Hollywood spy gadgets used at home, office

Fortunately, there are less costly countermeasures. Inexpensive gadgets can detect radio signals given off by hidden cameras and recorders. Jammers can block GPS and cell-phone signals.

As for computer surveillance, be wary of public wireless Internet hot spots. Make sure your security software is current. Look for suspicious computer attachments. And use encryption software to make intercepted messages unreadable.

Kim Komando hosts the nation's largest talk radio show about computers and the Internet. To get the podcast or find the station nearest you, visit: www.komando.com/listen. To subscribe to Kim's free e-mail newsletters, sign up at: www.komando.com/newsletters. Contact her at gnstech@gns.gannett.com.

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