四级模拟卷 3 · 仔细阅读（第1篇）打字练习
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Worried about Internet companies spying on your online browsing? You might turn to something called a
virtual private network to protect your privacy. But researchers say these networks can themselves be insecure.
Earlier this year, the federal government rolled back rules that would have prevented Internet service
providers from tracking your activity online. Comcast, AT&T and other providers are now allowed to track and
sell your personal date too—with much less fear of regulatory action.
One solution is a VPN, which is like a dark, secret tunnel you use to go from your computer to a website.
While you’re inside the tunnel—clicking on Instagram photos or checking your bank account—third parties can’t
see what you’re doing. There are lots of reasons people around the world use VPNs: to hide location, to access
work networks, even to avoid government censorship(审查).
Internet providers handle customer privacy in different ways. Some say you have to opt in for them to sell
your data. Because of Internet-connected devices, providers can see more than the websites you browse.
So, who cares whether Time Warner Cable or Verizon knows when I turn off my lights or whether I stock my
For one thing, those data points can be used to target advertising. And the government or private companies
could use the information to deny services, like health insurance—or even water.
Some VPNs promise anonymous(匿名的)browsing for free or just a few dollars a month; they claim not to
share your data. But these services don’t always deliver on their promises. Sometimes the medicine might be
worse than the illness. In the first major review of VPN providers, what researchers found was alarming. Nearly
Experts suggest researching a VPN before using it and to think of it as a supplementary tool, not a privacy
solution. They advise reading the VPN service provider’s privacy policy to see whether it collects or retains any
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