Computer Security

What is Computer Security?

Computer Security is a branch of technology known as information security as applied to computers. Information security means protecting information and information systems from unauthorized access, use, disclosure, disruption, modification, or destruction. The objective of computer security varies and can include protection of information from theft or corruption, or the preservation of availability, as defined in the security policy.


Technological and managerial procedures applied to computer systems to ensure the 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 constraints on what computers are not supposed to do.

Typical approaches to improving computer security can include the following:


* Physically limit access to computers to only those who will not compromise security.

* Hardware mechanisms that impose rules on computer programs, thus avoiding depending on computer programs for computer security.

* Operating system mechanisms that impose rules on programs to avoid trusting computer programs.

* Programming strategies to make computer programs dependable and resist subversion.


Computer Security has three Layers:

o Hacking

o Cracking

o Phreaking



Hacking:

Unauthorized use or attempts to circumvent or bypass the security mechanisms of an information system or network.

Computer hacking always involves some degree of infringement on the privacy of others or damage to computer-based property such as files, web pages or software. The impact of computer hacking varies from simply being simply invasive and annoying to illegal.



Cracking:

The act of breaking into a computer system.

Software Cracking is the modification of software to remove protection methods: copy prevention, trial/demo version, serial number, hardware key, CD check or software annoyances like nag screens and adware.

The most common software crack is the modification of an application's binary to cause or prevent a specific key branch in the program's execution.



Phreaking:

The art and science of cracking the phone network.





Security by design:

The technologies of computer security are based on logic. There is no universal standard notion of what secure behavior is. "Security" is a concept that is unique to each situation. Security is extraneous to the function of a computer application, rather than ancillary to it, thus security necessarily imposes restrictions on the application's behavior.

There are several approaches to security in computing; sometimes a combination of approaches is valid:


1. Trust all the software to abide by a security policy but the software is not trustworthy (this is computer insecurity).

2. Trust all the software to abide by a security policy and the software is validated as trustworthy (by tedious branch and path analysis for example).

3. Trust no software but enforce a security policy with mechanisms that are not trustworthy (again this is computer insecurity).

4. Trust no software but enforce a security policy with trustworthy mechanisms.




12 tips for computer security:


1. Update / patch ALL your software every now and then!

2. Check / adjust ALL your settings so they are safe, since they ARENT by default!

3. Use firewall, like ZoneAlarm to control what goes in and out from your computer!

4. Use good passwords: at least 13marks long, containing both letters and numbers. Remember to change your password every few months atleast and dont ever use the same password in two places!

5. Get a good antivirus program: NOD32, F-Secure or Norton Antivirus and keep it updated!

6. Don’t open or execute files that you are not 100% sure are absolutely safe nomatter where or how you get them.

7. Wipe your historyfiles (like cookies, internet history and temporary files, etc.), logs and personal files, with specific wiping program (like Eraser) instead of just deleting them.

8. Use encryption to enhance your privacy! Use encrypted email (like Hushmail or Ziplip), www-surfing and encrypt sensitive files on your computer (PGP).

9. When you are finished using some internet-based service like email, sign out of it rather than just closing your browser! Also, when you leave your computer, make sure that none of such programs or connections are left open that someone could abuse. In WindowsNT/2k/XP, press Windowskey+L to lock the workstation.

10. Don’t use public computers for anything you need to type in your logins, they usually have Trojan horses that capture your passwords.

11. Make backups and store them in safe place! Easiest way to do a total-backup is to make an "Image" of your harddrive or partition and store it on safe location, but floppies will usually be just fine for storing documents, etc.

12. Install and Use a Hardware Firewall

Internet TV Questions and Answers

Talk to me more or less Internet TV?
1. What about IM.com? Is it worth it?2. How about Satellite TV for PC? Will I really get channel from all around the world at no cost, legally, and without risky my computer? It just got it and...

I want to monitor material live tv on my internet and run a usb to my hd tv,?
can anyone help me do this. I cant and will not pay $70.00 to $100.00 a month to the cable company. I know there are sites I can progress to for a download, but I can assure you, it...

