'Hidden', doesn't mean the evidence is gone!

"It is a proven fact ... routine Forensic Analysis equipment such as EnCase and F.R.E.D. used by Private and Business Investigators, Law-Enforcement and others, can recover evidence from parts of your hard drive that you thought were empty, parts that you had cleaned.

Your hard drive might appear clean ... but still be full of 'sensitive material' that you did not want to download in the first place and it might very well be a Serious Criminal Offence in your country to have that data stored on your computer even if you didn't know it was still there. You could go to Jail! Pressing 'Delete' or emptying your 'Recycle Bin', or even 'Formatting' your disk, simply will not work, the 'sensitive material' will still remain on your hard drive!

Hiding your browsing history ... may give you a false sense of security, just because it looks 'Hidden', doesn't mean the evidence is gone.

You will be held responsible for any data which you allow to remain on your computer, even if it was only by accident. Even files and Internet Searches you have made which you thought you had never "saved to disk" can be recorded as permanent evidence on your hard drive"

These paragraphs were taken from a software description that claim to be able to fully erase material on your computer before you dump it, resell it or give it away. Remember, if you have simply just delete your data or thought your hard drive have failed and sell it to the rag and bone man for a cheap price... becareful the hidden stuff can be retrieved.

The case of Edison Chen was so, he claimed to have erased the material from his computer but he did not know that they could so easily be recovered.

So be very cautious with what you hold in your computer, always use a tough grade eliminator to get rid of stuff you want to disappear on earth forever.