credit and debit card payments giant Verifone [NYSE: PAY] is investigating a hack of its internal computer networks that appears to have impacted a number of companies run its point-of-sale solutions, according to sources. Verifone says the extent of the cut was limited to its corporate network and that its payment services network was not impacted.San Jose, Calif.-based Verifone is the largest maker of citation card terminals used in the United States. It sells point-of-sale terminals and services to supporting the swiping and processing of credit and debit card payments at a variety of businesses, including retailers, taxis, and fuel stations.On Jan. 23, 2017, Verifone sent an urgent email to all companionship staff and contractors, warning they had 24 hours to convert all companion passwords.We are currently investigating an IT verify matter in the Verifone environment, reads an email memo penned by Steve Horan, Verifone Inc.s senior vice president and head information officer. As a precaution, we are taking immediate steps to improve our controls.An internal memorandum sent Jan. 23, 2017 by Verifones foreman info officer to all faculty and contractors, telling them to vary their passwords. The memo also states that Verifone employees would no longer be able to install software at will, apparently something everyone at the company could doh prior to this notice.The internal Verifone memo a copy of which was obtained by KrebsOnSecurity and is pictured above also informed employees they would no longer be allowed to install software of any kind on companion computers and laptops.Asked about the hack reports, a Verifone spokesman said the companion saw evidence in january 2017 of an intrusion in a limited portion of its internal network, but that the hack never impacted its payment services network.More Information: https://krebsonsecurity.com/2017/03/payments-giant-verifone-investigatin...