Bye-bye, wires: a new generation of super-fast wireless networking gear is arriving in stores.

But don't buy anything just yet, some tech experts say.

Gear maker Linksys last week launched its first products using a new kind of wireless Internet, or Wi-Fi, technology. Called 802.11n, the new Wi-Fi is almost twice as fast as the speediest older version. And it's designed for multiple data streams, which makes it easier to download music and stream a movie from the Internet at the same time.
 

Two cybersecurity surveys released Monday underscore an ominous shift in Web intrusions: They are becoming more stealthy and targeted - and honed to make a quick buck.
 
 Profit-minded intruders are increasingly carrying out "zero-day" attacks that exploit new security vulnerabilities on the same day such flaws become generally known, weeks before patches are available, according to The SANS Institute security training center.