After introducing the Chat Lock feature in May, WhatsApp has added something called “secret code,” for an additional layer of privacy protection for extremely sensitive conversations. A secret code makes sensitive chats “harder to find if someone has access to your phone or you share a phone with someone else,” the Meta Platforms subsidiary says. With a secret code, users can set a unique password — different from that which normally unlocks the phone — to give locked chats an extra layer of privacy. An additional option allows the Locked Chats folder to be hidden from the general chatlist. Read more

Sam Altman has wasted no time since being rehired as CEO of OpenAI on November 22, four days after being fired. This week, the 38-year-old leader of one of the most influential artificial intelligence firms outlined his “immediate priorities” and announced a newly constituted “initial board” that includes a non-voting seat for investor Microsoft. The three voting members thus far include former Salesforce co-CEO Bret Taylor as chairman and former U.S. Treasury Secretary Larry Summers — both newcomers — and sophomore Adam D’Angelo, CEO of Quora. Mira Murati, interim CEO during Altman’s brief absence, returns to her role as CTO. Read more

Amazon is debuting its Titan Image Generator in preview for AWS Bedrock customers. The new Titan generative AI model can create new images from a text prompt or existing image, and automatically adds watermarking to protect intellectual property. The move into generative imaging puts Amazon in competition with a growing field that includes large firms like Adobe and Google. Unlike those companies and others, the e-retail giant is at present focusing exclusively on enterprise customers. Amazon Bedrock is a managed service giving developers access to a range of foundation models from companies including Meta Platforms, Anthropic, and Amazon itself. Read more

Amazon has launched five new capabilities to its SageMaker service, including Sagemaker HyperPod, which accelerates large language and foundation model training and tuning. Sagemaker HyperPod is said to shorten the training time by up to 40 percent using its purpose-built infrastructure designed for distributed training at scale. By optimizing acceleration, SageMaker Inference reduces foundation model deployment costs by 50 percent and latency by 20 percent on average, Amazon claims. “SageMaker HyperPod removes the undifferentiated heavy lifting involved in building and optimizing machine learning infrastructure,” said Amazon. Read more

Amazon Web Services is introducing Amazon Q, an AI chatbot geared toward enterprise clients who can customize it to increase productivity for their specific business needs. AWS also announced that it has updated its homegrown Graviton4 chips for a 30 percent performance boost. AWS confirmed it will be the first Big Tech firm to deploy the latest version of Nvidia’s Grace Hopper Superchip AI accelerator, and additionally will become a data center host for Nvidia’s DGX Cloud service. The announcements were disclosed at the AWS re:Invent conference in Las Vegas. Read more