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Customers use ATMs at a Wells Fargo Bank branch office on July 12, 2012 in Daly City, California.

Yesterday was a day full of disruptions for Wells Fargo customers, as they couldn’t reliably access the company’s website.

This was a result of cyber attacks that were launched in response to the YouTube video insulting Muhammad, by a group calling itself Izz ad-Din al-Qassam Cyber.

We talk to security expert Brian Krebs to find out more about the cyber attack.

Guest:

Brian Krebs, former Washington Post reporter who runs the website Krebs on Security