The thermal printer has stopped printing, what should I do?

Question

Thermal printers

They sent a goojprj qr204 thermal printer. To print in Russian, I downloaded the AClasTool program. I set the utf-8 encoding in Russian, it began to print, but then it stopped responding at all - the light under the button is on and that's it. What to do? Maybe someone has come across something similar. How to reset the printer or reflash?

Answer 1

A very good thing for getting basic concepts about information security is to prepare and pass the Comptia Security + exam.
There are books for preparation, where, just superficially, but very broadly, the main topics of information security are considered, starting with physical security, ending with cryptography and various standards and laws in the field of information security.
We pass all new employees (including student interns) in our company through this exam in the first year of work. Further, everyone chooses a specialization - who wants to do what area.

Answer 2

In any case, it is necessary to start with the discipline Theoretical foundations of information security, then software and hardware information security, then engineering and technical protection, in parallel to study the regulatory framework. All that you have indicated must be poke yourself - download everything you can, every program, in theory everything is simple or incomprehensible. Cryptography is easier to understand by parsing the Caesar cipher, Vigenère, and then GOST 28147, then a couple of asymmetric methods.
Then SMIB will go.

Answer 3

Read ][aker (including older releases in PDF), if you don't understand - ask on the forums.
On cryptography, Schneier has some excellent books.

Answer 4

there is some kind of course from Specialist SEN3. Investigation of hacker incidents

Answer 5

You are trying to embrace the immensity.
doesn't fit well with the above list. Such an outlook at the general educational / superficial level is acceptable at the level of the head of a department or department.
The trainee/student will be hired for a specific position with a narrow range of responsibilities (most likely incident response or security administration). Then you can specialize in an analyst or an architect of information security systems in a specific area (cryptography, virology, software, IS, etc.).
Now you need to decide on a direction. For this, Google and popular science literature (Journals like Hacker, Information Security) are quite enough. You can visit a couple of exhibitions on ACS. They are used by companies as advertising stands, so admission is often free. There are also performances by manufacturers describing the trends and prospects of the region + advertising booklets on their products.
And of course basic knowledge of the Network\DB\OS. You need to know the object of protection.