Take a look at OUCH!, a monthly security awareness newsletter from SANS:
The May issue of OUCH! explains how you can safely dispose of your mobile devices thus reducing the risk of exposing personal data.
Overview from the newsletter:
Mobile devices, such as smartphones and tablets, continue to advance and innovate at an astonishing rate. As a result, many of us replace our mobile devices as often as every 18 months. A key question becomes, What are you doing with your older devices? Many people simply dispose of their older mobile devices with little thought about all the personal data they have accumulated. However, a surprising amount of personal information is stored on these older devices. If your devices are not securely wiped before disposal, this information can easily be recovered, exposing you or your organization to tremendous risk.
Other cyber security awareness resources are available from the SANS Securing The Human Program, so take a look and let us know if you find anything particularly useful.
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