Visa’s UK Network Outage: What You Need to Know
Visa Europe has attributed the widespread outage of its UK network on June 1 to a failed network switch in one of its two data centers
• Nine percent of the credit card swipes attempted that afternoon failed, Visa Europe CEO Charlotte Hogg wrote in a letter to the Parliament
• The unique nature of the failure meant the failover mechanism did not work as designed
• Visa’s European operations team has replaced the failed component and plans to install monitoring software, but a more long-term fix is in the works