OpenAI Launches Lockdown Mode to Block Prompt Injection Data Theft

Title: AI Security Tightens as Government Eyes OpenAI Stake

01OpenAI Launches Lockdown Mode to Block Prompt Injection Data Theft

OpenAI has unveiled Lockdown Mode, a new security feature designed to prevent sensitive data from being exfiltrated through prompt injection attacks. The feature limits outbound network requests that could transfer confidential information to attackers, addressing a critical vulnerability in enterprise AI deployments. OpenAI first teased this capability in February, and it is now rolling out to eligible personal accounts, including Free, Go, Plus, and Pro tiers, as well as self-serve ChatGPT Business accounts. The feature targets the final stage of data exfiltration rather than preventing prompt injections from appearing in content. Even with Lockdown Mode enabled, ChatGPT could still be vulnerable to prompt injections, but the goal is to reduce the likelihood that sensitive data gets shared in the process.

02Trump Administration Considering Equity Stake in OpenAI

The Trump administration is exploring taking a direct ownership stake in OpenAI, a move that would represent unprecedented government involvement in a major AI company. President Donald Trump indicated that his administration is discussing deals "where the American people can benefit from the success of AI." The potential equity stake signals a shift toward direct government investment in AI infrastructure and companies, moving beyond traditional regulatory and policy approaches. This development comes amid broader discussions about national AI competitiveness and the role of government in shaping emerging technology sectors. The proposal has raised questions about potential conflicts of interest and the implications of government ownership in a leading AI laboratory.

03Apple WWDC 2026 Set to Deliver Major Siri Overhaul and Apple Intelligence Expansions

Apple's annual developer conference is poised to unveil a comprehensive redesign of Siri alongside significant expansions to Apple Intelligence. The company is expected to announce Siri's highly anticipated revamp along with broader AI capabilities for iOS and macOS. The conference marks Apple's most aggressive push into generative AI, responding to competitive pressures from Microsoft Copilot and Google Gemini. The Siri overhaul represents the most significant change to Apple's voice assistant since its 2011 launch, incorporating advanced language understanding and contextual awareness. Apple Intelligence updates will extend AI capabilities across the company's hardware ecosystem, including iPhone, iPad, and Mac.

Also today

04Sriram Krishnan Departing White House AI Advisor Role — Top Trump administration AI policy advisor to leave at month end, reportedly to launch a policy institution staffed by engineers to support White House AI initiatives.
05Meta Confirms Thousands of Instagram Accounts Hacked via AI Chatbot — Security researchers revealed that attackers exploited Meta's AI chatbot to compromise thousands of Instagram accounts through social engineering.
06Google to Pay SpaceX $920M Monthly for xAI Compute Capacity — Google has agreed to spend over $11 billion annually on compute infrastructure at xAI data centers, a massive AI infrastructure deal.
07S&P 500 Rejects SpaceX IPO, Blocks Fast-Track Entry for OpenAI and Anthropic — Index committee rejected SpaceX's fast-track inclusion and will maintain profitability requirements that exclude unprofitable AI firms like OpenAI and Anthropic.
08Micropython-WASM Enables Python Sandboxing via WebAssembly — New alpha release allows running Python code in a secure WebAssembly sandbox, providing a safe code execution environment for AI applications.
09HuggingFace Blog: Building Multi-Model Finance Drama with Small Models — Developer community explores efficient small language models for specialized applications in a multi-lab collaborative hackathon.
10Nvidia Proposes High-Performance CPU System for Windows PCs — Nvidia announced a powerful CPU architecture designed for Windows PCs, signaling continued hardware competition in AI-capable computing.