Now a days computer is a pert of our life . Everyone love his computer like a life. But someone don’t know how to safe his computer or laptop.
Today I post 5 important subject to safe her/his computer or laptop on the Internet?
Subject 1. Firewall:
A firewall is a piece of software or hardware that sits between your computer and the network and only allows certain types of data to cross. For example, a firewall may allow checking email and browsing the web, but disallow things like Windows file sharing.
If you’re connected to the internet through a router, then you already have a type of hardware firewall that prevents random networking-based external threats from reaching your computers.
If you’re using a dial-up internet connection, a firewall may not be as important, although it doesn’t hurt to have one. A software firewall may be your only option.
Subject 2. Computer Scan for viruses
A virus is a computer program written by someone presumably with the intent of spreading and causing grief.
Sometimes, typically via email or other means, viruses are able to cross the firewall and end up on your computer anyway.
A virus scanner will locate and remove them from your hard disk. A real-time virus scanner will notice them as they arrive, even before they hit the disk, but at the cost of slowing down your machine a little, and occasionally even interfering with other operations.
Important: Because new viruses are arriving every day, it is critical to keep your virus definitions up-to-date. Be sure to enable the scanning software’s automatic-update feature and have it do so every day.
Subject 3. Scan for spyware
Spyware is similar to viruses in that they arrive unexpected and unannounced and proceed to do something undesired. Spyware can be relatively benign from a pure safety perspective, as it might “only” spy on you. But that’s enough. It can violate your privacy by tracking the websites that you visit, add “features” to your system that you didn’t ask for, or record your keystrokes and steal your account login information for any online services that you might use.
Some of the worst offenders are spyware that hijack normal functions for themselves. For example, some like to redirect your web searches to other sites to try and sell you something. Of course, some spyware is so poorly written that it might as well be a virus, given how unstable it can make your system. The good news is that, like virus scanners, there are spyware scanners that will locate and remove the offending software.
Subject 4. Don’t forget the physical
An old computer adage is that “if it’s not physically secure, it’s not secure.”
All of the precautions that I’ve listed above are pointless if other people can get at your computer. A thief can easily get at all of the unencrypted data on your computer if they can physically get to it. Even login passwords can be trivially bypassed if someone has access to your computer.
The common scenario is a laptop being lost or stolen during travel, but I’ve also received many reports of people who’ve been burned because a family member, friend, significant-other, or roommate accessed their computer without their knowledge.
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