Which would you fairly own: TV or Internet...?
:) I want both! :) Haha. But if I reeeaaally had to choose one, then I guess it would be the Internet. Without TV, I could still download TV programmes and watch video on YouTube and stuff. But without the...

where on earth is the TRUE internet?i get the impression approaching i m watching ad on tv!buy buy buy...wasnt resembling that few years ago.?
What is most annoying is that i get the same sites back,no business what string i give to search engines.I read there are billions of sites on the lattice and my impression is that there are a few hundreds.I know they...

How can i start an Internet TV?
Its through a tv tuner card by which u get access to tv & then u can record & ratify those videos from there on to the internet.here's some more detail abt that card:A TV tuner card is a computer component...

Does watching mass on TV or the internet fulfill your religious responsibility?
If so, can you just have it on in the milieu, while you are doing some work, or something? Could you get an iPod video, for example, and get Mass out of the way on your day after day commute? Would...

tv or radio or internet ?
Which of the ones would you pick as a wish to have and do.. pick one and tell us the use why you like that one instead of the other..If i didnt had anything and that i was simply to...

Would you to some extent survey internet video or TV shows?
Do you find it more convenient to watch shows on TV or the internet? tv shows.

Can anyone notify me what are some biddable internet service providers that tender elevated speed internet and cable TV?
I live in Knoxville TN but any names would help....and phone #'s if you hold them....I go to online college and my ISP won't come out til saturday...well I'm basically screwed because I won't know how to get my work in...

at&t vs comcast for tv,phone,internet?
I had comcast for basic cable and just not long switched to u-verse at&t for internet & digital cable w/ on demand and dvr. I have at&t for local & long distance phone. I recently saw an advert for...

Verizon High speed internet plus direct tv VS Comcast Internet and Cable?
Any suggestions would be great First off Verizon high speed is very expensive and not that quickly...maybe if you got FiOS but DSL is slow now. That person said Comcast Cable internet is much faster and they give you a...

have any body tride any of those internet cable tv website deal do you bring back hbo , mtv etc. does it work?
i came accross several websites that offer internet cable tv for very cheap prices here is one example http://www.sattellitetvonpc2007.com/have any body tried one of these ,does it realy work do you get real cable channels resembling mtv hbo spike discovery history...

Why does an internet video player show solid bright colors similar to an outmoded scrambled cable TV passageway?
I have a new computer and with some (not all) video players, it comes up near bright blocks of colors like watching a scrambled cable channel 15 years ago. Do I need to install something resembling Flash? or something else?This...

How can I cope next to waiting for my cable TV and internet to be fixed?
My Cable TV and internet is not working and I was told if I yell and shout about my Cable TV and internet not working and call time warner roughly my cable TV and internet not working that it will not...

how to download a movie or tv series surrounded by the internet?
i love watching,pls somebody help me.what do i need ?what website?what software?and pls tell me how to do it within laymans term,or at least from A to Z steps. i really want to learn this item. I am about to...

what are some moral sites for Internet TV?
http://www.veoh.comVeoh was just featured yesterday contained by USA Today as the best internet TV site on the web compared to others. They offer everything from uploaded home videos to lattice television shows. Also, if you like to post your...

Wireless router. I only kicked cable company and started satellite TV. I hold to win DSL for internet.?
The max speed for my DSL is 3 mega bytes. After connecting to a wireless 54G linksys wireless router, my speed is down to about 0.38 mbps. What can I do to increase the speed of my internet service?? please help...

what is th best road to see tv on the internet? i want to scrutinize films and tv series.?
trying to watch stuff on free links is just annoying now because so plentiful dont work so if any one knows a good service thats not too expensive let me know! Hi, a couple of links that might give a...

how can i manufacture my trellis show on tv and internet next to my friends?
i want to make a web show with my friends how product it and download it on a site like youtube or one similar, let lots of people know give or take a few it and hope it takes off...

What website can you download or survey tv shows on the internet for free?
I need a website or software where you can download all the conventional tv shows which are shown on cable and sky digital for free? youtube

What type of cable does at&t uses for internet? can you capture free cable tv beside it close to comcast??
if att uses coax cable con you get free internet? many people speak u can get free tv just like comcast is it true??also what type of modem do they give/rent/buy??what do you cogitate is better comcast att? why? ...

