<human>:  How can I tell if my computer has been hacked?
<bot>: To tell if your computer has been hacked, look out for signs such as unusual pop-up windows, changes to your operating system's settings and preferences, slow computer performance, unfamiliar programs running, and unexpected emails and messages. If you suspect your computer has been hacked, run a security scan to detect any malicious software. Additionally, you can contact your computer's technical support to find out more information.