CISO @ Meta, overseeing our work on safety & security

Joined July 2008
Guy Rosen retweeted
Mark Zuckerberg
@finkdJul 9
(1) Today we're releasing Muse Spark 1.1 -- a strong agentic and coding model at a very low price. It's available through our new Meta Model API and in Meta AI.
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Guy Rosen retweeted
We’ve taken part in a major operation to disrupt scam networks in SE Asia, leading to the arrests of 63 suspected scammers & the removal of over 1.4 million accounts on Facebook & Instagram. Taking down sophisticated global criminal networks requires industry & law enforcement to work together. This successful operation brought together @Meta, @Microsoft, @Coinbase, @Starlink, with @DOJ's Scam Center Strike Force, the @FBI, and global law enforcement. These syndicates exploit millions through romance scams, investment fraud, and forced labor, with their tactics constantly evolving across platforms and borders. That's exactly why this sort of cross-sector collaboration matters: together, industry & law enforcement can disrupt these networks faster. Grateful to @USAttyPirro for her leadership and @FBIDirectorKash and his team for bringing these criminals to justice. about.fb.com/news/2026/06/le…
63 arrests, millions of dollars in frozen cryptocurrency, and the removal of more than a million scam-related online accounts! Just cops being allowed to be cops! Thank you @Meta for your partnership in taking these thugs down. This is just the beginning!
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Today, academic journals Science and Nature have published four landmark research papers to better understand the impact of Facebook and Instagram on key political attitudes and behaviors during the US 2020 election cycle. about.fb.com/news/2023/07/re…
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Sharing a personal intimate image online can be scary and overwhelming, especially for young people. It can feel even worse when someone tries to use those images as a threat for more images, sexual contact or money — a crime known as sextortion. [a 🧵] youtube.com/watch?v=pAaXbBzV…
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Next month, Meta will become chair of cross-industry counter-terrorism organization @GIFCT_official. To mark that moment, we’re launching a new free tool to help platforms identify and remove violating content at scale. about.fb.com/news/2022/12/me… (1/2)
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It’s #NationalVoterRegistrationDay in the US, so we’re showing notifications on @facebook Feed and adding custom stickers on @instagram to help people find resources about the midterm elections. Learn more: about.fb.com/news/2022/08/me…
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There’s been a lot of discussion lately, driven by the points raised in Jonathan Haidt’s Atlantic article about social media’s impact on democracy and daily life in America. But the research tells a far more nuanced story. Here is Meta’s response: about.fb.com/news/2022/04/wh…
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1/ Earlier today, our teams identified and removed a deepfake video claiming to show President Zelensky issuing a statement he never did. It appeared on a reportedly compromised website and then started showing across the internet.
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Responding to reports that the Russian government is considering designating Meta as an extremist organization for its policies in support of speech:
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Our AI systems can now enforce a new content policy without needing tons of example data and months of training - it’s an amazing AI breakthrough that removes a serious bottleneck in @meta’s efforts to remove harmful content: protocol.com/enterprise/meta…
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1/ Like so many others, many of us at Facebook have been watching the tragic events unfolding in Afghanistan. My thoughts go out to everyone on the ground and everyone trying to help as these events unfold.
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Guy Rosen retweeted
Today we’re announcing three updates to protect people from racism and abuse on Instagram. We don’t allow hate speech or bullying on our platform, and we hope these new tools will help protect people from having to experience abuse.
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Moving Past the Finger Pointing: Support for COVID-19 vaccines is high on Facebook and growing. about.fb.com/news/2021/07/su…
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1/ Today we shared our IO Threat Report, an analytical paper that dives into the 150+ CIB takedowns across 50+ countries that FB’s Threat Intel team discovered over the past 3 years. The report IDs adversary TTPs, trends, and provides recs for tackling IO: about.fb.com/wp-content/uplo…
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Today, we are launching a new Transparency Center that we hope will give a clearer, more holistic view of our integrity enforcement work—and ultimately help external stakeholders more easily and effectively do their jobs (holding us to account!) → transparency.fb.com
Today we released our Community Standards Enforcement Report for Q1 2021: about.fb.com/news/2021/05/co…. As part of today, we're also launching a new Transparency Center, a single destination for all of our integrity and transparency efforts: transparency.fb.com/ (1/5)
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Guy Rosen retweeted
JUST OUT: 9 takedowns in our April CIB report. Primarily domestic ops: 👉Palestine, linked to Fatah; 👉Azerbaijan, linked to individuals associated with defence ministry; 👉Central African Republic, linked to local NGO; (More in next tweet...) about.fb.com/news/2021/05/ap…
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We've been tracking vaccine hesitancy since Dec 2020 via our Symptom Survey and providing daily data updates to help inform vaccine efforts by govts around the world. Given this week's news and some changes we’re seeing in the data, I want to share some additional insights 1/7
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Guy Rosen retweeted
Grateful to partner with @ravenswoodfhn to host a COVID-19 vaccination clinic at our Menlo Park headquarters. We're also partnering with nonprofits across CA to support other pop-up clinics. We hope to help up to 10K people get vaccinated, especially those hardest hit by COVID.
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Guy Rosen retweeted
JUST OUT: 14 takedowns in our March CIB report. Influence ops from: 👉Albania, targeting Iran; 👉Iran, targeting Israel; 👉Israel, domestic; 👉Spain/El Salvador, targeting El Salvador; (continues on next tweet…) about.fb.com/news/2021/04/ma…
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