What is computer security?
Computer security
is a branch of technology known as the information security applied to computers. Information security means protecting information and data against unauthorized access, use, disclosure, destruction, alteration or destruction. The objective of computer security varies and can protect the information against theft or corruption, or the preservation of availability, as defined in the security policy.
implement procedures to ensure technological and organizational information systems, availability, integrity and confidentiality of information managed by the computer system
Computer security imposes requirements
on computers that are different from most system requirements because they often take the form of restrictions not to a computer.
typical approaches to improving computer security are:
Restrict physical access to computers, only those who will not compromise safety.
Hardware mechanisms to enforce the rules for computer programs, so that computer programs for computer security.
Operating system mechanisms to impose rules for programs to prevent computer programs of confidence.
Programming strategies to resist subversion and reliable computer programs.
security consists of three layers:
hacking o
Cracking
o
phreaking
o
Hacking
:
unauthorized use or attempts to circumvent or defeat
security mechanisms of an information system or network.
Hacking always involves some degree of violation of the privacy of others or damage to the computer based on the property, such as files, Web pages or software.
The impact of computer hacking varies from simple to simply invasive and annoying, illegal.Cracking
:
The act of breaking into
a computer system.
cracking software is modifying the software to remove protection methods: protection against copying, trial / demo version, serial number, hardware key, CD check or software Annoyances like nag screens and adware The crack
the most common software is changing a bit of the application to cause or prevent a specific key branch program execution.
phreaking
:
art and science of cracking the phone network.
Security by Design:
technology security is based on logic. There is no universal standard notion of what is safe behavior. “Security” is a concept that is unique to each situation. Safety has nothing to do with the function of a computer application, rather than ancillary to it, so security necessarily imposes restrictions on the behavior of the application.
There are several approaches to security in computing, sometimes a combination of approaches:
Trust all the software that comply with security policy, but the software is not reliable (which is computer insecurity).
You can trust the integrity of the software to maintain security policies and software as trustworthy (by tedious branch and path analysis for example).
Validated
Trust no software but enforce a security policy with mechanisms that are not trustworthy (again this is computer insecurity).
Trust no software but enforce a security policy with mechanisms of trust.
12 Tips for Computer Security:
Update / patch all your software again!
Check / adjust your settings so they are safe because they ARENT by default!
Use a firewall to control, such as ZoneAlarm, which in and out of your computer!
Use good passwords: at least 13marks long, letters and numbers. Remember, atleast to change your password every few months and never use the same password in two places!
Get a good antivirus program: NOD32, F-Secure or Norton Antivirus, and is regularly updated
Do not open or execute files that you are not 100% sure absolutely safe nomatter where or how you get it.
Wipe your log files (such as cookies, internet history and temporary files, etc.), newspapers and personal files with specific wiping program (like Eraser) instead of just deleting them.
Use encryption to enhance your privacy! Use encrypted email (like Hushmail or Ziplip), www-surfing and encrypt sensitive files on your computer (PGP).
When you are finished with an Internet-based service such as e-mail signature, you just do not close your browser! Even if you leave your computer, make sure that none of these programs or connections are left open to allow someone to abuse. In WindowsNT/2k/XP, press windowskey + L to lock the workstation.
Do not use public computers for everything you need to type your credentials, they usually have Trojan horses that capture your passwords.
Make backups and store them in a safe place! The best way to make a full backup is to create an “image” of your hard disk or partition and save it in a safe location, but floppies are generally very good for storing documents, etc />
Sincerely
Kethy www.perceptionsystem.com Wright