Undetectable Interview AI: How Stealth Mode Works in 2025

Undetectable interview AI refers to artificial intelligence tools designed to assist candidates during live interviews without being visible to interviewers, screen-recording software, or proctoring systems. The key distinction lies in the delivery mechanism: browser extensions inject detectable code into web pages, while a native desktop overlay operates at the operating system level, entirely outside the browser's document object model and screen capture APIs. AissenceAI's stealth mode uses a native application overlay that is automatically excluded from screen shares on both Windows and macOS, meaning the interviewer sees only your face and the video call interface — never the AI suggestions. This guide explains the technical differences between detectable and undetectable approaches and why architecture matters.

Why Browser Extensions Are Detectable

Browser extensions work by injecting JavaScript and HTML elements into web pages. Video conferencing platforms like Zoom Web, Google Meet, and Microsoft Teams can query the browser's DOM to discover injected elements. Proctoring software such as HonorLock, ExamSoft, and ProctorU specifically scan for browser extensions by checking the chrome.runtime API, examining installed extension IDs, and monitoring for DOM mutations that indicate injected content.

• DOM injection detection — Proctoring tools scan for unfamiliar HTML nodes
• Extension enumeration — Some platforms list installed Chrome extensions
• Network monitoring — Extension API calls to external servers create detectable traffic patterns
• Content script signatures — Known extension code patterns are fingerprinted

How Native Desktop Overlay Stealth Works

AissenceAI's native desktop application creates an overlay window using operating system APIs — WinUI on Windows and AppKit on macOS. This window is configured with specific flags that exclude it from screen capture:

• Windows — Uses WS_EX_TOOLWINDOW and SetWindowDisplayAffinity to exclude the overlay from screen capture and recording APIs
• macOS — Uses NSWindow.SharingType.none to prevent the window from appearing in screen shares

Because the overlay exists entirely outside the browser, no web-based proctoring tool can detect it. There are no browser extensions to enumerate, no DOM mutations to observe, and no content scripts to fingerprint.

Screen Recording Exclusion

When an interviewer records a Zoom or Teams meeting, the recording captures the shared screen content. AissenceAI's overlay is explicitly excluded from these capture APIs, so recordings show only the standard meeting interface. This is not a hack or workaround — it uses documented operating system APIs designed for exactly this purpose, the same APIs used by password managers and DRM-protected video players to keep sensitive content off screen recordings.

Testing Your Stealth Setup

Before your interview, verify stealth mode is working by starting a screen share in your chosen platform and confirming the overlay is invisible. AissenceAI includes a built-in stealth test that validates the overlay is excluded from all capture methods on your system.

For safety details, read the comprehensive safety guide. To understand how this compares to browser-based tools, see desktop native vs browser extension. Start with the complete copilot guide or visit the comparison page to see how AissenceAI's stealth mode compares to competitors.