SInce then, the accounts have been resecured, a spokesman from the social media platform said on Monday.
Zuckerberg's Twitter account, @finkd, last used in January 2012, posted a tweet on Sunday with the message, "Hey, @finkd You were in LinkedIn Datatbase with the password 'dadada' ! DM (direct message) for proof," according to a screenshot posted to Twitter by Ben Hall (@Ben_Hall), founder of Katacoda, an interactive learning platform for software developers.
The tweet appeared to ask Zuckerberg to contact the sender, who claimed to have accessed his account.
Zuckerberg's Pinterest page, meanwhile, was defaced with the headline "Hacked By OurMine Team" according to a screengrab of the page posted by VentureBeat.
"Hey , we are just testing your security ,please dm (direct message) us for contact! twitter: twitter.com/_OurMine_," the compromised page said in a message that seemingly identified the hackers as being associated with the linked Twitter account.
The Twitter page associated with that account, @_OurMine_, has since been suspended.
"A number of other online services have seen millions of passwords stolen in the past several weeks," a Twitter spokesperson said. "We recommend people use a unique, strong password for Twitter."