NEW YORK (AP) — The Equifax breach is reminding small business owners that they may be vulnerable to cybercriminals.

Companies that provide security and other technology services to small businesses say they've had an increase in calls from customers since Equifax revealed that the personal information of 143 million Americans had been exposed. The hack galvanized some owners into dealing with long-delayed issues.

"A customer called me today wanting to replace their one remaining XP computer," says Bob Herman, owner of IT Tropolis, a tech service company in Fountain Valley, California. Microso...