Parler is back online and Omnicom hit by cyber attack: Tuesday Wake-Up Call

Welcome to Ad Age’s Wake-Up Call, our daily roundup of advertising, marketing, media and digital news. If you're reading this online or in a forwarded email, here's the link to sign up for our Wake-Up Call newsletters. Look who’s backGood morning and we hope you all had a good President's Day weekend. Among the stories breaking over the holiday: Parler is back online. The controversial right-wing social network has returned to the internet after its previous service provider, Amazon,