A DoS attack or denial-of-service attack is an attempt to make a computer resource unavailable to its intended users.

Not all service outages, even those that result from malicious activity, are necessarily denial-of-service attacks. Denial-of-service attacks can essentially disable your computer or your network.

The basic types of DoS attack are:

• Consumption of computational resources, such as bandwidth, disk space, or processor time
• Disruption of configuration information, such as routing information.
• Disruption of state information, such as unsolicited resetting of TCP sessions.
• Disruption of physical network components.
• Obstructing the communication media between the intended users and the victim so that they can no longer communicate adequately.

Microsoft has made a a call for more Internet Explorer (IE) 8 beta testers via the IE Blog.

The next beta of IE 8 due in August. From the MS blog:

Currently the only way to directly file a bug with the IE Team is to be a part of the IE8 Technical Beta program on Microsoft Connect. Beta 2 is right around the corner and we are expanding our reach! If you wish to be a part of making IE better by contributing great bug reports then please email us at IESO@microsoft.com and tell us a little about yourself including why you’d be a great beta tester.

Your DSL or cable company would have promised you a very specific internet speed for your Internet connection, But while browsing the Internet, if you are experiencing slowness with your Internet connection or are simply interested in internet connection performance test , Speedtest.net is for you.

Speedtest.net is a free broadband connection speed test with servers located all over the world. Speedtest.net measures the performance of your broadband connection. At the end of each test, you are presented with the download (the speed of data from the server to your computer) and upload (the speed of sending data from your computer to the server) bandwidth speeds.

Test your Internet Connection Performance/Speed here http://www.speedtest.net/

If there is a hard drive fail, or impossible-to-remove virus, then you have to format the system. Not having backups is difficult tasks at times.

How to back up your important files can be difficult task. There are 2 kind of backups available today 1) Traditional backup programs 2) Online backup

• Traditional backup programs help you organize, schedule, and maintain your backups, and their newest versions make doing so easier than ever.
• Online backup is easy, secure, and safer than local backup (by virtue of being off-site, and being stored on drives that are themselves backed up regularly by your online service provider).

Here is the best Traditional and Online backup picked by pcworld magazine(not free of cost.. but you have free trial)

• NovaStor NovaBackup 10 Professional
• EMC Retrospect 7.6 Professional
• NTI Backup 5 Advanced
• Paragon Drive Backup 9.0 Personal
• Titan Backup

[ pcworld - Save Your Data With One of These Top Backup Programs ]