From 2011 to 2017, Mac worked as a staff writer for
Forbes, compiling their annual
list of billionaires before transitioning into covering tech startups and companies. Mac also continued to cover music, interviewing top-earning DJs such as
Calvin Harris,
Steve Aoki, and
Avicii., and American rapper
Riff Raff in 2014. In 2016, Mac reported on
Peter Thiel, who had been secretly funding
Hulk Hogan's lawsuit against
Gawker (Bollea v. Gawker). Alongside reporter Matt Drange, Mac was a 2017
Gerald Loeb Award finalist in the 'Breaking News Category' for their coverage of Gawker. From 2017 to 2021, Mac worked as a senior technology reporter for
BuzzFeed News. In 2018, Mac reported on
Elon Musk and Vernon Unsworth, a British
cave diver who played an instrumental role in the
Tham Luang cave rescue. Mac released a series of email correspondences that revealed Musk had accused Unsworth of being a "child rapist" who had "married a child". Both these claims by Musk were found to be false. Mac was one of ten journalists whose accounts were suspended on X (formerly
Twitter) by Elon Musk on
December 15, 2022. Mac's Twitter account was unsuspended by Musk 2 days later. In September 2024, Mac and co-author
Kate Conger released
Character Limit: How Elon Musk Destroyed Twitter, which covers Musk's
$44-billion-dollar acquisition of Twitter. ==Personal life==