Short answer: no. Slack doesn't track mouse movements. It's not spyware, it doesn't watch your cursor, it can't see what you're doing in other apps.
But it's not completely in the dark either. Here's what Slack actually monitors — and what it can't see.
What Slack Can See
Your presence status Slack watches for interaction with the app itself. Clicking around, reading messages, typing replies — that counts as interaction with the app. Go nine minutes without touching it and your status goes grey.
When you read messages DMs show read receipts. If someone sends you a direct message, they can see when you opened it. In channels, Slack tracks what you've seen for "mark as read" purposes, but that's not visible to other members the same way.
Your message timestamps Every message is timestamped. Anyone in the channel can see when you last posted.
General activity data (admin views) Workspace admins on paid plans can pull usage reports. Think: messages sent per day, active days, days logged in. It's not live surveillance. But it does paint a picture of engagement over time.
What Slack Cannot See
Your mouse movements Slack has no access to cursor position data. It doesn't know where your mouse is, how fast it's moving, or whether you've got a mouse jiggler running.
What apps you have open Slack runs in its own sandbox. It can't see what else is on your machine, what tabs are open in your browser, or what files you're working on.
What you type outside Slack No keylogging. Slack only processes keyboard input within its own interface.
Your screen Slack can't take screenshots or see what's on your display. The only exception is when you explicitly share your screen on a call.
How long you spend reading messages It knows whether a message was opened. Not how long you sat there reading it.
The Admin View: What Employers Can See
On Business+ or Enterprise Grid, workspace admins get more through the Analytics dashboard:
- Total messages sent by each member
- Active days (any day with at least one message or reaction)
- Days the member accessed Slack
What it doesn't cover: message content in private channels or DMs (unless a legal hold or compliance export has been properly configured), real-time cursor location, or screenshots.
Some organisations also wire up third-party HR tools that pull this data into their own dashboards. What's visible depends entirely on what your employer has set up.
What About Slack's Activity Reports?
Some organisations run regular activity reports to see who's engaging. These look at messages sent, reactions added, channels visited — actual interaction signals.
This is the bit that catches people out. Moving your mouse near Slack doesn't show up in these reports. Actual clicks and interactions do.
So if your activity needs to show up in workspace analytics — not just a green dot — mouse movement won't get you there. Clicks inside the app will.
Does Slack Share Data With Your Employer?
Yes, in the sense that workspace data belongs to the workspace owner. If your employer's paying for the account, admins can access message history in public channels, and in some configurations DMs too, depending on the plan and data retention settings.
Slack's privacy documentation spells this out. The short version: anything you type in a company-owned Slack workspace should be treated as potentially visible to your employer.
Wrapping Up
Slack doesn't track mouse movements, can't see other apps, and doesn't log keystrokes outside its interface. What it does track: in-app activity, message read status, and general engagement data that admins can view. To look active in both the green dot sense and the admin-report sense, you need genuine clicks inside the app. Mouse movement won't cut it.
Green Dotter handles exactly that — clicking inside defined areas of your Slack window on a natural, randomised schedule.