You can keep your data secure and avoid most online scams by following these Black Friday online safety tips: Only shop on secure websites. Look for the https:// in the URL and make sure the site has a valid security certificate. Don't click on any links in emails or social media postings claiming to be Black Friday deals. These are often scams. Use a credit card for your online purchases. Credit cards offer better protection against fraud than debit cards. Keep a close eye on your credit card and bank statements. Look out for any unauthorized charges. Use a VPN to encrypt your data when shopping online.