investments, you are also responsible with your account, so as soon as possible, become aware and increase your security.