The nearly week-old cyber outage has left thousands of dealers across the U.S. and Canada unable to process appointments or complete sales transactions. Cyber security expert Scott Spiro weighs in.

After hours: February 13 at 6:38:08 PM EST Loading Chart for PRPL ...

The P/B ratio shows how a stock's market price compares to its book value. It helps gauge whether a stock is undervalued or overvalued relative to its net assets.

This week: Microsoft, Ivanti and Google release fixes for critical vulnerabilities and urge priority patching; Lee Enterprises confirms a cyberattack disrupted newspaper operations; and thousands of ...