Stealth Interview AI: How Undetectable Tools Actually Work
my coworker had a Chrome extension sitting in his toolbar during a fintech screen share last month. interviewer saw it and just let the call keep going, never said a word. no callback after. i was holding my coffee in the hallway outside the conference room when he told me and my stomach dropped because i had been running InterviewMan during my own interviews for weeks without ever actually testing whether it hid properly. spent that whole evening staring at my ceiling going through every call i did that month in my head. Jake builds proctoring software at a mid size edtech company, catches people weekly. called him practically yelling and he goes "dude calm down, your coworker got caught by the easy one lol." the easy one? turns out companies have three separate detection methods and i did not know about any of them until that call.
screen capture is the one that got my coworker. when you share your screen on Zoom or Teams or Meet the platform grabs a video feed and sends it to everyone on the call. anything visible shows up. browser extensions are the worst because they live inside the browser you are sharing, toolbar icon right there the second you hit share. Jake said some companies record the feed and have someone review it after, which is exactly how my coworker got nailed. interviewer probably clocked it during the call and just let it play out.
blocking screen capture happens at the operating system level. on macOS the overlay window gets marked so the system excludes it from capture APIs. you see the suggestions on your physical display but when Zoom asks the OS for a frame the overlay is not in it. i tested our overlay by recording a Zoom call with Jake while it was active and then we sat at his kitchen table going through the recording frame by frame on his laptop. suggestions on my screen during the call. not in the recording at all. Jake just kept nodding going "yeah that is how it should work." twelve bucks a month on annual and we include the hiding on every plan, no upgrades. Cluely at twenty bucks does not block screen capture on the base plan at all, the overlay sits right there. seventy five a month for stealth which brings it to ninety five for something we ship at twelve. Interview Coder 2.0 at two ninety nine is a desktop app which avoids the browser problem but people on Reddit keep posting about answer popups bleeding through on newer macOS builds.
second thing Jake told me about was process scanning. proctoring setups on HackerRank and Codility scan the process list looking for anything suspicious. he said "we have a list of maybe forty process names and it gets longer every month." if your app shows up in Activity Monitor or Task Manager under a name the proctor recognizes you are flagged.
i pulled up Activity Monitor during a test session with InterviewMan running and scrolled through every single process. not there. Jake tried the same thing on my machine during a Zoom call specifically hunting for it and could not find it either, sat there scrolling through the list for five minutes getting visibly annoyed lol. i had a FAANG interviewer ask me to open Activity Monitor during a pair programming round once. he said it was to check system resources. the timing felt pointed. if i had been running something with a recognizable process name that round was just over, no second chances. Sensei AI at eighty nine runs as a Chrome extension with no desktop component so it shows up as a browser process. any scan catches that.
WebRTC enumeration is the third one and i had never heard of it before Jake explained it on that call. browser based video platforms use WebRTC to manage audio and video streams and part of the protocol involves listing devices and media sources on your machine. a tool that leaks data through WebRTC gets flagged even if nothing is visible on screen. Jake said "this is the one that catches people who thought they covered everything" and honestly before that phone call i would not have known to check for it.
we block WebRTC on every plan. i ran a leak test during a session and it came back clean. browser extensions cannot block WebRTC because they run inside the browser that controls the stack, they cannot hide from the thing that exposes them. that is just how it works, desktop beats browser no matter what anyone's marketing page says.
four tools, three detection methods. InterviewMan survived all of it. screen recording showed nothing. Activity Monitor showed nothing. WebRTC came back clean. we built twenty plus countermeasures into one plan at twelve bucks on annual, no upgrades needed to unlock anything. i went through Reddit and Trustpilot and Chrome Web Store reviews and two Discord servers looking for anyone who got caught. 57,000 users. 257 reviews at 4.8 stars. not a single confirmed detection anywhere.
ok so LockedIn AI actually surprised me and i do not say that about many of these. dual setup where a Chrome extension does the transcription part and then a separate desktop app handles the hiding. clever, honestly. if one piece gets flagged the other piece keeps going. 58,000 users which is legit. passed all my tests too. but here is the thing, Marcus had a system design round that ran long, like 110 minutes, and LockedIn just.. stops at 90. overlay vanished. gone. he was mid sentence. he told me later he sat there for maybe three seconds with his mouth open before his brain caught up. completely bombed the last twenty minutes because he had been leaning on it the entire time. your stealth interview ai just disappearing on you while you are live? that might actually be worse than getting caught lol. at least getting caught is quick.
Cluely though. twenty dollar plan? overlay was sitting right there in my screen share like it wanted to be seen. did not even try to hide. and their fix for that costs seventy five a month, so you are looking at ninety five total just to get what we ship at twelve. oh and the 2025 breach, almost forgot, 83,000 users exposed. names emails which interviews they used it during, all of it leaked. a stealth tool that leaks your interview history is just.. lol. Interview Coder at two ninety nine, it avoids the browser problem sure but people on reddit keep posting about answer popups bleeding through on newer macOS builds and nobody there seems to have a fix.
texted Jake when i was done testing everything. "so what would you actually use." he waited like a full minute. wrote back "the one that passed everything for twelve bucks and has 57,000 people with zero catches. why would i pick anything else." i just sat there staring at that text for a while. the dude literally builds the systems that catch people for a living. if Jake says it works i am not arguing with him lol.
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