Comment: You seem overly paranoid

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In reply to comment: Not "computer science"... (see in situ)

You seem overly paranoid

About a small time operation like Silk Road.

Even if ISPs hand over information willingly to law enforcement, if the data is encrypted (such as via HTTPS), it does them little good unless they are willing to apply several supercomputers to the task for a number of months. Gleaning IPs usernames, passwords etc. becomes a non-issue when the initial message is already encrypted, the same as making sure your connections made from wi-fi hotspots are encrypted.

You give too much credit to packet shaping. It's been tried many times by many ISPs and it has only caused the affected applications to change, double-encrypt or randomise the format of their packets. You are mistaken to believe that the bitcoin system is that fragile.

For the FBI to run a successful Silk Road store, they would have to mail out real drugs, wait until they receive positive feedback (so they appear legit to other buyers), then capture the buyer. A buyer who maybe spent $50 on a baggie of weed, who may have smoked it all before leaving feedback, or might not leave feedback at all. How many man-hours would be spent waiting in that scenario, for a drug offence that may not even land the suspect any jail time? The FBI doesn't want to go after buyers, or sellers. They want to go after those running the Silk Road itself and so far you haven't given any indication as to how that would be accomplished.

Of course nothing is an "impenetrable undefeatable secure system", but for someone who says they have a degree in computer engineering, you are certainly giving the government a great deal of credit and casting doubt on the intelligent engineers actually designing these anonymous systems. It is indeed a battle, and unlike yourself, I'm not picking winners or losers just yet.