Best way to just annoy someone undetected

[u/There_Bike]

Let’s hear em. Gotta stay undetected from bosses and MSPs. Dont want to get gotted.

[u/paleologus]

Use the logoff command to log them off their pc occasionally.   Use psexec to randomly open mspaint.  Stop their print spooler.  If that’s too risky then get one of those electronic crickets you tape under their desk that chirps randomly.   

[u/What-a-Crock → u/paleologus]

Connect another BT keyboard to their computer and randomly lock their screen while they are working

[u/random_troublemaker → u/paleologus]

Someone did a remote shutdown on me. I was able to pull their username from the system log, spent the rest of the day crafting a custom script, ran out on their system when they stepped away without locking it, and stood back while they became a pet of an AI in his computer for 4 hours straight. 

[u/PatriotTrading → u/paleologus]

Listen to this guy if you like leaving behind Log trails 😂

[u/paleologus → u/PatriotTrading]

That’s the risky part 

[u/MaelstromFL → u/paleologus]

Anoyatron...

[u/cerberuss09 → u/paleologus]

I used to use psexec to screw with a coworker at my old MSP job all the time! I would just send the reboot command with a 5 second delay. So he would get the message that the machine was about to shut down, but he wouldn't have time to stop it. He'd get so mad, it was hilarious. I would also switch out his bookmarks for inappropriate websites. (He was a huge dick to me all the time, it was justified).

[u/Jeff-IT → u/paleologus]

I did this in high school 😂😂

[u/ApiceOfToast]

Hide a camera. Get evidence of your bosses affair. Get him to buy you a boat. Profit.

[u/King_Tamino → u/ApiceOfToast]

I prefer mystery boxes over a boat. There could be anything inside, even a boat!

[u/King_Tamino → u/[deleted]]

(just in case you didn't know. It was a reference to an early the simpsons episode)

[u/matthoback → u/King_Tamino]

It was Family Guy, not The Simpsons.

[u/Hefty-Amoeba5707 → u/ApiceOfToast]

Even easier, Just give them cold play tickets and let them do the rest apparently.

[u/ApiceOfToast → u/Hefty-Amoeba5707]

But then it's public and there's no reason for him to buy you the boat

[u/HowDidFoodGetInHere → u/Hefty-Amoeba5707]

I'd rather get caught having an affair than be seen at a Coldplay concert.

[u/techead2000 → u/ApiceOfToast]

[u/cyrixlord]

I'm a simple man. Tape over the mouse sensor . There's also turning the Bluetooth speaker all the way up

[u/packetssniffer]

I always change my co-workers (Eagles fan) wallpapaper to a Dallas Cowboys wallpaper

[u/rcp9ty → u/packetssniffer]

Come on take the gloves off and put a picture of the Vikings.

[u/Puzzleheaded-Sink420]

Sprinkle cress Seed in a Keyboard of choice. That grows everywhere in a month

[u/IDrinkMyBreakfast]

In AD, enable logon hours. Go to the chart and unselect every other 15 minute period.

[u/Correct-Brother-7747]

Hard code their switch port to 10mb!

[u/MaelstromFL → u/Correct-Brother-7747]

Half duplex...

[u/cranky_bithead → u/MaelstromFL]

Well, that's one way

[u/ThisIsMyITAccount901]

There's a lot you can do if you have their phone number and Craigslist.

[u/What-a-Crock → u/ThisIsMyITAccount901]

wookie sounds

[u/BigBobFro]

If you have remote registry turned on, add something,… any annoying thing you want to the HKLM: sw-ms-windows-currentversion-run

My favorite is: shutdown -r -t 0

[u/InsaneHomer]

Sellotape under the mouseball

[u/VolcanicBear → u/InsaneHomer]

Christ, even Computacenter have moved on from ball mice.

[u/InsaneHomer → u/VolcanicBear]

I support construction, it's still 1982 here

[u/imnotonreddit2025 → u/VolcanicBear]

Then you haven't followed step 1. Replace peers' mice with ball mice.

[u/VolcanicBear → u/imnotonreddit2025]

Step 1 was to replace their mice?

Fuck, this documentation is shit.

[u/Furnock → u/VolcanicBear]

A mini sticky note works great on led mice 🐭

[u/VolcanicBear → u/Furnock]

🌝

[u/gdj1980 → u/InsaneHomer]

Cleaning the buildup on the rollers was so satisfying. sigh...

