I have to say that AeroFS is a company I've always admired from a distance. They don't raise that much money, they don't make a fuss, and they just keep growing.
Makes them not come off as a fad or BS scheme to get a VC exit on a non-product, yeah? Interesting traits. I hadn't noticed it until you pointed it out and then... what you said might be why I hadn't noticed them lol. I'll add that a tech company operating in stealth or low-buzz mode has the extra advantage of building up quite an income stream before competitors' marketing or legal teams notice. That money helps when either responds to the new threat to their market share.
Some of the best companies I ran into in robust, software engineering are still unknowns. You don't see them or their methods on HN, Reddit, and so on. Yet, they continue to slowly grow and be profitable by word-of-mouth as they deliver results day in and day out. Nothing wrong with advertising but I admire those companies the most.
This is a product that seems to have the right features, is very flexible, and is extremely usable. That's a great combination in INFOSEC. As usual, I assume low assurance methods and plenty 0-days waiting until proven otherwise with rigorous review. Yet, doing a great job on the first part can generate enough revenue to gradually improve on the second part.
I really like the philosophy behind AeroFS and how I get to keep my data on my computers only, but recently the app is taking up more and more RAM. I've seen it creep up to over 1GB until I restart it, and that's only with a 10GB shared folder between 3 machines.
Aside from that, I've never really looked back since deleting Dropbox and my account there.
Hopefully this round of funding brings about some performance improvements :)
Avalon has been our partner from our Series A and has funded some amazing startups like Indix, SkyCatch, Nanigans, CloudKick (YC S09), Chartio (YC S10), and Cloudant (YC S08). As an aside, Rich Levandov, who is on our board, was also one of the founders of Phoenix Technologies, creators of Phoenix BIOS
NHN is not well known in the valley, but it's Naver Corporation (https://en.wikipedia.org/wiki/Naver_Corporation) which is one of South Korea's largest telecoms, and is also the parent company behind the Line messaging app.
We haven't talked much about it in our release, but one of the reasons we partnered with NHN is that there's a lot of need for data sovereignty in EMEA, and NHN is in a position to help us enter the asian markets.