I'm not sure that there is currently an organized attempt to bring down bitcoin. From what I understand, the Mt. Gox hacking was an attempt to steal bitcoins.
That being said, there will most definitely be an organized government effort to bring down bitcoin. Probably won't happen for another couple of years because the government is slow and reactive rather than proactive, but it will happen as long as bitcoin continues to grow in popularity and use. The people who run our government can't stand that something might be outside of their control. Nothing makes them angrier.
You can bet your bippie on that! Not just the Government per se, but the financial Oligarchy [which really owns/runs the Govt.]. They also have access to supercomputers or just huge corporate computer networks, that can (as I understand it) if more powerful than the total of all connected BTC users be used to steal the entire lot of 'em. Alternatively, they could just hire expert black hacker types to build bots, traps and trojans to upset the system. Many a President and Administration were assassinated/overturned due to attempts to control the FED [or other high finance policy].....watch out! It's coming...the only question is WHEN! While BTC will never be as powerful as the FED, the idea could become as strong, and an incentive to move away from the financial institutions that run the ****ing planet and are the main backers of the intel organizations and MIICC. Again. Forewarned is forearmed.
Yeah...this kind of conspiracy theorist nonsense isn't helping anything.