Secure deletion: a single overwrite will do it

Saturday, January 17th, 2009

The myth that to delete data really securely from a hard disk you have to overwrite it many times, using different patterns, has persisted for decades, despite the fact that even firms specialising in data recovery, openly admit that if a hard disk is overwritten with zeros just once, all ...

USB Worms

Wednesday, January 7th, 2009

USB worms work by creating a file called AUTORUN.INF on the root of USB drives. These INF files then use Autorun or Autoplay to execute themselves either when the stick is inserted, or more commonly, when the user double-clicks on the USB drive icon from My Computer. Such malicious AUTORUN.INF ...

Clone Your VirtualBox Image

Monday, December 29th, 2008

I found out the hard way that you cannot simply copy and paste your .vdi file, rename, and add a second virtual machine to your system.  Each VDI file has a unique UUID that a single VirtualBox installation will not duplicate.  You have to "clone" it.  The screenshot below is ...

Unprotected computer rendered unusable in under two hours

Monday, December 1st, 2008

In just under two hours an unprotected computer was rendered unusable through online attacks in an experiment in Auckland today.The experiment was designed to show what a household with a computer put itself at risk of everyday, and was carried out by NetSafe and IBM.It was carried out to mark ...

Duplicating keys from a photograph

Monday, November 17th, 2008

Nowadays you don't need a locksmith or even lockpicking tools to get past a locked door without a key--you can do it using software, a photograph of the key and a key-cutting machine.Researchers from University of California, San Diego developed software called "Sneakey" that enables anyone to make duplicates of ...