Decentralization is finally back, after the failed attempt of Bitcoin

Bitcoin has long lost its appeal to “casual” miners. Not mentioning profit, even the for-fun part is gone, as it’s almost impossible to get even a penny (or “satoshi”, in Bitcoin terms) nowadays without any specialized mining equipment. Bitcoin designers chose SHA256 to be the cornerstone of its PoW algorithm mostly because of its war-proven security, but they apparently did not foresee that the very elegance of the algorithm could one day threaten the decentralization effort they all put in — it is too easy to compute. It’s quite daunting just to think of that nowadays the four largest mining pools control more than 60% of the total computation power of the Bitcoin network. How safe is it? Certainly not as safe as it’s designed to be.
Continue reading Decentralization is finally back, after the failed attempt of Bitcoin

Security, broken with a quest for convenience

I feel compelled to write about something I just found out yesterday. It was about a service that CloudFlare proudly touted as an innovation on web security technology — Keyless SSL. It allows CloudFlare, as a CDN provider, to “securely” serve content for the origin, with the origin’s own TLS certificate, but without requiring the origin to give up its private key. At first I was pleasantly surprised. If something can really be done it will with no doubt boost the security and even redefine how CDNs work today. Not a lot of information can be found about this new service on CloudFlare’s home page, since it’s only open to enterprise customers and costs a lot (5 grand a month), but Google always knows what I’m looking for. After some Googling around I quickly landed on one of CloudFlare’s blog posts which reveals the technical details behind their Keyless SSL service, which can be found here.
Continue reading Security, broken with a quest for convenience

It all started with humblebragging…

I used to be an avid user of social media, and I truly believed that social media brought people together. When I was first introduced to social media back in high school, it was a pleasant surprise to find most of my childhood friends there, and it was really great to feel connected again (though most of us only lived several blocks apart). Back then social media was still a relatively informative place, since everybody was a student of some sort and had almost nothing to worry about except for the homework and exams (so these were also what we posted all the time…). Things only started to go awry a couple years ago, when people grew further in real life but inexplicably closer on the Internet.

Continue reading It all started with humblebragging…