Can a bitcoin be hacked? The question of hacking is the first to come one’s mind when we talk about a popular cryptocurrency like bitcoin and the answer becomes more important when it comes to investing in bitcoins. The answer to this question is beautifully answered by Andreas Antonopoulos who presented a lecture on the bitcoin security, bubble boy and the sewer rat. According to Andreas, all forms of cryptography can be broken and all forms of cryptography are eventually broken. This is a truism.