TV or Internet?
if you had to live without one which would it be? me id enjoy to say internet thats a hard question, possibly t.v. cuz i can watch all my favorite t.v. shows on the internet

Which site is the best to examine internet tv?
i know about ovguide and veoh, but I want to know if there's anything out there that would force me to get a 32 inch lcd right away to hook up to my computer. Hulu, a foreign television streaming site,...

Small Business Web Solutions

MartStreet is the most complete website and ecommerce solution on the web. They have gathered everything needed to run a successful online business under one roof.

Most business web solutions are merely web hosts offering ecommerce features. Unlike these services, MartStreet is a professional company involved in all phases of running online stores, including building, maintaining, and marketing. Each of their services is available separately, and you can select a mixture of those that you feel would be most beneficial to your business.

As an established business web solution company, they can provide everything that you would expect of them: Domain names, web hosting, e-mail, webmail, website design, e-commerce, content management systems (cms), search engine optimization (seo), and a whole load of advice on best practice and how to get the most from your website, gained over many years of practical experience in this business. They provide ecommerce web solution taking care of safety & security of every online transaction on the ecommerce website.

With MartStreet you can expect a top quality service, and the ideal ecommerce web site solution to meet your needs:

• E-commerce designed uniquely to your business

• Website design or redesign aligned to your brand and extremely user friendly

• Content managed system for quick and easy updating

• Information flow to back office systems

• Online marketing to drive targeted traffic

• Dedicated support and reliable managed hosting

With a wealth of experience and substantial learning, the skilled employees at MartStreet are highly proficient at implementing sound e-commerce web site infrastructures - built to stand the test of time. If you invest your confidence now, it will pay back major dividends well into the future.

Concept of Shared Web Hosting

After designing of website next important thing is to get it hosted on the internet. The task is not at easy as there are so many companies offering various types of web hosting packages like shared web hosting, dedicated web hosting, managed web hosting etc. Now the problem is which one to use?

In general it is considered a good idea to go for shared web hosting if the user is in a small business and wants to save cost. However before finalizing the deal it is good to know what is shared web hosting service and what are the merits and demerits of shared web hosting.

Defining shared hosting:

If extremely high performance and high bandwidth are not the points in question, then shared web hosting service can be a most convenient and economic way of hosting web sites.. As name implies, in case of shared web hosting service, the web server that hosts the web pages is shared by several other websites. Talking about number of websites on a shared hosting server, they can be in thousands. Now due to the fact that just one server is fulfilling the requirements of many other websites, the plus point is they can offer cheap prices for their server.

As there are so many websites hosted on a single web server, still there is no pint of worry for the user as the web hosting providers will not compromise on any kind of security and performance issues in case of shared hosting servers. Not only that, shared hosting web servers are operated, monitored and look after around the clock by IT professionals, so as to minimize server downtimes.

Shared hosting servers run on UNIX or other multi-user operating system and each website hosted on the web server is provided a separate account in the operating system. These websites hosted on shared servers are provided unique shared IP addresses and are provided with a fix amount of web resources.

The following are some of the merits and demerits of shared web hosting:

Merits:

1. Cost effective: Due to the fact that many websites are hosted on a single web server, web hosting providers provide economic shared web hosting services. Generally, the cost is as low as $5-10 per month for shared web hosting services. Now-a-days due to cut throat competition in web hosting industry, one can find several web hosting companies offering huge web space and bandwidth with as high as 1000 MB disk space and 40 GB bandwidth.

2. Feasible: Due to the fact that shared hosting web servers are operated, monitored and look after around the clock by IT professionals, who are experts in their respective field, one can concentrate more effectively on his/her web business and the problem of downtime and maintenance will not bother him/her any more.

3. Utility options: In case of shared web hosting, though web resources are shared, utility options are provided by the hosting company so that user can manage his/her website using control panel or similar tools. User is having an option to upload files, modify /remove web pages, add database, check web statistic etc. Not only that, user is also provided facility to create domain name specific e-mails accounts.

