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| Image via CrunchBase |
E-commerce site eBay is asking users to change their password after a cyberattack compromised a database containing encrypted passwords. (May 21).
From AP news.
Defending The Republic, Not some Democracy, and enjoying some of life's rewards along the way.
Showing posts with label PayPal. Show all posts
Showing posts with label PayPal. Show all posts
Wednesday, May 21, 2014
EBay Asks Users to Change Password After Breach
E-commerce site eBay is asking users to change their password after a cyberattack compromised a database containing encrypted passwords. (May 21).
Friday, April 25, 2014
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| The bitcoin logo (Photo credit: Wikipedia) There is no greater point of weakness in Bitcoin than a 51% attack. A fifty-one percent attack can shut down the network. This video discusses all the attack vectors available to an attacker. And there are many, even worse, the devastation available is catastrophic. While a 51% attack doesn't appear to offer a lot of financial gain, history is not just made up of rational actors. James goes through Transaction Denial of Service, Selfish Mining, Monopoly Mining and Double Spending, finding fault with proposed patches and solutions. It is not pretty. As Gavin Andresen says, if someone was able to run a 51% attack "that would be bad". We agree. It would be very bad. At the end of the video we discuss protocol changes that would make an attack much more difficult. We highlight Proof of Stake as a fallback algorithm. The biggest advantage is that POS provides a MUCH higher cost to the attacker for perpetrating such an attack. That, would be good. In part one, we go through a cost analysis of the current hardware needed to launch a successful 51% attack to get a better picture how much it might cost. Unfortunately, the numbers are lower than expected, and most of the previously published values come in three to fifty times higher than actuality. In part two we will talk more about what an attacker might be able to do (double spending is not the worse tool at their disposal) and we prod at some possible solutions. Stay tuned |
Wednesday, February 19, 2014
Coinbase - No Easier Way To Get Started With Bitcoin
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| The bitcoin logo (Photo credit: Wikipedia) |
Are you looking to buy, sell, send or receive bitcoins? Do you want a full featured wallet without all the techy feel? Well, Bloomberg's Businessweek said it best, "there is no better on-ramp to the bitcoin world than Coinbase." And we agree. Usually, with our normal videos we cover just one feature or one idea, but because Coinbase is so easy to use, we can do a bunch. In this video we are going to open an account on Coinbase, send bitcoins to email addresses and bitcoin addresses, receive bitcoins and yes, we're even going to buy and sell some BTC. Amazing.
Even though we will move slowly, chatting the whole way there will still be time left for discussing the pros and cons of the Coinbase system (one that is likely to be imitated around the world. But, we must a agree with Bloomberg, and it leaves us to wonder -- how great it would be if every country had a Coinbase? Enjoy.
https://coinbase.com/
Bigest problem with Coinbase? Well for us, who enjoy learning how bitcoin works, Coinbase keeps us too far removed from the mechanics and the technology. If you're the type who needs to be in full control of your money (you keep your gold in a hole in your back yard) well again, Coinbase isn't for you.
Welcome to WBN's Bitcoin 101 Blackboard Series -- a full beginner to expert course in bitcoin. We hope you enjoy. And remember the official WBN launch is coming up : March 1st, 2014.
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