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Search: “A2A Protect”

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Visa enhances A2A Protect to stop fraud before money leaves the account

Visa enhanced A2A Protect with a Featurespace-powered unified fraud score to help banks stop account-to-account fraud before funds leave accounts.

Visa announced an updated A2A Protect that integrates Featurespace technology into a unified fraud score, giving banks real-time risk insights on account-to-account payments without waiting for in-house model training or consortium participation. Visa claims a 75% increase in fraud detection within the first six months of deployment and a single API for integration. A2A transaction volume is projected to exceed 5.8 trillion by 2028, up 160% from 2024.

Help Net Security · 14d agoTools

When AI Agents Go Rogue: Agent Session Smuggling Attack in A2A Systems

Unit 42 unveils agent session smuggling, where a rogue AI agent hides covert instructions in established Agent2Agent (A2A) protocol sessions to manipulate victim agents.

Palo Alto Networks Unit 42 discovered agent session smuggling, a new attack technique in which a malicious AI agent exploits an established cross-agent session under the Agent2Agent (A2A) protocol to send covert instructions hidden among benign client requests and server responses. The technique leverages the implicit trust agents place in collaborating agents and the stateful, multi-turn nature of A2A sessions; the researchers stress it affects any stateful protocol, not an A2A flaw. Unlike one-shot data-based attacks, a rogue agent can converse, adapt and build false trust over multiple interactions. Proposed mitigations include human-in-the-loop enforcement, cryptographically signed AgentCards for remote agent verification, and context-grounding to detect injected instructions.

Palo Alto Unit 42 · 29d agoAI safety & security2