Posts

Hello world!

Image
Hi everyone!  This is my first post here so let's see what is this blog about. On this blog I'm going to talk about technology, specially computing. First of all, what is exactly computing? We consider computing  as any  goal-oriented activity requiring, benefiting from, or creating computers . Computing includes designing, developing and building hardware and software systems. It is achieved by using mathematical formulas called algorithms . In this photo We can see the basic structure of any algorithm: We have an input data, some operations and then a output. For example, an algorithm can solve easily a second degree equation. We have 3 input values and the algorithm can give us as result up to 2 numbers. That's all for today, I hope you have understood everything.  If you have not, you can leave a comment down. I hope to see you soon!

DDoS attacks: How to avoid them

Image
Hey guys, today I would like to explain  how  the DDoS attacks work . That is just a joke, I am going to teach you about what a DDoS attack means. Let's image that you are a telephonic operator. If one person calls you, you can talk him without problems. But now imagine that 10 people is calling you at same time. Yo are going to be very confused because you can't be talking to everyone at same time. So a DDoS attack is very similar to this example. Many users (maybe  bots )  want to talk with the server, but the  server  has limitations, and if there are too many connections the server can fail. If there is a  hacker   attack , a variable amount of  bots will try to connect to the server and disable his  services . This type of attacks can disable webs for a small period of time. I want to tell you a personal anecdote: ~ Last week I was playing League of Legends and suddenly my connection "fell down". I was confused, what ...

Bitcoins: Digital gold

Image
Hey guys, today I want to teach you many interesting things about cryptocurrencies, specially Bitcoin. Do you know what a dolar, a pound or a euro is? It's just a piece of paper or metal where is written a amount. All right, now I'm sure that you have wondered about why we give that importance to that simple thing. Bitcoin's value isn't fixed because the amount of coins that can exist is limited. Now a days, the limit is at 21 000 000 Bitcoins. Now, when I'm writing this post the price of a bitcoin is about 7000€ and  it   will   probably   rise   in   the  future . How Bitcoins works? That's a complex process because a bitcoin is created by an  algorithm.  It's a mathematic formula. And when more bitcoins are generated, the next bitcoins are a bit harder to calculate. So, when more bitcoins are generated, the remainings are harder and more expensive to earn. When someone does a transaction, the data is regist...