OpenAI warns macOS users to update ChatGPT and Codex apps after Axios supply chain scare

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OpenAI says a supply chain attack involving Axios briefly intersected with its macOS signing workflow. The company found no compromise but is rotating certificates and asking Mac users to update their apps before May 8.

OpenAI GPT-5.3 Instant makes ChatGPT feel less weird and more useful

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OpenAI has released GPT-5.3 Instant, a refinement of its most-used ChatGPT model that focuses on smoother conversations, fewer unnecessary refusals, better web-synthesized answers, and improved factual accuracy. Instead of flashy new features, this update targets tone, relevance, and flow, aiming to make ChatGPT feel less awkward and more genuinely helpful in daily use.

OpenAI introduces Lockdown Mode and Elevated Risk labels in ChatGPT to counter prompt injection threats

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OpenAI rolls out ChatGPT Lockdown Mode and new Elevated Risk labels, aiming to curb prompt injection attacks and strengthen AI security across connected workflows.

OpenAI launches Frontier to turn AI agents into coworkers

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OpenAI is pushing enterprises to treat AI agents like digital coworkers with its new Frontier platform. The technology aims to solve real deployment and governance problems, even if the name feels a little too generic for such an ambitious vision.