Believe it or not, you just can't shred too much. If you aren't destroying your sensitive data, my best advice is for you to start now. There are people out there who make a living diving into dumpsters in search of credit card info, bank account number, mortgage statements, and medical bills; all things they can use to steal your identity.
Here are 12 tips that you can use to help you destroy your sensitive data:
Buy a shredder. That said, I don't own a shredder. I'll explain shortly. There are a number of different brands and models out there. Some even shred CDs. This is important if you keep your documents saved on a computer, which you then saved to a CD. Don't, however, try to shred a CD in a shredder that isn't equipped to do this job. You will definitely break it.
Skip a "strip-cut" shredder. These shredders produce strips that can be re-constructed. You would be surprised by how many people don't mind putting these pieces together after finding them in trash. Yes, again, people will go through dumpsters to find this information. Watch the movie "Argo" and you'll see what I mean.
Shred as small as you can using a cross cut shredder. The smaller the pieces, the more difficult it is to put documents together again. If the pieces are large enough, there are even computer programs that you can use to recreate the documents.
Fill a large cardboard box with your shreddables. You can do this all in one day, or allow the box to fill up over time.
When the box is full, burn it. This way, you are sure the information is gone. Of course, make sure that your municipality allows burning.
You should also shred and destroy items that could get you robbed. For instance, if you buy a huge flat screen television, don't put the box on your curb. Instead, destroy, shred, or burn that box. If it's on the curb, it's like an invitation for thieves to come right in.
Shred all of your documents, including any paper with account numbers or financial information.
Shred credit card receipts, property tax statements, voided checks, anything with a Social Security number, and envelopes with your name and address.
Talk to your accountant to see if they have any other suggestions on what you should shred and what you should store.
Shred anything that can be used to scam you or anyone. Meaning if the data found in the trash or dumpster could be used in a lie, over the phone, in a call to you or a client to get MORE sensitive information, (like a prescription bottle) then shred it.
Try to buy a shredder in person, not online. Why? Because you want to see it and how it shreds, if possible. If do buy a shredder online, make sure to read the reviews. You want to make sure that you are buying one that is high quality.
Don't bother with a shredder. I have so much to shred (and you should too) that I use a professional document shredding service.
I talked to Harold Paicopolos at Highland Shredding, a Boston Area, (North shore, Woburn Ma) on demand, on-site and drop off shredding service. Harold said "Most businesses have shredding that needs to be done regularly. We provide free shredding bins placed in your office. You simply place all documents to be shredded in the secure bin. Your private information gets properly destroyed, avoiding unnecessary exposure."
Does your local service offer that? Shredding myself takes too much time. And I know at least with Highlands equipment (check your local service to compare) their equipment randomly rips and tears the documents with a special system of 42 rotating knives. It then compacts the shredded material into very small pieces. Unlike strip shredding, this process is the most secure because no reconstruction can occur.