Worst cybersecurity meltdowns
Most computer-security professionals don't believe in security. To those who know better, a computer network can never be "secure"--only "more secure." In other words: No data is absolutely safe.
"There's a vulnerability in every system," says James Lewis, researcher at the Center for Strategic and International Studies, a public policy research organization in Washington, D.C. If it's not a faulty firewall or an unprotected mobile device, he says, "it can be as simple as an employee's password written on a yellow post-it note."
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