4. Efficient: Now-a-days shared web hosting service usually comes with web space and bandwidth that are more than sufficient for small business websites. Efficiency lies in the fact, that in addition to above, one can add more resources and can even overrun the web space or bandwidth usage.

Demerits:

1. Problem with response time: As the web server is shared, websites in the shared web hosting have to face problem of slower server response time as compared to dedicate server hosting.

2. Problem of Reliability: In case of shared web hosting, problem of reliability remains as usually web hosting providers may take care of the security and performance of the shared server but it is also possible that some of websites hosted on the shared server run a nasty program or script or over-utilize the resources, resulting in bringing down the web server. Thus due to fault of one all websites have to suffer downtimes and inaccessibility in case of shared web hosting.

3. Problems related to sharing: As discussed above also, due to fault of one all users have to face the problem for example if there is any one "bad" website in shared web server, due to it all websites on the server can be banned altogether by ISP or search engine due to shared IP address. However it is worth to note that one can always pay extra to get a dedicated IP address to avoid the above problem.

4. Problems related to Security: As many websites shared one server, problem of security always remains in case of shared web hosting as it is quite easy to hack one’s sensitive datas by another on the same server.

Thus in conclusion it can be said that before deciding to deal with shared web hosting, one should consider all the merits and demerits of shared web hosting as highlighted above. One should not forget the success of his/her business depends upon his/her website which in turn depends upon good host provider.

It Solutions and Web Development in the Internet Industry

IT Solutions Primer

In the developing industry of the internet, people have learned and got accustomed to being reliant to the information that can usually be found in the internet today. Some of the most wanted information don’t come for free and so in order to be able to understand some of them, there will be times that a cash obligation comes around. This is true most of the time but with what the internet can offer for people who knows how to look for the perfect and free information, everything else is easy as pie. IT solutions speaking, there are a very wide variety of information and data sheets that sometime in order for you to arrive at will require the skill to look for them. They are important and they must be found so here are a few free shortcuts and features that you might be interested to have but only in terms of importance.

Computer Hardware and Software Tips

There is very big difference between a computer hardware and software tip. While software goes as the unseen and cannot-be-held physical component in the computing industry, the other is that which can be virtually hand held and determined in terms of specifics and standards that are set by their manufacturers. The use of software is an essential and integral part of a computer and therefore is always a must in order to run data or display one in the right platform.

Usually, software has tutorials and information like Linux Tutorials, MS DHCP servers, CSS, Microsoft, Windows and they mostly come with one as a guide for the users and they mostly coincide to be a requirement before you can use any hardware, otherwise, malfunction in the same hardware can take over anytime. Aside from this fact, hardware on the other hand is actually a helping aid for the computer so that things don’t get messed up forcing the virtual parts, especially the motherboard of the computer to function over an abused condition. In simple words, hardware helps the computer to lighten, ease out or even out the load and well distributes it into its own physical components like the mother board, video card, LAN card, sound card, memory and so on. When troubles occur by misuse of either component, the need for computer repair tips or the repair person gets in.

Web Development and Web Site Design


Web development is that part of the internet industry which is responsible for all the revolutionary changes that have happened in the past 10 years that contributed to the technology development at the same time. One aspect of the web development is the coming of the web design era which greatly helped a lot in improving the online business in a globally accepted standard that comply with the WWW or the world wide web standards or the W3C or the World Wide Web Consortium.

Web Site Designing and Development

Web design since then became a clear manifestation of the advancement and fast improvement of online business arising from the need to make quality businesses appear as professional as they can be with prospect clients as well as visitors who come using the internet. Today, there are so many standards that accompanied the improvement of web site design standards and I must admit that they aggressively helped a lot of webmasters develop their own set of visions by combining aesthetics with standards to form the best looking websites of today.

Computer Software and Hardware Repair Tips


Upon the development of the web and its corresponding major role players which are the software and hardware, the development and the need for the right knowledge that will handle all the right actions arise. What I am referring to is the need to cope up with the need to cut costs in case of problems with the use of a technology that enables qualified service men to make repair for certain problems that require software and hardware knowledge. Hence, the computer hardware and software repair came to the rescue and just in time for the pouring problems brought about by the aging technology which in the computing industry is fast as the lightning bolt.

