In computing, a hacker is any skilled computer expert who uses their technical knowledge to overcome a problem or otherwise gains remote access to a protected computer system mainly to get thrill out of it.
A cracker is also a skilled computer expert but he/she breaks into or otherwise violates the system integrity of remote machines with malicious intent. Having gained unauthorized access, crackers destroy vital data, deny legitimate users service, or cause problems for their targets.
Few netiquettes are as follows:
- Respect other‟s privacy
- Acknowledge and return messages promptly.
- No spamming
- When typing never write in all capital letters. That is considered shouting.
