New York CNN —Three weeks after the murder of UnitedHealthcare CEO Brian Thompson, companies and executives are closely monitoring threats from customers and shoring up their security vulnerabilities. A Texas man was arrested Friday for allegedly threatening Capital One executives over email, in which he expressed frustration over a disputed debt. Letters like these are commonplace and show the continued tension between corporate America and its customers. Republicans and Democrats have similarly negative opinions of large corporations – just 32% of Republicans and 26% of Democrats view their impact positively. There are always disgruntled and deranged emailers out there – with heightened concerns only for health insurance execs.”But in the wake of the UnitedHealthcare CEO’s murder, companies have stepped up security measures.

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Persons: Brian Thompson, Taylor Bullard, ” Bullard, “, Jeffrey Sonnenfeld, ”, Luigi Mangione, Stephen Ward, Ward, Hanna Organizations: New, New York CNN, FBI, America, Republicans, Pew Research Center, Pew, Democrats, Yale School of Management, New York City Police Department, CNN, Polaris Corporate Risk Management, Polaris, “ Locations: New York, Texas, New