No Comment on BT AV software...but i think most will agree that AVast or AVG both free with Zonealarm also free works very well.
Also, these use no where near the resources norton uses,therefore better and quicker performance from your system.
OnePlus 5 review
Alice Saey's mesmerising animation for Dutch singer Mark Lotterman
iPad Pro 10.5in (2017) review
Comment booster votre iPhone ?