A ransomware attack on Blue Yonder over the weekend is affecting Starbucks' ability to track employee hours on Monday.

We speak to experts about the supply chain ransomware attack against Blue Yonder has affected dozens of retailers, including Starbucks and Morrisons.

Starbucks stores are using pen and paper to track employee hours after attack Third-party Vendor Blue Yonder hit with ransomware attack Retail stores in the UK and US affected Starbucks may be the largest coffee chain in the world,