By design, spyware and stalkerware are hard to detect and can be just as hard to remove. It is not impossible in most cases, but it may take some drastic steps on your part. Sometimes the only option may be to abandon your device. When removed, especially in the case of stalkerware, some operators will receive an alert warning them that the victim's device has been cleaned up. Should the flow of your information suddenly stop, this is another clear sign that the malicious software has been removed. Do not tamper with your device if you feel your physical safety may be in danger. Instead, reach out to the police and supporting agencies.Now, here are some removal options:Run a malware scan: There are mobile antivirus solutions available that can detect and remove spyware. This is the easiest solution available, but it may not be effective in every case. Cybersecurity vendors, including Malwarebytes, Avast, and Bitdefender, all offer mobile spyware-scanning tools. Change your passwords: If you suspect account compromise, change the passwords of every important account you have. Many of us have one or two central 'hub' accounts, such as an email address linked to all of our other services. Remove access to any 'hub' services you use from a compromised device.Enable two-factor authentication (2FA): When account activity and logins require further consent from a mobile device, this can also help protect individual accounts. (However, spyware may intercept the codes sent during 2FA protocols.)Consider creating a new email address: Known only to you, the new email becomes tethered to your main accounts.Update your OS: It may seem obvious, but when an operating system releases a new version, which often comes with security patches and upgrades, this can -- if you're lucky -- cause conflict and problems with spyware. Keep this updated.Protect your device physically: A PIN code, pattern, or enabling biometrics can protect your mobile device from future tampering. If all else fails, factory reset... or junk it: Performing a factory reset and clean install on the device you believe is compromised may help eradicate some forms of spyware and stalkerware. However, make sure you remember to back up important content first. On Android platforms, this is usually found under Settings > General Management > Reset > Factory Data Reset. On iOS, go to Settings > General > Reset. Unfortunately, some stalkerware services may survive factory resets. So, failing all of that, consider restoring to factory levels and then throwing your device away.An open source project developed by Amnesty International, MVT (Mobile Verification Toolkit) is a cyber forensics package able to scan for advanced spyware on mobile devices. However, this is most suited to investigators.