July 31 (Reuters) - The following are the top stories in the Wall Street Journal. Reuters has not verified these stories and does not vouch for their accuracy.
  
   - The hackers behind the high-profile online break-in at Twitter Inc earlier this month talked their way onto the company's network using the telephone, the company said.
  
   - Affirm Inc is laying the groundwork for an initial public offering that could value the financial-technology startup at as much as $10 billion, according to people familiar with the matter.
  
   - Coca-Cola Co said it plans to launch a boozy version of its Topo Chico sparkling water in the U.S. next year, plunging the soda giant into the market for alcoholic beverages. 
    
  
  

(Compiled by Bengaluru newsroom)
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