Alex Katz is the founder and chief executive officer of Kerberus, a Web3 cybersecurity company best known for Sentinel3, a browser-based security extension designed to help users avoid phishing, wallet drainers, and other transaction-level threats. Katz has positioned Kerberus around a consumer-first security model that focuses on preventing losses at the moment of interaction, rather than relying only on protocol audits or post-incident recovery.
Overview
Katz leads Kerberus with an emphasis on operations, distribution, and product adoption. Public company materials describe his background as spanning marketing, growth, and finance, with experience scaling teams and launching consumer-facing products. Company profiles also list Thailand as a base of operations, reflecting Kerberus’ early growth in Southeast Asia alongside its broader push into global Web3 security markets.
History and Background
Kerberus was founded in 2022, with Katz serving as CEO and co-founder. Public profiles describe his earlier work across marketing and operations roles prior to moving into Web3 security. In Kerberus’ positioning, Katz’s role centers on making security tools accessible to mainstream users, including clear warnings, minimal setup, and high signal alerts that can be understood under time pressure.
Kerberus has been listed under a prior name, MintDefense, in third-party startup databases, indicating an early branding iteration before settling on the current identity. The company’s narrative ties its origin to repeated user losses from phishing and drainer campaigns, a problem area frequently covered in CryptoSlate’s Scams News section.
Core Products and Services
Kerberus’ flagship product is Sentinel3, a security extension designed to detect and block malicious websites and suspicious transaction patterns. The company describes Sentinel3 as “hands-off,” meaning it aims to reduce reliance on the user’s ability to manually verify every signature request. The product’s stated focus includes both off-chain phishing surfaces and on-chain transaction risks.
- Scam site and phishing detection intended to prevent users from interacting with malicious domains.
- Transaction preview and “translation” style explanations aimed at clarifying what a signature will do before approval.
- Address poisoning warnings and related protections against common on-chain social engineering tactics.
- Social impersonation detection, including alerts intended to flag fraudulent accounts and links.
- Optional transaction coverage programs, described by the company as offering protection up to a fixed limit under certain conditions.
Technology and Features
Kerberus positions Sentinel3 as a real-time decision layer in the user’s workflow, sitting between the browser, the wallet, and the transaction execution path. In public descriptions, the system combines URL and page-risk detection with transaction-level analysis, aiming to highlight abnormal approvals, token allowances, and signature requests that are common in wallet drainer campaigns. CryptoSlate has reported on the mechanics of drainers and phishing-driven theft in coverage such as crypto phishing scams, where user authorization is often the decisive failure point.
Kerberus has also described MEV-oriented protections through private transaction routing concepts, reflecting an overlap between user safety and transaction ordering dynamics. For broader context on MEV as a market structure topic, see CryptoSlate’s coverage including Paradigm’s comments on MEV regulation.
Use Cases and Market Position
Katz has framed Kerberus as a consumer security layer for everyday wallet activity, including DeFi interactions, NFT marketplaces, token launches, and cross-chain usage where phishing surfaces are common. The company has highlighted support across many chains, including Ethereum Virtual Machine networks and Solana, where high throughput and fast confirmation can amplify the impact of hurried approvals. CryptoSlate maintains background pages for major networks frequently discussed in this context, including Ethereum (ETH) and Solana (SOL).
In addition to individual users, a product like Sentinel3 can be relevant to teams that onboard new community members, run token distribution programs, or operate customer support channels, because scams often target users at the edges of official communications.
Funding and Team
Kerberus has publicly described a leadership pairing between Katz and co-founder Danor Cohen, who is presented as CTO and responsible for core security engineering. Kerberus’ documentation describes Cohen as a long-time offensive security practitioner with experience in major technology environments. This division of roles, growth and operations on one side and security engineering on the other, aligns with how many consumer security products in crypto attempt to balance usability and technical rigor.
Notable Milestones
- 2022: Kerberus founded, with Katz as CEO and co-founder.
- 2023 to 2025: Kerberus has stated that Sentinel3 users experienced “zero losses” under its protection model, as described in company materials.
- 2024: Kerberus reported acquiring a product named Fire, described as an earlier consolidation step in consumer security tooling.
- 2025: Kerberus announced the acquisition of Pocket Universe, positioning the deal as a way to expand distribution and unify consumer security experiences.
Risks and Considerations
User-protection tooling in crypto faces structural limitations. Attackers iterate quickly, phishing kits evolve, and malicious contracts can be engineered to mimic legitimate behavior. As a result, any real-time detection product must manage false positives, avoid training users to ignore warnings, and maintain clear accountability boundaries about what is and is not covered. There are also privacy and trust considerations, since browser extensions may observe navigation patterns and transaction metadata to provide protections.
For Katz and Kerberus, the central challenge is sustaining accuracy and coverage as Web3 usage expands across chains, wallets, and signing flows. The success of this category depends on whether consumer security layers can become standard practice without creating friction that drives users to disable protections during high-stakes moments.
