Answer :
In the above case
- The bank might use two or more domain names on its site, and Bob used a URL that doesn't match the name in the certificate.
- A hacker may have set up a site whose domain name masquerades as the bank; the certificate contains the name of a different site the hacker owns.
Hence, both of these apply.
One of SSL's primary functions is to encrypt data, which shields you from hackers and data skimmers. Data that has been encrypted can only be decrypted by an authorized person, such as a server or browser. Credit card transactions, IDs, passwords, etc. mostly use this.
An SSL certificate is required for a website in order to protect user information, confirm the site's ownership, stop hackers from building a fake version of the site, and win over users. SSL/TLS encryption is made possible by the pairing of public and private keys that SSL certificates make possible.
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