jfitzpatrick at October 24th, 2013 16:01 — #1
Originally published at: http://www.howtogeek.com/174307/how-can-i-safely-destroy-sensitive-data-cdsdvds/
You have a pile of DVDs with sensitive information on them and you need to safely and effectively dispose of them so no data recovery is possible. What’s the most safe and efficient way to get the job done?
doctordeere at October 24th, 2013 17:14 — #2
Just let my brother borrow them. Every music CD and movie he's ever borrowed from me got returned 100% unreadable. Fookin' NSA couldn't recover a disc after Chuck's been within fifty feet of it.
themike at October 24th, 2013 17:18 — #3
i break mine up, so far no one's died from it
kapela86 at October 24th, 2013 18:04 — #4
Try LiteOn drive with SmartErase, iHAS324 has this
bigtech at October 24th, 2013 21:38 — #5
Why does no one mention the obvious solution?...Fire.
There's also my 2 year old nephew
markw676 at October 24th, 2013 23:08 — #6
Microwaves are a slow but fun method!
acf at October 24th, 2013 23:52 — #7
That Keltari is one smart cookie and good looking too!
freeman at October 25th, 2013 00:40 — #8
How to Destroy a CD or DVD
WikiHow got all problem solved.
nsdcars5 at October 25th, 2013 05:33 — #9
How about ‘accidentally’ putting it in a toaster? (I take no responsibility for the toaster, you, your house, your housing society, your city, your state or your country).
mdknightr at October 25th, 2013 11:55 — #10
Burn them. It's really the only way to completely destroy data. Might be fun to experiment using a plasma torch if you have one handy.
straspey at October 25th, 2013 12:20 — #11
I have a good-quality, floor-standing shredder designed for the home user, made by Fellowes.
It has a sliding door designed specifically for shredding computer discs and credit cards.
Since I mostly use the shredder for paper and documents, the bit's of shredded plastic fall into the large collection bin - where they become mixed up with a few pounds of shredded paper and are essentially unrecognizable.
robotsneedhugs2 at October 25th, 2013 12:31 — #12
So how can a disc exist, yet be destroyed? Well, the most common method is grinding the disc down to destroy the data, yet keep the label surface of the disc intact. Basically, it’s no different than using sandpaper on the writable side, till the data is gone.
Isn't the back of the label side where the data is actually stored?
nsdcars5 at October 25th, 2013 13:55 — #13
Yes, and that's what the post saying. Sand or grind off the back of the label.
requiem451 at October 25th, 2013 14:22 — #14
Yes you are correct if you are referring to recordable media made using a consumer level cd burner. These use a low power laser to burn pits in the form of dots and dashes (representing 0s and 1s) into a layer of ink. This layer lies just below a reflective layer which in turn lies just below a layer of paint. All of these layers are on TOP (up facing side) of the recordable media. Scratching or sanding the bottom (down facing side) of consumer level recordable media does NOT destroy data. It only makes it difficult for the laser to penetrate the clear plastic to reflect off of the reflective layer and back down onto the data (ink) layer to read the disc. If the scratches are heavy enough the laser can't penetrate at all. If the scratches are light, then the laser might just be refracted causing read errors. Commercial level recordable media, (like the ones you purchase software or music on) use a much higher powered laser which burns the pits into a more robust layer of plastic instead of ink. This makes them less susceptible to damage but also harder to destroy. The government process that is being referred to, is most likely referring to this type of media (I can't say for sure as I've never worked for the government). The reason I say this, is that the recording layer of plastic that a commercial level r media writer burns to is located closer to the midway point inside the disc. It is therefore feasible to grind away at the bottom (down side) of the disc until the data layer is reached and destroyed, while still retaining a thin layer of plastic making up the top protective layer, reflective layer, and label. This process, as described, would not work for consumer level recordable media because tye recording layer is located so close to the surface of the top (up side) layer. That being said, sanding or burning off the TOP (up side) layer of consumer level recordable media, will result in completely destroyed data. Just be sure to remove all of the darker colored material from the top level until all you see is clear plastic material. What you are left with is clear plastic and nothing more.
ladyfitzgerald at October 25th, 2013 14:23 — #15
Using a shredder is the most efficient method of destroying a large number of disks. For just a handful, wrapping them together in an old towel you don't mind throwing out and whaling away on them with a big hammer is the fastest, safest and neatest way to destroy them; just toss the smashed disks still wrapped in the towel.
robotsneedhugs2 at October 25th, 2013 15:16 — #16
Thank you for explaining it to me. I didn't know there were two types of discs like that.
sigrossman at October 27th, 2013 15:11 — #17
When I get a cracked DVD from NetFlix it doesn't ruin al all. They send me another copy Seems to me this may be the simplest idea. When you try cracking it put goggles on if you don't wear glasses. There might be shards. And don't worry about hazardous waste. The Los Angeles Bureau of sanitation says you can put discarded
CDs in your normal garbage. However, not true for magnetic tape.
ladyfitzgerald at October 27th, 2013 16:15 — #18
Curious. I wonder what is in magnetic tape that is so hazardous?
straspey at October 27th, 2013 17:59 — #19
Little teeny bits of earth with leftover gravity inside -- that's where the magnetism comes from...
ladyfitzgerald at October 27th, 2013 18:16 — #20
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