Net Security & Encoding/Decoding Algorithms Explained

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The discussion centers around the differences between hacking and cracking, emphasizing that hacking involves understanding systems and software without malicious intent, while cracking typically refers to breaking into systems for harmful purposes. Participants clarify that hackers may exploit vulnerabilities to enhance security, while crackers often introduce malware. The conversation also delves into data compression and encoding, explaining that compression techniques reduce file sizes by eliminating redundancies in data, with examples like JPEG and MPEG illustrating both lossy and lossless methods. The importance of understanding network security is highlighted, with mentions of SQL injection and brute force attacks as common hacking techniques. Additionally, there is a distinction made between different types of hackers, such as white hats (ethical hackers) and black hats (malicious hackers), and the need for good cybersecurity practices is underscored. Overall, the thread provides insights into the complexities of data encoding, compression, and the ethical considerations surrounding hacking.
  • #31
this should go to philosophy forum
 
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  • #32
Just to add a bit more information to this topic, there are two types of hackers: Whitehats and Blackhats. (mainly) Whitehats are the hackers who hack in order to secure a system, first by exploiting it then by patching it. A Blackhat is a hacker who exploits a system and takes advantage of it by malicious means (virii, trojans, rootkits, etc.), otherwise known as a cracker. Aside from Whitehats and Blackhats, there are script kiddies and lamers. Script kiddies are the, usually, 10 year old kids who are to lame to learn about computers, the net, and the interworkings of things, and they just run some perl scripts or type in some google hacks (code that you type into google that let's you retrieve 'special' results, like inline:"hello" will find webpages with hello in their title) and deface a website. The lamers are people who read up on hacking, say they hack, but actually don't do anything at all, which in my opinion are the worst of them all.

Now to answer the question about hacking and the internet. Hackers use many techniques(sp). One technique is Brute Force/Dictionary Attacks and are used to crack into a website by testing multiple combinations of usernames and passwords, till one works. Another technique is SQL Injection and Cross Site Scripting. Other techniques include buffer overflows, injecting low level code (assembler/assembly) into a kernel, and just plain old telneting to a box and cracking the hash file. A hacker must learn a variety of information such as perl, C++, assembly, php, sql, kernel programming, unix, linux, windows xp and 2000 mainly, solaris (sometimes), ports, commands, file architecture, networking (packets, cookies, DNS, ARP posioning), encryption (Triple DES, Blowfish, Twofish, Serpent, Hash), and much much more.
 

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