*By Carlo Versano*
Facebook shares dropped Friday afternoon after the company announced that 50 million accounts may have been compromised by hackers exploiting a security vulnerability.
Guy Rosen, the company's VP of product management, said the breach was discovered on Tuesday and affected its "View As" feature, which allows people to see what their own profile looks like to someone else. Rosen said the vulnerability has been patched.
"We’re taking this incredibly seriously and wanted to let everyone know what’s happened and the immediate action we’ve taken to protect people’s security," Rosen, wrote in a [blog post](https://newsroom.fb.com/news/2018/09/security-update/) on Friday.
Facebook ($FB) discovered that unknown attackers manipulated a piece of code that allowed them to steal security tokens that usually keep accounts logged in.
The post was light on detail and was seemingly intended to show the company's efforts at transparency, just months after it was pilloried for a mishandling of the Cambridge Analytica breach.
After that scandal, CEO Mark Zuckerberg [said](https://m.facebook.com/zuck/posts/10104712037900071) in a Facebook post, "We have a responsibility to protect your data, and if we can't, then we don't deserve to serve you."
From Wall Street to Silicon Valley, these are the top stories that moved markets and had investors, business leaders, and entrepreneurs talking this week on Cheddar.
A U.S. health panel says it’s time to resume use of Johnson & Johnson’s COVID-19 vaccine, despite a very rare risk of blood clots.
A growing coalition of private companies, nonprofits, and the federal government are pushing for a more unified approach towards COVID vaccination credentialing.
Republican Caitlyn Jenner says she will run for governor of California. Jenner says in statement posted Friday on Twitter that she has filed initial paperwork to run.
World leaders have joined President Joe Biden at a virtual climate summit to share their stories about how nations can break free of climate-damaging fossil fuels.
Phillippe and Ashlan Cousteau, co-authors of "Oceans for Dummies," joined Cheddar to discuss the outsized impact the Earth's seas have on the climate crisis.
A decades long-movement to reshape the American political map has taken an important further step.
NYC legalized recreational adult use marijuana but before the industry settles in, we're taking on to an underground NYC dinner party where the food is infused with cannabis. Cheddar's Chloe Aiello reports.
The leaders of Russia and China have put aside their raw-worded disputes with U.S. President Joe Biden long enough to pledge international cooperation on cutting climate-wrecking coal and petroleum emissions.
President Joe Biden is preparing to formally acknowledge that the systematic killing and deportation of hundreds of thousands of Armenians by the Ottoman Empire in modern-day Turkey more than a century ago was genocide.
