Its no longer news that an ICO in Japan has lost over $400 million to hackers. They promised to pay back investors who invested in their ICO. Thsi is a huge loss. After I read that news, I began to wonder. How safe is Bitcoin and Other altcoins? What measures should we take to avoid being hacked ?
Being a good bitcoin user, maybe we can report someone if we find that user is suspicious enough to be a hacker or potential spy. Maybe the system is safe so that it can detect hackers who wants to infiltrate in the system.