The other carriers Skycure evaluated were Verizon, Sprint, T-Mobile and MetroPCS. Skycure didn't offer an explanation for why so many AT&T users loaded the latest patch.
In general, Skycure joined other security experts in recommending users update to the latest patch as soon as it is available. The company also advised to only download apps from trusted first party app stores and to avoid connecting to suspicious free Wi-Fi networks.
Skycure, like many other companies, offers a free threat defense app called Skycure in both the App Store and Google Play. The company offers enterprise Skycure security software as a service starting at less than $8 per device per month.
Even with such defenses, Newkirk said phone users need to back up their vital personal data, like videos and photos, in the event their phone is lost or stolen or attacked in a way that locks it or makes access to data impossible.
"It may seem obvious, but I can't tell you the number of people who don't do the basics like backing up their phones for pictures, etc.," she said in an email. "I'm always astounded by that. It's advice I give to everyone. And yet people don't do it."
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