After Nude Photo Hack, Should Cloud Users Be Worried?

PHOTO: A data center employee checks servers in Pantin, France on July 21, 2014.
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For anyone whose digital life needs some extra space, the cloud seems like a miraculous solution.

But after dozens of purported nude and risque photos of celebrities, including Jennifer Lawrence and Kate Upton, leaked online late Sunday, reportedly hacked from their personal cloud accounts, users might be concerned about their own cyber safety.

How the Cloud Really Works

Hackers Post Alleged Naked Pics of Jennifer Lawrence and More

"A lot of people don't understand how far their information is spreading," Clifford Neuman, the director of the USC Center for Computer System Security, told ABC News. "There's a lot more stuff that gets sucked into these sites than one would understand."

Many people use the cloud and don't even know it -- Google Drive and Dropbox are common examples.

Experts say that, to be safe, it's important to remember how the cloud works and that when you sync a device like your smartphone to the cloud, it creates two copies of files.

At least one of the hacked stars, Mary E. Winstead, said she deleted the leaked photos "long ago."

However, if you delete something from a device like a tablet or smartphone, it doesn't necessarily delete from the cloud, Neuman pointed out.

"You still have to go into the cloud account and delete it, in many cases," he said.

Another problem is passwords. If you use the same password for multiple accounts, as many people do, you're at greater risk. If one of your digital accounts is hacked and you're using the same password for your cloud account, hackers can also gain access to what's on your cloud.

"You should be using a different password for your cloud account than you do for other accounts," Neuman said.

People should also know that they can unlink their devices from the cloud.

"The downside, of course, is that if you lose your phone you lose everything that's on it, like photos," Neuman said.

Beyond the cloud, people should also be more careful about how they use WiFi networks, both when they're out and about and at home. Not taking precautions could make it all too easy for criminals to access private information.

Security expert Chester Wisniewski said that almost a quarter of wireless networks have weak or no protection, which could leave emails, financial accounts and anything else you do on line exposed.

"I can see their instant message conversations, the photos they're sharing," said Wisniewski, Senior Security Advisor at SOPHOS. "It's very easy for an intruder to see everything you're doing."

He said there are some simple tips people should remember to increase their security:

  • Put your router in the center of your home -- not near the window.
  • Make sure that your home router offers "WPA" or "WPA2" encryption. "WEP" encryption is outdated and easily cracked.
  • Always accept the software updates on your phone.
  • Watch those passwords -- make them difficult, the longer the better, and make sure you use unique passwords for all of your accounts.
  • The simplest way to protect yourself -- enable two-factor authentication, which requires you to enter a unique code in addition to your password when accessing your accounts. The code is usually sent to your phone via app or text message.
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