[cryptography] attacks against bitcoin
iang at iang.org
Sun Jun 12 09:12:08 EDT 2011
On 12/06/11 8:16 PM, Eugen Leitl wrote:
> How safe is the bitcoin cryptosystem and the communication network
> against targeted attacks?
It depends on what the intention or objective of the attack is. And
that depends on the threat actor.
For example, a phishing threat actor would be looking to steal money.
Whereas the state actor would be looking to figure out who is doing
what, to attack out of band. A competitor would look to attack the
reputation, by e.g., disruption to reliability or mud flinging. A
retailer / consumer would look to dump liability. Insiders would look
to extract rents.
Each of these interests from diverse parties result in different
attractivenesses to different threat scenarios, many of them
uncorrelated. Some of the scenarios and assets can be protected
("mitigated") by tech/crypto, but typically most cannot, and require
To go any distance on this, you'd rapidly end up doing a major risk
analysis, a lot of work.
The alternative is to start from the classical CIA, etc. The problem
with that is it that it is someone else's threat model, not yours. You
really don't want to discover who that someone is after you've built
your system, it'll so ruin your appetite.
More information about the cryptography