Experts Teach You How To Completely Destroy The Hard Disk Data

December 2, Seke Mu lake there was a shooting, 14 people were killed and 22 injured. The FBI learned that the suspect threw the lake laptop hard drive may contain with case-related emails and other evidence Thereafter, conducted a search of the lake. There are data forensics experts said that if the hard drive just soaks up water, the data recovery is not difficult. In fact, in order to destroy a hard drive as well as a more efficient way.

Data stored in the hard disk 0 and 1 made of an aluminum block, ceramic or glass platters, which looks like a CD. Center disc is a rotating spindle can be controlled, the head with a current for data read and write operation, actuators, and other electronic components are responsible for controlling the entire operation.

Water may make electronic components shorted hard disk, but the data is not lost, regardless of the disc is wet or dry. Russell Chozick vice president from Flashback Data Corporation, explains: "As long as the disk does not become dry, forensic experts will be able to very easily restore the data, because it will leave some traces difficult to remove after the dry."

Russell Chozick said: modern solid-state drives (SSD) and flash memory actually easier "drowning", most of them with onboard encryption, which means that the hard drive circuit board must decode anything stored on the memory chip. However, SSDs currently only one-third of the PC hard drive market, and, therefore, the conventional rotary drive is still the most in need of attention.

So, what more effective way than the water damage it? Some professional IT people told us that the magnet near the hard disk may not effectively destroy the data. CEO and co-founder of cloud storage company Backblaze's Gleb Budman said: "we must first solve the hard disk in steel protective shell, then a strong enough magnet close to the magnetic disk, so that it can effectively destroy the data, however, the disk is the most secure way to crumble. "

In fact, we can use a screwdriver and a hammer within minutes easily open a hard drive, and use brute force is the best way in a short time it destroyed. Russell Chozick said: "The laptop hard disk is commonly used in glass, if you hit hard, then, the glass will be crushed, and no one can recover." Of course, in some cases, to restore the glass disc Data is not impossible, but it is a long process, and recovery costs are very expensive.

Desktop PC's hard drive is mostly made of aluminum plate, we need to spend a little more effort to destroy the data. For example, a lot of scratches can prevent driver initialization, and can interfere with traditional data recovery. Of course, the aluminum disk, large or small cracks also have the same effect.

However, Gleb Budman said, advanced laboratories can read the data on the disc is not complete, they do not even need a hard disk rotation can do, experts can recover enough of 0 and 1 to complete the data read in the disc take.

In addition, the heat generated by the drilling on the disc is very likely to cause massive destruction. This may make the disc itself is distorted, and cause all the discs are subtle changes occur. To get the data in the hard disk completely ineffective, in fact, it does not need to change too much, a little bit is enough.

If you think the above ways are not enough insurance, you can consider using an acid to completely release all the information on the disc. Of course, we can also use some of the less aggressive ways to erase the data on the hard disk, such as Windows and Mac OS X systems are erased with a similar tool to overwrite an existing random 0 and 1 data. Gleb Budman proposal, a new hard disk need to rub two times, the best wipe old hard seven times, otherwise, some advanced laboratory can still find "clues" in the data is overwritten.

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