There is a persistent and fairly believable rumor going around that a significant amount of the NSA exploits are for sale. To convince potential buyers that they have the goods, the sellers have apparently dumped a ±250MB package of 3-year old exploits and implants for firewalls.
Looking at the descriptions Mustafa Al-Bassam extracted from the dump, it seems plausible that at least these firewall exploits are from a government outfit like the NSA or GCHQ based on the terminology and the typical codenames like “WOBBLYLLAMA”, and the kind of firewalls targeted.

Regardless whether this is the real deal (and whether more than just these firewall exploits are up for grabs), this, in my view highlights the main problems with seeing offensive hacking as as the best defence:

• Backdoors and exploits are often single-use: using them as attacker is risky, as your target may be recording network traffic and recover the attack. This was also explicitly mentioned by Rob Joyce, the head of the NSA’s Tailored Access Operations (TAO) group, i.e. the NSA hackers whose toys are apparently now for sale. Or mishandling a spearfish and lose your nation state quality three 0-days on iOS to Apple, an expensive mistake as a full weaponised remote rooting of iOS is easily $100.000+ value.
  As an aside, their 2007 hardware toy catalogue leaked some time ago, a fun read for people like me.
• Amusingly, the NSA actually does this eavesdropping to get other organizations’ offensive hacking tools. There are some convincing theories that this ‘leaked exploits sale’ is actually one of the other organisations (China and Russia have been mentioned) getting back at them.
• Somewhere in these offensive organizations there is a weapons cache of these exploits, and it just takes is one disgruntled employee with access to it and the desire to leak it. After all, it is these hackers’ full-time job and passion to break in and out of highly secure environments, and they have all the tools for this. (This is the most likely explanation).
• Once the attacks are out, others can also use it against you! The NSA has the story that “NObody But US” (NOBUS) can exploit these things, and use that as an argument not to inform the American companies whose products are at risk in this way. So now, Cisco (and other) firewall vendors are scrambling to make a bug fix (which takes a few days to weeks), and actually may impact other products too.
  Then the users of these firewalls have to actually deploy the bug fix (which they’ll be reluctant to do for reliability reasons, if the users even know that the bug fix exists, taking another few days to many months), and all the while savvy and assertive attackers can hack these firewalls at their leisure.

I still have this naive hope that these blowups will change policy for these organizations to lean to the defensive more. Realistically though, they’ll double down: both hide their exploit development better and come down even harder on leakers and whistleblowers.

And of course thus continues the arms race, making us all less secure in the long term for a short term gain. Sigh.

Your friendly professionally paranoid,

Wouter

P.S. this may of course just be a disinformation campaign or a fundraiser. One never knows… (until ±30-50 years later when the documents get declassified)