With all the focus on keeping electronic docs stored safely, many businesses don’t pay enough attention to the security of old-fashioned paper information.

And the peice of paper causing the most trouble: undeliverable W-2s. When an employee’s W-2 is returned to an employer, IRS regs require the company to hold onto it for four years. After a few things, the stacks of paper can pile up, leaving a treasure trove of social security numbers and other info identity thieves can use.

One solution many companies are turning to: scanning the docs into electronic files and shredding the originals.

That puts all the forms in once place without taking up any physical space, and makes it easier to keep them secure.