[Cosvo]

Again, look up the term "Data Remanence" and tell me how secure you feel

Oh my:/

and so what did you learn?

I've learned that even though I think my shit is deleted they are not lol :/

Thanks Roger.S

For  more detailed explanation, see below:

There are a number of common terms associated data and its destruction. Some of those terms include "Erasing, Clearing, Purging and Sanitization".

Erasing is literally just that, you use the "delete" option in your operating system. This would be something like emptying your recycle bin in Windows. All you are doing is removing the pointer information to the location of that file on the hard drive. This can be easily recovered.  

Clearing can also be known as overwriting. This is generally what people are doing when they "write zeros" or other disk preparation methods. While more difficult, it is still possible to retrieve data from devices treated in such a fashion via data recovery labs. Also, this method would NOT touch any sectors of a hard drive that had data in them, but were later marked as bad sectors. Also, solid state media can not be reliably prepared using this method due to the way solid state works.

Purging data is a more intense form is clearing. Basically it's performing clearing functions multiple times.

and finally

Sanitization is a comprehensive process that includes removing or destroying all non-volatile memory (storage media), removing any CD/DVD media, purging and destroying storage media (ssd, hdd, etc).

Contrary to popular belief, degaussing a hard disk drive is NOT a form of sanitization alone. While degaussing CAN leave a disk in what appears to be a sanitized state, often times the degaussing process only damages the electronic components of the hard drive, but leaves the magnetic storage minimally affected. A sophisticated attacker could remove the platters from the damaged unit, or replace the damaged electronics and recover the data.

The only ~100% assurable way of destroying data irrecoverably, is complete physical destruction of the storage media via shredding, incineration, or chemical process.

I must admit that this was some new shit to me...... Thank you roger. Btw my hamster is named Roger!