Original subtitles

‫Now, as I promised you,

‫this course is going to be highly practical.

‫But I also promised that I will not neglect the theory.

‫Now, what we mean by hacking

‫is being able to gain access to a system

‫that you're not supposed to have access to.

‫So for example, logging into an email account

‫that you're not supposed to have access to

‫is considered hacking that account.

‫Gaining access to a remote computer

‫that you're not supposed to have access to

‫is hacking that computer.

‫Reading information that you're not supposed

‫to be able to read, again, is considered hacking.

‫So you can see that there is a large number of ways

‫to hack into a system, and the word hacking

‫can refer to a number of things,

‫but the main concept is the same,

‫gaining access or being able to do things

‫that you're not supposed to be able to do

‫is considered hacking.

‫Now, there are three main types of hackers.

‫We have the black-hat hackers,

‫these are the bad people that hack systems illegally

‫in order to steal money,

‫or to achieve their own illegal goals.

‫The second part of hackers are the white-hat hackers.

‫So this is us, these people use the same techniques

‫used by the black-hat hackers,

‫and they also hack into systems.

‫But they only hack into systems

‫that they have permission to hack

‫in order to test the security of the systems.

‫And finally, we have the gray-hat hackers.

‫These are a mixture of the two,

‫so they'll hack into any system,

‫even if they don't have permission

‫to test the security of the system.

‫But they will never steal money or damage that system,

‫and in most cases, they'll go ahead

‫and tell the administrator of that system.

‫But what they do is still illegal

‫because they test the security of systems

‫that they do not own, or do not have permission to test.

‫Now, one big question that people always ask is why hacking?

‫Why teach or learn hacking?

‫Well, hacking is an existing industry,

‫there are lots of job opportunities for ethical hackers,

‫for people like us, who would go ahead

‫and test the security of systems

‫to make sure that these systems are secure

‫and not vulnerable to black-hat hackers.

‫There is actually a huge demand

‫for ethical hackers these days

‫because of the increased amount of hacking attacks.

‫So we hear on the daily big systems

‫and big companies are getting hacked.

‫Not so long ago, Uber got hacked,

‫and information of more than 56 million users were exposed.

‫So companies like Uber, Facebook, and Google,

‫they hire hackers in order to try

‫and hack into their systems,

‫and tell them where the weaknesses are

‫so that they can fix it.

‫They also have bug bounty programs

‫where they literally ask all the hackers around the world

‫to go ahead and try to hack into their websites

‫and with their web applications, and if they could,

‫they will pay them a bounty for the bugs that they find.