Questions on: security

As it happened to MtGox this could happen to any other exchange, Bitstamp included. As much as you trust them, technical issues could happen, regulations might pass that wouldn't allow you to withdrawal from these exchanges. Who knows what could happ
You are guessing that even with 51% of the network hashrate, an attacker can still not benefit from invalid transactions. However, the usual idea of a 51% attack is not to create invalid transactions, but to remove valid transactions, as if they had
Generally, no, not until it's too late. A typical 51% attack would look like this: Attacker privately starts mining their own chain, which diverges from the main chain at some block N. Attacker deposits coins to your business, sending them from addre
I guess it depends on what you want to do with it. If for example you're using those 20 bytes as keys in a lookup table, then you should be fine as long as you remember you might get an occasional false positive so you always double check if it reall
In general, there are policies and there are rules in Bitcoin. Every full node works independently to enforce rules by checking each received block, transaction and etc.
There are a lot of people who are hostile to any new crypto-currency, usually because of their vested interest in previous currencies. They tend to audit any new currency's code, looking for things that can embarrass the developers. There's a very go
Duckx, I think you have a good idea. Well for one thing -- using a linux VM is much better for security. You are essentially using your windows machine for browsing the internet / email and your linux machine for only bitcoin banking
How will the lightning network handle lightweight clients? Most steps during the payment process in an LN channel don't actually require full knowledge of the blockchain or even the unconfirmed (mempool) transactions. This is because the transactions
I believe TumbleBit is the most exciting innovation in the Bitcoin space that does not rely on any protocol change, so works with today’s Bitcoin. Bear with me, because it is just a matter of time until you will be able to use it. If you think about