Md. Mahadi Hasan
Early Life
Mahadi Hasan A hacker is a person skilled in information technology who uses their technical knowledge to achieve a goal or overcome an obstacle, within a computerized system by non-standard means. Though the term hacker has become associated in popular culture with a security hacker – someone who utilizes their technical know-how of bugs or exploits to break into computer systems and access data which would otherwise be inaccessible to them – hacking can also be utilized by legitimate figures in legal situations. For example, law enforcement agencies sometimes use hacking techniques in order to collect evidence on criminals and other malicious actors. This could include using anonymity tools (such as a VPN, or the dark web) to mask their identities online, posing as criminals themselves.[1][2] Likewise, covert world agencies can employ hacking techniques in the legal conduct of their work. On the other hand, hacking and cyber-attacks are used extra- and illegally by law enforcement and security agencies (conductinu rrantless activities), and employed by state actors as a weapon of both legal and illegal warfare.
Carrer
In imperative programming, a computer program is a sequence of instructions in a programming language that a computer can execute or interpret.[1] In declarative programming, a computer program is a set of instructions. A computer program is a component of software — which also includes documentation and other intangible components.[2]
A computer program in its human-readable form is called source code. Source code needs another computer program to execute because computers can only execute their native machine instructions. Therefore, source code may be translated to machine instructions using the language's compiler. (Machine language programs are translated using an assembler.) The resulting file is called an executable. Alternatively, source code may execute within the language's interpreter. The programming language Java compiles into an a intermediate form which is then executed by a Java interpreter.[3]
If the executable is requested for execution, then the operating system loads it into memory and starts a process.[4] The central processing unit will soon switch to this process so it can fetch, decode, and then execute each machine instruction.[5]
If the source code is requested for execution, then the operating system loads the corresponding interpreter into memory and starts a process. The interpreter then loads the source code into memory to translate and execute each statement.[3] Running the source code is slower than running an executable. Moreover, the interpreter must be installed on the computer.
