📌 TOPINDIATOURS Update ai: Visa just launched a protocol to secure the AI shopping

Visa is introducing a new security framework designed to solve one of the thorniest problems emerging in artificial intelligence-powered commerce: how retailers can tell the difference between legitimate AI shopping assistants and the malicious bots that plague their websites.

The payments giant unveiled its Trusted Agent Protocol on Tuesday, establishing what it describes as foundational infrastructure for "agentic commerce" — a term for the rapidly growing practice of consumers delegating shopping tasks to AI agents that can search products, compare prices, and complete purchases autonomously.

The protocol enables merchants to cryptographically verify that an AI agent browsing their site is authorized and trustworthy, rather than a bot designed to scrape pricing data, test stolen credit cards, or carry out other fraudulent activities.

The launch comes as AI-driven traffic to U.S. retail websites has exploded by more than 4,700% over the past year, according to data from Adobe cited by Visa. That dramatic surge has created an acute challenge for merchants whose existing bot detection systems — designed to block automated traffic — now risk accidentally blocking legitimate AI shoppers along with bad actors.

"Merchants need additional tools that provide them with greater insight and transparency into agentic commerce activities to ensure they can participate safely," said Rubail Birwadker, Visa's Global Head of Growth, in an exclusive interview with VentureBeat. "Without common standards, potential risks include ecosystem fragmentation and the proliferation of closed loop models."

The stakes are substantial. While 85% of shoppers who have used AI to shop report improved experiences, merchants face the prospect of either turning away legitimate AI-powered customers or exposing themselves to sophisticated bot attacks. Visa's own data shows the company prevented $40 billion in fraudulent activity between October 2022 and September 2023, nearly double the previous year, much of it involving AI-powered enumeration attacks where bots systematically test combinations of card numbers until finding valid credentials.

Inside the cryptographic handshake: How Visa verifies AI shopping agents

Visa's Trusted Agent Protocol operates through what Birwadker describes as a "cryptographic trust handshake" between merchants and approved AI agents. The system works in three steps:

First, AI agents must be approved and onboarded through Visa's Intelligent Commerce program, where they undergo vetting to meet trust and reliability standards. Each approved agent receives a unique digital signature key — essentially a cryptographic credential that proves its identity.

When an approved agent visits a merchant's website, it creates a digital signature using its key and transmits three categories of information: Agent Intent (indicating the agent is trusted and intends to retrieve product details or make a purchase), Consumer Recognition (data showing whether the underlying consumer has an existing account with the merchant), and Payment Information (optional payment data to support checkout).

Merchants or their infrastructure providers, such as content delivery networks, then validate these digital signatures against Visa's registry of approved agents. "Upon proper validation of these fields, the merchant can confirm the signature is a trusted agent," Birwadker explained.

Crucially, Visa designed the protocol to require minimal changes to existing merchant infrastructure. Built on the HTTP Message Signature standard and aligned with Web Both Auth, the protocol works with existing web infrastructure without requiring merchants to overhaul their checkout pages. "This is no-code functionality," Birwadker emphasized, though merchants may need to integrate with Visa's Developer Center to access the verification system.

The race for AI commerce standards: Visa faces competition from Google, OpenAI, and Stripe

Visa developed the protocol in collaboration with Cloudflare, the web infrastructure and security company that already provides bot management services to millions of websites. The partnership reflects Visa's recognition that solving bot verification requires cooperation across the entire web stack, not just the payments layer.

"Trusted Agent Protocol supplements traditional bot management by providing merchants insights that enable agentic commerce," Birwadker said. "Agents are providing additional context they otherwise would not, including what it intends to do, who the underlying consumer is, and payment information."

The protocol arrives as multiple technology giants race to establish competing standards for AI commerce. Google recently introduced its Agent Protocol for Payments (AP2), while OpenAI and Stripe have discussed their own approaches to enabling AI agents to make purchases. Microsoft, Shopify, Adyen, Ant International, Checkout.com, Cybersource, Elavon, Fiserv, Nuvei, and Worldpay provided feedback during Trusted Agent Protocol's development, according to Visa.

When asked how Visa's protocol relates to these competing efforts, Birwadker struck a collaborative tone. "Both Google's AP2 and Visa's Trusted Agent Protocol are working toward the same goal of building trust in agent-initiated payments," he said. "We are engaged with Google, OpenAI, and Stripe and are looking to create compatibility across the ecosystem."

Visa says it is working with global standards bodies including the Internet Engineering Task Force (IETF), OpenID Foundation, and EMVCo to ensure the protocol can eventually become interoperable with other emerging standards. "While these specifications apply to the Visa network in this initial phase, enabling agents to safely and securely act on a consumer's behalf requires an open, ecosystem-wide approach," Birwadker noted.

