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The hackers are seeking an even 100 Bitcoins to unlock these public service systems, which currently equates to around $73,000.

How are they seeking it?

Hackers infiltrating private networks for Bitcoins is not a new or recent occurrence

yeah but what does that mean to infiltrate a private network? And what are they doing by infiltrating? Start new convo at top reply: https://steemit.com/crypto/@ithinkican/re-sergey44-san-francisco-subway-is-free-to-use-after-ransomware-attack-hackers-sought-bitcoins-20161128t172921377z

Bitcoin works on a public Blockchain, so the payment, if made, could be tracked to a wallet. However, a mixing or laundering device for Bitcoin could be used to throw authorities off the trail.

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