Just before Zuckerberg bought Instagram, he identified a now defunct social startup as Facebook’s biggest threat

Mark Zuckerberg is photographed through a car window. (Credit: Kent Nishimura/Bloomberg via Getty Images)

• As Facebook considered acquiring Instagram, Mark Zuckerberg also had his eye on Path, a social media platform he saw as potentially disruptive to Facebook. Old emails revealed during Meta's landmark antitrust case have shed light on how Zuckerberg accessed Facebook's old rivals.

Before Mark Zuckerberg acquired Instagram, he was also deeply worried about a now defunct social media platform, Path.