With its $2.3 billion acquisition of identity-protection-services seller LifeLock Inc., Symantec Corp. is looking to breathe new life into its consumer-product line, which has long been defined by Norton antivirus products.

Symantec said it would keep both brands and integrate LifeLock with Norton’s offerings into a single product line after the acquisition closes, expected early next year. The goal is to give consumers a one-stop shop for identity-theft and computer-protection products.

“We...