Similar improvement for my 1080Ti.

The Zencash team thinks the changing of the PoW is lower priority than the super/secure nodes and something else. So there will be no change of PoW in the short term.

This miner is for PoW mining, nothing to do with PoW.

I think by the end of the year, there will be more companies adopting the bitcoin. The price could rise as a result. I will buy some now.

That is true. I think most altcoins including the ETH or Bitcoin Cash are in consolidation phase. The price will rise soon.

As long as the bitcoin keeps on developing and adopt the good points of other coins, it will be the dominant coin.

I heard the Chinese government is trying to stop the exchanges of the bitcoin in its country.

I shall start buying when the price drops another 5 to 10%. That shall be the bottom as there are still demand for bitcoin.

So why the ETC price is so low?

Some people trust the Ethereum.

An article in the financial times thinks the bitcoin is a ponzi.

That is right. If the issurance is not so big, the price will also rise.

That is right. When there is no weekly/monthly hard fork, then we may be able to invest in Ethereum again.

It is possible that they want others to sell the coins so that they can buy more. That happened early this year.

"to resync with geth its highly recommended to use the --fast feature to minimize the effect the spam block transacitons that went on for weeks will have."

If the --fast feature is so useful, why it is not default setting?

What news?

This morning a ton of websites and services, including Spotify and Twitter, were unreachable because of a distributed denial of service (DDoS) attack on Dyn, a major DNS provider. Details of how the attack happened remain vague, but one thing seems certain. Our internet is frightfully fragile in the face of increasingly sophisticated hacks.

Some think the attack was a political conspiracy, like an attempt to take down the internet so that people wouldn’t be able to read the leaked Clinton emails on Wikileaks. Others think it’s the usual Russian assault. No matter who did it, we should expect incidents like this to get worse in the future. While DDoS attacks used to be a pretty weak threat, we’re entering a new era.

 
What Is DNS and Why Does It Make the Internet Break?

Today, half of America’s internet shut down when hackers unleashed a large distributed denial of…
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DDoS attacks, at the most basic level, work like this. An attacker sends a flurry of packets, essentially just garbage data, to an intended recipient. In this case, the recipient was Dyn’s DNS servers. The server is overwhelmed with the garbage packets, and can’t handle the incoming connections, eventually slowing down significantly or totally shutting down. In the case of Dyn, it was probably a little more complex than this. Dyn almost certainly has advanced systems for DDoS mitigation, and the people who attacked Dyn (whoever they are) were probably using something more advanced than a PC in their mom’s basement.

Recently, we’ve entered into a new DDoS paradigm. As security blogger Brian Krebs notes, the newfound ability to highjack insecure internet of things devices and turn them into a massive DDoS army has contributed to an uptick in the size and scale of recent DDoS attacks. (We’re not sure if an IoT botnet was what took down Dyn this morning, but it would be a pretty good guess.)

We are nevertheless getting a taste of what the new era of DDoS attacks look like, however. As security expert Bruce Schneier explained in a blog post:

Over the past year or two, someone has been probing the defenses of the companies that run critical pieces of the Internet. These probes take the form of precisely calibrated attacks designed to determine exactly how well these companies can defend themselves, and what would be required to take them down. We don’t know who is doing this, but it feels like a large nation state. China or Russia would be my first guesses.
This sort of attack is deeply different than the headline-grabbing DDoS attacks of years past. In 2011, hacker collective Anonymous rose to fame with DDoS attacks that pale in comparison to today’s attack on Dyn. Instead of taking out an individual website for short periods of time, hackers were able to take down a major piece of the internet backbone for an entire morning—not once but twice. That’s huge.

If hackers are more easily able to amass extensive DDoS botnets, that means the internet as we know it becomes more vulnerable. Attacking major internet infrastructure like Dyn has always been a possibility, but if it becomes easier than ever to launch huge DDoS attacks, that means we might be seeing some of our favorite sites have more downtime than usual. These attacks could extend to other major pieces of internet infrastructure, causing even more widespread outages.

This could be the beginning of a very bleak future. If hackers are able to take down the internet at will, what happens next? It’s unclear how long it could take for the folks at Dyn to fix this problem, or if they will ever be able to solve the problem of being hit with a huge DDoS attack. But this new breed of DDoS attacks is a scary problem no matter how you look at it.

I have the geth based block chain. If I switch to Parity, can I still use the old chain or need to sync again from the beginning?

That is good news. The Ethereum will also have a big conference in Shanghai in the next few days, as I heard.

The difficulty bomb will start to phase in in November. So I think the Ethereum developers has about 1-2 month to solve the problem.