This week’s top story: Walmart tests cashierless retail amid an industry-wide labor shortage, opening the door for fraudsters. Also this week, we discuss why a UK man was arrested over Twitter celebrity hacks, what’s behind Biden’s meeting next month with the private sector on cyber issues, why the Russian hacker ‘bot master’ was sentenced to prison in the US, and how consumers will drive the next wave of payments technology. #Kount5in5