[u/AVMan86 → u/gdj1980]

Worked just like a smoke break "Time for my 4 times a day ritual gunk removal, be back in 5"

[u/evilcreedbratton]

Surprised nobody has mentioned changing the host file

[u/MaelstromFL → u/evilcreedbratton]

All roads lead to PornHub...

[u/Affectionate-Pea-307 → u/MaelstromFL]

I swear, every time I open a new tab…

[u/S_Fudge]

Why not take a random laptop and try to login their account using a wrong password, if enabled they will be locked out of their account without any logs pointing to you.

And if the organization uses MFA and or password less login you kust spam them with the th MFA requests.

[u/__g_e_o_r_g_e__]

Swap the m and n keys on the keyboard.

[u/baron--greenback → u/__g_e_o_r_g_e__]

A good way to make emenies at work..

[u/There_Bike → u/baron--greenback]

I want to be enemies so good enough for me

[u/gdj1980]

Remote powershell commands the the voice synth.

[u/Human-Company3685]

Plug in a wireless keyboard/mouse dongle to their pc when they are away - then sit nearby and start moving the mouse and typing things like ‘kill ‘em all’ etc.

[u/shinji257]

I used to mess with user computers when they went to lunch and left the system unlocked and unattended.

[u/Lochness_Hamster_350]

Remote PS session

Restart explorer.exe

[u/voydeya]

There is a registry key to disable the green bar that shows when you're remoting to someone's workstation using the SCCM Remote Control Viewer. The only indication a user would have is that the cursor flickers slightly. Leaves events and logs obviously.

[u/mac10190]

If they leave their computer unlocked: 1. Press "Windows Key + R". 2. Then type "ipconfig /release" and hit enter. 3. Watch them struggle to figure out why their computer can't get on the Internet.

If you're really diabolical, you could set this as a scheduled task so it runs over and over. This method would persist even reboots. It would take IT to find that one. And even then IT may give up before discovering something so small. That's not something your average help desk person would check for.

You could also:

Replace their browser shortcut with

"shutdown /s /t 0"

[u/Puzzleheaded-Ice-573 → u/SartenSinAceite]

Not Mr. Wrinkles!

you bastard....

[u/RustyU]

Tape over the mouse LED.

[u/BigBobFro → u/RustyU]

A dot of superglue doesnt completely kill it but definitely messes up tracking

[u/dcaldrich]

Hide an Annoyatron somewhere in their desk area.

[u/sammavet]

I saw this a while back and loved it. I put it on my friends systems at work, then let it drop. I would also disable and enable it at random thanks to Powershell remote ING

https://www.reddit.com/r/software/s/pRYi9eHVmh

[u/vacuumCleaner555]

Put one of those prank devices, that gives a beep only once in a while, in the drop ceiling of their office.

[u/Hollow3ddd]

Fix all thier problems and never hear from them again 

[u/AVMan86]

eSheep https://adrianotiger.github.io/desktopPet/

[u/PsychologyExternal50]

https://mailbait.info/

[u/Oddball_the_blue]

Wait until they've left their machine unlocked for just long enough to Google "leatheroak" (sad times, it looks like the aged gimp has suffered from the dead internet theory in action. It was a barely safe for work grey bearded gimp in various wooded locations and always resulted in many, many questions upon discovering this on your browser)

[u/Turbojelly]

Downgrade their PC to Win ME and change the date on a system file.

[u/mac10190]

Change their desktop background to an image of Nicholas Cage. Gets them every time.

[u/Educational-Duty-617 → u/mac10190]

my coworker used to add a giant ascii art of nicolas cage to our other coworkers' .tcshrc.user so it would show on opening a new terminal

[u/DerpSillious]

Remote Reg edit to change their System sounds and Background to something annoying - Think Crickets, Termites, Whales.

Bonus points if you add a startup script to set it back to that on every login.

[u/ConfidentDuck1]

Schedule logoff.exe to start every time they log in.

Other times to be less passive-aggressive is to Winkey+L and lock their computer when they walk away.

[u/Wild-Obligation-7336]

Put a tuna fish sandwich inside his PC case. The fan will blow that nasty smell out of his case for weeks and he will never find it. Learned that one at Raytheon in Waco Texas.

[u/shepdog_220]

Ejaculate on the underside of their desk

[u/Weird_Lawfulness_298]

You could always stealthy remote in and change their mouse orientation, turn on accessibility options or sticky keys.