Now, advances in technology are making the maintenance schedule much more user-friendly than it used to be, and also making it easier for mechanics to diagnose and correct problems.

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Wi-Fi, a wireless networking technology, is making it possible for calls to be routed over the internet, at no additional cost to the user.

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Whitehat Security's Grossman speculates that machines running that software were targeted because they allow several commands to be injected in a single user input field on the sites they host, making those sites easier to hijack.

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If very strict rules are imposed about user data, then ads cannot be targeted, lowering their value and thus, possibly, making the services uneconomic.

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