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With their permission, I am selling a company laptop that I used, but I had been using iTunes and syncing my iPhone on that PC. Is it possible for a forensic tech to retrieve any of the browsing history of safari through the stored back ups of my iPhone? And retrieving any emails or messages I have sent out? I had the computer reformatted, but I want to take extra precautions.

I am somewhat wary of leaking any kind of corporate secrets or personal information. Too much money at stake here that can cost me my career. Thanks.

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Reformatting is not sufficient, you need to securely wipe the disk. Reformatting is like ripping the cover off a book; it's not pretty but all the info is still there.

DBAN is a popular free tool for wiping hard drives. If the drive is SSD, you need other tools.

Companies that care will usually not release systems with disks; they'll destroy the disk and whoever buys the laptop/desktop will have to buy a new disk to put in it. When you look at the overall cost of a system, disk is pretty cheap.

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If you're being really paranoid and you want peace of mind, it's probably best to just remove the disk from the laptop and replace it with a new one (as gowenfawr wrote: they're pretty cheap), or with a wiped disk that never contained any sensitive information. Then sell that, and keep your old disk, or destroy it.

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