Patch Me If You Can: AI Codemods for Secure-by-Default Android Apps

Here's a 3-sentence summary of the engineering blog post: Meta's Friend Bubbles feature on Facebook Reels enhances social discovery by highlighting Reels liked or reacted to by friends, making it easier to connect over shared interests. To achieve this, the system combines social and interest signals to rank friend-interacted content and estimate relationship strength using machine learning models, emphasizing connection quality over quantity. The friend bubbles recommendation system includes components like Viewer-Friend Closeness and Video Relevance, which work together to surface relevant, high-quality content and improve user engagement.

Here's a 3-sentence summary of the blog post on Meta's Ranking Engineer Agent (REA): Meta's Ranking Engineer Agent (REA) is an autonomous AI agent that accelerates the ads ranking innovation at Meta by autonomously executing key steps across the end-to-end machine learning (ML) lifecycle. REA reduces the need for manual intervention, manages asynchronous workflows, and delivers 2x Model Accuracy and 5x Engineering Output in its first production rollout. Its capabilities include autonomously generating hypotheses, launching training jobs, debugging failures, and iterating on results, making it a critical component in Meta's advertising system that delivers personalized experiences to billions of people.