Who pays when AI agents go rogue? Unanswered questions about liability and authorization

The protocol raises important questions about authorization and liability when AI agents make purchases on behalf of consumers. If an agent completes an unauthorized transaction — perhaps misunderstanding a user's intent or exceeding its delegated authority — who bears responsibility?

Birwadker emphasized that the protocol helps merchants "leverage this information to enable experiences tied to existing consumer relationships and more secure checkout," but he did not provide specific details ab…

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🔗 Sumber: venturebeat.com

📌 TOPINDIATOURS Update ai: Adobe Research Unlocking Long-Term Memory in Video Worl

Video world models, which predict future frames conditioned on actions, hold immense promise for artificial intelligence, enabling agents to plan and reason in dynamic environments. Recent advancements, particularly with video diffusion models, have shown impressive capabilities in generating realistic future sequences. However, a significant bottleneck remains: maintaining long-term memory. Current models struggle to remember events and states from far in the past due to the high computational cost associated with processing extended sequences using traditional attention layers. This limits their ability to perform complex tasks requiring sustained understanding of a scene.

A new paper, “Long-Context State-Space Video World Models” by researchers from Stanford University, Princeton University, and Adobe Research, proposes an innovative solution to this challenge. They introduce a novel architecture that leverages State-Space Models (SSMs) to extend temporal memory without sacrificing computational efficiency.

The core problem lies in the quadratic computational complexity of attention mechanisms with respect to sequence length. As the video context grows, the resources required for attention layers explode, making long-term memory impractical for real-world applications. This means that after a certain number of frames, the model effectively “forgets” earlier events, hindering its performance on tasks that demand long-range coherence or reasoning over extended periods.

The authors’ key insight is to leverage the inherent strengths of State-Space Models (SSMs) for causal sequence modeling. Unlike previous attempts that retrofitted SSMs for non-causal vision tasks, this work fully exploits their advantages in processing sequences efficiently.

The proposed Long-Context State-Space Video World Model (LSSVWM) incorporates several crucial design choices:

1. Block-wise SSM Scanning Scheme: This is central to their design. Instead of processing the entire video sequence with a single SSM scan, they employ a block-wise scheme. This strategically trades off some spatial consistency (within a block) for significantly extended temporal memory. By breaking down the long sequence into manageable blocks, they can maintain a compressed “state” that carries information across blocks, effectively extending the model’s memory horizon.
2. Dense Local Attention: To compensate for the potential loss of spatial coherence introduced by the block-wise SSM scanning, the model incorporates dense local attention. This ensures that consecutive frames within and across blocks maintain strong relationships, preserving the fine-grained details and consistency necessary for realistic video generation. This dual approach of global (SSM) and local (attention) processing allows them to achieve both long-term memory and local fidelity.

The paper also introduces two key training strategies to further improve long-context performance:

• Diffusion Forcing: This technique encourages the model to generate frames conditioned on a prefix of the input, effectively forcing it to learn to maintain consistency over longer durations. By sometimes not sampling a prefix and keeping all tokens noised, the training becomes equivalent to diffusion forcing, which is highlighted as a special case of long-context training where the prefix length is zero. This pushes the model to generate coherent sequences even from minimal initial context.
• Frame Local Attention: For faster training and sampling, the authors implemented a “frame local attention” mechanism. This utilizes FlexAttention to achieve significant speedups compared to a fully causal mask. By grouping frames into chunks (e.g., chunks of 5 with a frame window size of 10), frames within a chunk maintain bidirectionality while also attending to frames in the previous chunk. This allows for an effective receptive field while optimizing computational load.

The researchers evaluated their LSSVWM on challenging datasets, including Memory Maze and Minecraft, which are specifically designed to test long-term memory capabilities through spatial retrieval and reasoning tasks.

The experiments demonstrate that their approach substantially surpasses baselines in preserving long-range memory. Qualitative results, as shown in supplementary figures (e.g., S1, S2, S3), illustrate that LSSVWM can generate more coherent and accurate sequences over extended periods compared to models relying solely on causal attention or even Mamba2 without frame local attention. For instance, on reasoning tasks for the maze dataset, their model maintains better consistency and accuracy over long horizons. Similarly, for retrieval tasks, LSSVWM shows improved ability to recall and utilize information from distant past frames. Crucially, these improvements are achieved while maintaining practical inference speeds, making the models suitable for interactive applications.

The Paper Long-Context State-Space Video World Models is on arXiv

The post Adobe Research Unlocking Long-Term Memory in Video World Models with State-Space Models first appeared on Synced.

🔗 Sumber: syncedreview.com