No. What you are missing is that there was a one-time window of opportunity for attackers due to the ASIC tech not having been deployed on the Bitcoin network 10 months ago. But now that the network is rapidly adopting ASICs, the network speed has been doubling every month for the last 10 months, so this window is quickly closing...
For example, if an attacker wanted to attack Bitcoin, they would have to get funding today, develop or acquire an ASIC design, build and develop a ~150 meggawatt datacenter, all within the next 6 months, to have a chance to attack the network.
Details: at 2.2 Phash/s today, 6 months from now we should be around 2.2 * 2^6 = ~150 Phash/s. The best ASICs, 28nm KncMiner, are approximately 100 ~Ghash/s and 100 Watt each. So the attacker would have to build 150 Phash/s of these to clearly outperform the network: that is 1.5 million chips at 150 meggawatt total. And to plan for a potential delay of 30 days, the attacker would have to build not 150 Phash/s but 300 Phash/s of ASICs to attack the network. 3 million chips. 300 meggawatt datacenter. For comparison, Facebook spent $210 million on their 28 meggawatt Prinevill datacenter. So a 300 meggawatt datacenter would probably cost $2 billion. Therefore I doubt such an attack against Bitcoin would be even within NSA's capabilities. They can't even get their Utah datacenter to run correctly and it has been delayed by more than 1 year: http://www.pcworld.com/article/2052960/nsa-data-center-suffe...
For example, if an attacker wanted to attack Bitcoin, they would have to get funding today, develop or acquire an ASIC design, build and develop a ~150 meggawatt datacenter, all within the next 6 months, to have a chance to attack the network.
Details: at 2.2 Phash/s today, 6 months from now we should be around 2.2 * 2^6 = ~150 Phash/s. The best ASICs, 28nm KncMiner, are approximately 100 ~Ghash/s and 100 Watt each. So the attacker would have to build 150 Phash/s of these to clearly outperform the network: that is 1.5 million chips at 150 meggawatt total. And to plan for a potential delay of 30 days, the attacker would have to build not 150 Phash/s but 300 Phash/s of ASICs to attack the network. 3 million chips. 300 meggawatt datacenter. For comparison, Facebook spent $210 million on their 28 meggawatt Prinevill datacenter. So a 300 meggawatt datacenter would probably cost $2 billion. Therefore I doubt such an attack against Bitcoin would be even within NSA's capabilities. They can't even get their Utah datacenter to run correctly and it has been delayed by more than 1 year: http://www.pcworld.com/article/2052960/nsa-data-center-suffe...