One morning last April, a wave of thousands of robocalls that spread like a virus from one phone line to the next at Tufts Medical Center in Boston disrupting communications for hours, according to an article on The Washington Post website.
For hospitals, the spam calls amount to a life-or-death challenge, according to the article
At Tufts, administrators registered more than 4,500 calls between about 9:30 and 11:30 a.m. on April 30, 2018.
Many of the messages seemed to be the same: Speaking in Mandarin, an unknown voice threatened deportation unless the person who picked up the phone provided their personal information.
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