Arctic Wolf Launches Decipio — A Defense-First AI Tool to Catch Credential Theft at the Moment Attackers Strike
AI / Cyber Security | 4 min read
Arctic Wolf® (Eden Prairie, Minnesota; the cybersecurity and AI company), powered by the Aurora® Superintelligence Platform, has announced the release of Decipio — a community-shared defensive cybersecurity tool designed to help security teams catch attackers at the moment they attempt to steal credentials inside a network. Credential theft remains one of the most common ways cyberattacks begin and one of the hardest to detect early. Arctic Wolf's annual threat research consistently identifies stolen credentials as a primary initial access vector — and in the 2026 Arctic Wolf Threat Report, phishing and credential abuse were found responsible for the vast majority of confirmed business email compromise (BEC) incidents. Decipio was built to break that pattern by exposing credential-stealing activity early in the process, rather than after stolen credentials have already been used to move laterally or cause damage. It is being released as a limited, gated community beta — giving security practitioners hands-on access to the tool while intentionally avoiding fully open-source release, which Arctic Wolf notes could accelerate the very attacker behaviour defenders are trying to detect, particularly in an era of large-scale AI scraping and automated code reuse.
"As attackers automate faster and operate more quietly, defenders can't afford to only respond after the damage is done."
— Ismael Valenzuela, VP of Threat Intelligence Research, Arctic Wolf
How Decipio Works — Turning Attacker Behaviour Into a Giveaway
Decipio targets a specific and persistent Windows network credential-stealing technique: the abuse of LLMNR (Link-Local Multicast Name Resolution) and NBT-NS (NetBIOS Name Service). When a computer cannot find another system on a network, it broadcasts requests to nearby devices for help. Attackers listen for those requests and respond as if they are the requested system — tricking computers into handing over credential information. Decipio flips this attacker behaviour into a giveaway: the tool sends out carefully crafted network requests for fake network resources that should never exist. Legitimate systems ignore them. Attackers cannot. If something responds, Decipio knows suspicious credential-stealing activity is underway. The result is a binary, early-warning signal requiring only a minimal tuning process and minimal historical context — with Decipio confirming the behaviour, capturing clear evidence, and presenting it in a form defenders can immediately understand and investigate. Most security tools focus on detecting the fallout of an attack — suspicious behaviour, lateral movement, or misuse that appears after credentials have already been stolen. Decipio takes a fundamentally different approach: setting a simple early-warning tripwire that attackers unknowingly trigger in the act of attempting credential theft, before they have established a deeper foothold.
"Decipio represents a defense-first approach to AI-powered attacks that is designed to catch threat actors the moment they reveal themselves and gives defenders the home-field advantage."
— Ismael Valenzuela, VP of Threat Intelligence Research, Arctic Wolf
Community Beta, Aurora Platform, and Arctic Wolf's Broader AI Security Strategy
Decipio's gated community beta approach reflects a deliberate position in the ongoing debate over how defensive security tools should be distributed when the same underlying techniques can be studied and adapted by attackers — particularly as AI systems make it easier to scrape, copy, and reuse code and methods at scale. Access is limited to verified defenders to reduce the risk of misuse while allowing practitioners to test the product and provide feedback in a community-led development process. Decipio is designed to be deliberately narrow in focus — practical and precise, targeting one persistent attack technique with minimal noise. It sits within Arctic Wolf's broader security portfolio, which is powered by the Aurora® Superintelligence Platform combining AI-driven automation with expert-validated precision. Arctic Wolf was also recently named a 2026 Gartner® Peer Insights™ Customers' Choice for Managed Detection and Response, and has separately launched the world's largest commercial Agentic SOC and unveiled the Aurora Superintelligence Platform in March 2026.
Key Takeaways
- • Arctic Wolf (Eden Prairie, Minnesota; cybersecurity and AI company; VP Threat Intelligence Research Ismael Valenzuela; Aurora® Superintelligence Platform; 2026 Gartner Peer Insights Customers' Choice for MDR) has released Decipio — a community-shared defensive cybersecurity tool for catching credential theft at the moment of the attack attempt, not after credentials have already been used for lateral movement or damage.
- • Why credential theft is the target: stolen credentials are the primary initial access vector identified in Arctic Wolf's annual threat research. The 2026 Arctic Wolf Threat Report found phishing and credential abuse responsible for the vast majority of confirmed BEC (business email compromise) incidents. Credentials remain one of the most reliable and scalable entry points attackers have. Most existing tools detect credential misuse after it has happened; Decipio is designed to catch the theft in the act.
- • How Decipio works: targets LLMNR and NBT-NS abuse — Windows network protocols attackers exploit by listening for broadcast requests and responding as if they are the requested system, tricking computers into handing over credentials. Decipio inverts this: it sends carefully crafted requests for fake network resources that should never exist. Legitimate systems ignore them. Attackers cannot. Any response signals suspicious activity. Binary early-warning signal; minimal tuning; minimal historical context required; clear evidence captured and presented for immediate investigation.
- • Gated beta rationale: Decipio is released as a limited, gated community beta — not fully open-sourced. Arctic Wolf notes that fully open-sourcing tools like this can accelerate the very attacker behaviour defenders are trying to detect, especially as AI systems enable large-scale scraping and automated code reuse. Access is limited to verified defenders to reduce misuse risk while enabling community-led feedback and development. This reflects a broader cybersecurity industry debate over the appropriate distribution model for dual-use defensive tools in the AI era.
- • Arctic Wolf broader context: Decipio complements Arctic Wolf's Aurora® Superintelligence Platform (March 2026), the world's largest commercial Agentic SOC, and its suite of services including Managed Detection and Response, Managed Risk, Managed Security Awareness, and Incident Response. The dual dynamic driving Decipio's development — attackers automating faster/operating more quietly with AI while defenders must intervene earlier — illustrates the central challenge of AI-era cybersecurity: AI makes both attack (phishing, credential abuse at scale) and defence (early-warning automation, AI-assisted workflows) faster and more scalable simultaneously. Access to Decipio beta: arcticwolf.com/decipio.