How to Tell If Spyware or Stalkerware Is on Your Device

Spyware and stalkerware are malicious software designed to secretly monitor your digital activity. Knowing how to spot the signs of these hidden threats is the first step towards regaining your privacy and securing your device.

Watch for Performance Changes

One of the most common signs of spyware or stalkerware is a noticeable change in your device's performance. Because this software runs in the background, it can consume a lot of your device's resources, leading to slowdowns.

• Your phone or computer is running much slower than usual.
• The battery drains more quickly than it used to, even with light use.
• Your device randomly restarts or shuts down without you doing anything.
• Apps take a long time to open or crash unexpectedly.

Unexpected Data Usage

Spyware and stalkerware often send your information over the internet to whoever is monitoring you. This activity can result in a significant increase in your data usage, even if you haven't changed your online habits.

• Check your monthly data bill for unexplained spikes in data consumption.
• On Android, go to Settings > Network & Internet > Mobile network > App data usage to see which apps are using data.
• On iOS, go to Settings > Mobile Data and scroll down to see data usage by app.

Strange Online Activity

Keep an eye out for anything unusual happening when you're using your device to browse the internet or use apps. Spyware can sometimes interfere with normal online functions.

• New toolbars, homepages, or search engines appear in your web browser that you didn't install.
• You're seeing a lot more pop-up ads than usual.
• Your device is sending out emails or messages that you didn't write.
• You notice your device connecting to unknown Wi-Fi networks automatically.

Unfamiliar Apps or Settings

Sometimes, spyware or stalkerware might be disguised as a legitimate app or hide within your device's system. It's a good idea to regularly review the apps installed on your device and check for any unfamiliar settings.

• Go through your list of installed apps and uninstall any you don't recognise or remember downloading.
• Check your app permissions to see if any unknown apps have access to your microphone, camera, or location.
• On Android, look in Settings > Apps & notifications > See all apps. On iOS, review your Home Screen pages for unfamiliar icons.

Look for Physical Tampering

In some cases, especially with stalkerware, the person installing it may need physical access to your device. Look for any signs that your device has been accessed without your knowledge.

• Your device has been unlocked or used while you were away, even for a short time.
• New, unfamiliar files or apps suddenly appear on your device.
• Someone has tampered with your device's security settings, like changing your password or PIN.

Key takeaway

Identifying the presence of spyware or stalkerware is a critical first step. By carefully observing your device's behaviour and checking for these common signs, you can start to piece together what's happening. Remember, don't panic, but do take these observations seriously as they will guide your next actions to secure your privacy and device.