Easy Repair Tip!

This situation probably sounds familiar, without any reason you find yourself with a slow computer problem and from that point your Pc won't work as it used to. You start researching for a solution on the Web and try all kinds of tips that'll help you to repair this unexpected problem. Read this quick article and you'll uncover a quick way to eliminate this problem and even speed up your pc like never before.

Right before you spend your valuable time on the Net while trying to understand what went wrong with your Windows and what you should do, there is one thing you should know, and from some reason most PC users are not aware of that - when having a slow computer problem in most cases it comes from your windows registry system.

It is important to understand that the registry is one of most important areas of windows. This database stores the setting that runs your pc's programs. As you install, edit, and erase software installations, the registry becomes filled with unnecessary data which causes various problems such as slow boot problems, dll problems, and of course slowdowns and freezing problems. Remember - 'unclean' registry system is the first source to a wide range of Windows errors.

Luckily when you have a slow computer problem it can easily be fixed by repairing your registry system. It doesn't sound like an easy task, and that's true, however, you can easily find highly professional and easy to use registry repair applications that can quickly clean your registry system extremely fast, so basically you don't have to handle it by yourself. Important note - don't try to edit and repair your registry system manually; it can easily make you more trouble. The majority of these applications provide free system scan so take the opportunity and let one of these products easily repair your Windows.

Tips for Choosing the Right Web Domain and Hosting Company

There are so many companies to choose from when it comes to acquiring web domain registrations and hosting.

However, there are certain key elements that should be considered before committing to a particular company.

The first tip is to think about your budget. What can you afford? Do not be carried away with sales pitches and slick marketing tactics. Do not over extend yourself.

If you are about to host a site for business purposes, the following elements are important:

a. SSL Certificates: People are getting smart about online security. More and more of them are looking for the padlock icon and "https" prefix in the address bar of their browser before submitting personal information online. If your Web site doesn't have an SSL Certificate, visitors may leave before making a purchase, creating an account or even signing up for a newsletter.

b. Customer/Tech Support: Does the company have 24/7 customer support? If they do not have this basic service do not use them!

c. Spam Free Email: Is the email service protected from fraud, spam, and viruses. Make sure it is compatible with Microsoft® Outlook®, Outlook Express, and Mozilla Thunderbird .

d. Quick Shopping Cart: Online Sales are expected to hit $144 billion in the U.S. and £78bn in the UK by 2010. Isn't it time you got your piece of the pie? With a quick Shopping Cart, you can create and publish a stand-alone Internet store or add one to your existing Web site in a matter of minutes. Make sure the company you choose provides this service if you are considering e-commerce with your site.

e. Hosting and Servers: From a basic Web site to a massive online superstore, look for full-service hosting solutions for every need and your budget. Make sure the company offers up to 99.9% guaranteed uptime, best-of-breed routers, servers and firewalls and 24/7 support and maintenance.

You can succeed with the right tools, so choose wisely.

What You Need to Know About Slow Computer Solutions - Tips To Save Your Computer

Do you want to make your computer faster and more responsive? Do you want to fix it quickly? Well then listen up!

Easy Slow Computer Solutions

Step 1: This is probably the easiest of them all; uninstall unnecessary programs. To do this you will want to head to the "Start" or Windows button on your bottom left, then click on "Control Panel" on the right hand side of the window that comes up, and finally click on "Add/Remove Programs" It is here that you will be able to uninstall any unwanted programs.

The programs that should be up for consideration for uninstalling would be programs that you either don't need or rarely use. This is the best place to start for Slow Computer Solutions, if you still seem to be having problems go on to Step 2.

Step 2: Finally, you can always hire a computer technician. I would only do this if Step 1 and 2 don't work. The only time I would recommend to hire one would be if you have computer errors or virus' that Registry Easy couldn't solve.

How To Avoid A Computer Slow Down

Avoiding these 'Slow Downs' can be actually very simple. Firstly always pay attention to what sites you visit, what you install, and what you accept! This alone will stop 50% of the slowdowns. The problem is, when you go to a site that contains malicious content it is certain that it will attempt to get your computer. This is then where accepting comes into play. DO NOT accept random things on sites you don't know!