Tekologik

It happens to the best of us; from time to time we lose data when a computer crashes or freezes, a hard drive becomes lost or corrupted, or a server goes down.

There can be many reasons for this – a power failure or bugs in the software; even criminal activity such as hacking or the propagation of viruses and other malware. Human error, such as accidental deletion of data can also wreak havoc. Studies have shown that around three quarters of all incidences of data loss are due to either human error or hardware failure.

Whatever the reason, when this happens, it is important to try and mount a data recovery operation. Data recovery is a process by which information is salvaged from secondary storage media that cannot be accessed by normal means.

Most forms of data recovery are based on a failure of the computer’s operating system and the solution is relatively simple – gain access to the system and copy the data that is required to another disk. Dealing with a failure of the hard disk itself is more complex and an attempt to recover the data may involve repairing the file system, or using techniques ranging from software-based recovery of corrupted data to replacing a damaged disk.

Most people lack the detailed technical knowledge that is required to perform all but the most basic data recovery, and rely on professional services offered by a number of companies. When doing so they want to know, above all, that those services will be reliable.  Read more... (419 words, estimated 1:41 mins reading time)

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Viruses:

Viruses – A virus is a small piece of software that replicates itself. A virus might attach itself to a program such as a spreadsheet program. Each time the spreadsheet program runs, the virus runs, too, and it has the chance to reproduce (by attaching to other programs) or wreak havoc. E-mail viruses – An e-mail virus moves around in e-mail messages, and usually replicates itself by automatically mailing itself to dozens of people in the victim’s e-mail address book. Worms – A worm is a small piece of software that uses computer networks and security holes to replicate itself. A copy of the worm scans the network for another machine that has a specific security hole. It copies itself to the new machine using the security hole, and then starts replicating from there, as well. Trojan horses – A Trojan horse is simply a computer program. The program claims to do one thing (it may claim to be a game, or a “free” piece of software) but instead does damage when you run it (it may erase your hard disk). Trojan horses have no way to replicate automatically. They are called Trojan horses because they are sometimes disguised as normal computer programs.

Spyware:

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