How to simply judge whether a website is safe? Learn about http and https, and how to check whether a website is secure

When browsing the Web, an icon will be displayed in the address bar to indicate the security of the connection to the website you want to visit. This icon can help you determine whether it is safe to send and receive information from the website. The connection will tell whether the information (such as password, address or credit card) sent to and from the site is safe and cannot be intercepted by an attacker. This connection does not inform the site of its reputation. However, if the address is a known phishing or malware website, Microsoft Defender SmartScreen will determine and indicate the address.

The connection icon in the address bar has four different states. The following information explains the meaning of each state and provides tips on how to make intelligent decisions for browsing:

Connection security (valid certificate)

The website you are visiting has a valid certificate issued by a trusted authority. The information sent to and from the site is secure and cannot be intercepted by an attacker. However, even if a website with a valid certificate may have poor reputation, always check the URL in the address bar to make sure it is on the target website before entering any information.

Not completely secure (certificate certificate)

This website does not have a valid certificate. Messages sent to and sent to unsafe , may be intercepted by the attacker or seen by others. Personal data is at risk when sending or receiving information from this site. If possible, please contact the website owner and request that his website use a secure connection to protect his data.

Expired security configuration (invalid, expired, self signed)

The certificate for this website is invalid or there is a serious error in website security. Messages sent to and sent to unsafe , may be intercepted by the attacker or seen by others. Microsoft Edge recommends that you do not enter personal information on this website, or avoid using it entirely.

Suspicious or dangerous websites (phishing or malware)

This website has been tagged by Microsoft Defender SmartScreen. Microsoft Edge recommends that you avoid using. Using this website will threaten your privacy and security. The website has been tagged because it may try to trick you into installing dangerous content or displaying personal information (such as passwords or credit cards). Learn more about Microsoft Defender SmartScreen.