Hi friends,
First of all, I am newbie who wants to know about cryptocurrencies and bitcoins for academic purpose only. I am curious about cryptocurrencies like bitcoin are gaining popularity. I have read a few articles and journals regarding bitcoins and their security. To an extent, I felt they were too secure that cyber criminals use them as the medium of transaction. An example is where they asked fro bitcoins an exchange of data recovery after millions of systems were affected by wannacry ransomware. Recently, I came across the security threats of bitcoins and it has surprised me.

I watched a video about botnet attacks on the bitcoin and how easy and likely it is: http://www.storagepipe.com/blog/DDoS-Bitcoin-Brute-Force-Malware/ . It made me realize that they are not as safe and secure as I thought they were. But still, I think that there has to be some kind of security measures that can be taken up to protect from these threats.
What do you have to say about it? I would like to have your words of advice and suggestions about it.
PS: I am not interested in bitcoin transactions. This is just out of curiosity and for academic purpose.