The U.S. Space Force has paused the use of web-based generative artificial intelligence tools like ChatGPT for its workforce over data security concerns, according to a memo seen by Reuters. A memo dated Sept. 29 and addressed to Guardians, the name the Space Force calls its workforce, prohibits personnel from using such AI tools, including large-language models, on government computers until they receive formal approval by the force's Chief Technology and Innovation Office. It said the temporary ban was "due to data aggregation risks." Uses of generative AI, powered by large language models that ingest huge troves of past data to learn, have exploded in the past year, underpinning ever-evolving products such as OpenAI's ChatGPT that can swiftly generate content like text, images, or video off of a simple prompt. An Air Force spokesperson confirmed the temporary ban, which was first reported by Bloomberg.