Index_V

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U

Unicode characters, 361

United Kingdom, spam in, 273

United States, as top spam-sending country, 334–335

UNIX-based computers, 80, 81

unsubscribing, 110–111, 112, 113, 362

U.S. Federal Trade Commission (FTC), 270–271, 274, 361

USA Prescriptions, 146–147

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