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There are two parts to your question: Blocking: Blocking would entail either nodes refusing to relay transactions paying the crooks, or miners not confirming such transactions. Even if the criminal's ...

It seems that the FBI seized their servers and found the private keys there. If you wanted to know if there was a flaw in Bitcoin software or the protocol, there is no evidence of that. https://...

Yes, it is possible to track addresses used for ransoms, however, it's not quite that simple. Bitcoin is designed to be "censorship resistant", meaning that it is very hard for a third party to block ...

It is a well-known hoax, ignore it. https://blog.malwarebytes.com/cybercrime/2019/02/sextortion-bitcoin-scam-makes-unwelcome-return/ It never hurts to check your antivirus protection is up to date ...

IIRC WannaCry requires you to contact the malware authors (via their built in chat system thing) and then tell them the address that you used to send the payment. Then they will manually decrypt your ...

Can hackers behind the ransomware WannaCry be traced through bitcoin transactions? no, if they are smart enough Is there is central server of bitcoin no where all transactions can be looked ...

Yes BitcoinWhosWho.com allows bitcoin address tags, tracks website appearances and accepts scam reports from the general public.