By Eric Dutkiewicz
Customers of PNC Financial Services are being warned of a potential cyber attack. PNC officials says the company’s website is seeing heavier volumes of online traffic, which is often a sign of cyber attacks. The cyber attack can lock customers out of their services, slow down online banking or shutdown the website entirely. PNC has taken extra security measures to protect the company and customers. Citigroup, Chase and Wells Fargo have taken similar precautions.