You can't be certain that these app stores check their apps thoroughly for malware, so for security reasons it should be disabled. The most common reason to enable this option is to install apps from alternative Android app stores.
Google perform their own scans to ensure that the Play Store is kept free of malware. About File Quarantine and Known Malware Detection in OS XĪnti-virus software is not required for Linux devices as these are far less prone to malware than Windows devices.
OS X will actively try to prevent you from opening files that could potentially harm your Mac and so third party anti-virus software is not required: This automatically scans new files, running processes and memory for infections. Your anti-virus software must have on-access scanning (sometimes referred to as "real time" protection) switched on. Students can use Windows Defender for free: If you're using Windows 7, we strongly advise that you upgrade to Windows 10. Make sure that you have up to date anti-virus software installed on your Windows devices. Most anti-virus applications have this switched on by default.