Deepnet Security One-Time Password (OTP) is an authentication solution that generates dynamic, single-use passwords for securing login sessions and transactions. Unlike static passwords, OTPs are valid for only one session or transaction, making them resistant to replay attacks. If an OTP is intercepted after use, it cannot be reused by an attacker. OTPs are generated by security token devices, which Deepnet Security categorizes into two types: **Hardware OTP Tokens (SafeID)** - Dedicated physical devices for generating one-time passwords - Available in form factors including key fob, display card, grid card, and USB key - Isolated and tamper-proof hardware design - Lower ongoing support costs compared to software tokens **Software OTP Apps (MobileID)** - Software application typically running on smartphones - Generally available at no upfront cost - Requires ongoing support considerations such as accidental deletion, device loss, or damage The solution supports OATH-compliant tokens and is positioned as a component within Deepnet Security's broader multi-factor authentication (MFA) ecosystem, which also covers VPN, remote desktop, cloud services, Windows/macOS/Linux login, and Microsoft Office 365 environments.