Can a web sever obtain SSL server certificates from two or m

Can a web sever obtain SSL server certificates from two or more certification authorities? Justify your answer.

Describe a method for protecting users against URL obfuscation attacks.

Ad servers are increasingly being used to display essential content for web sites (e.g., photos that are part of news items). Suppose that the same host is used to serve images for two different web sites. Explain why this is a threat to user privacy. Is this threat eliminated if the browser is configured to reject third-party cookies?

Explain the strengths and weaknesses of using symmetric encryption, like AES, versus a public-key cryptosystem, like RSA.

What are the components of a total order and which one is missing in the definition of a partial order?

Solution

1. SSL Certificates are small data cases that digitally attach a cryptographic key to an organization’s particulars. When installed on a web server, it stimulates the padlock and the https protocol and let’s secure connections from a web server to a browser. Naturally, SSL is utilized to secure credit card transactions, data transfer and logins, and in additional recently is becoming the norm when securing browsing of social media sites.

Yes, a web server can obtain SSL server certificates from more certification authorities. SSL server certificate provides a means of verifying identity of web site to its clients.

2. Anti Phish that aims to protect adjacent to spoofed web site based phishing attacks, phishing identification and explain various method to detect them. To make sure support for local languages in Internet software because web browsers and email clients, most software will sustain alternate encoding systems for data. It is a trivial exercise for a Phishes to obfuscate the true nature of a supplied URL using one of these encoding schemes

3. When a single ad server is utilized to serve two divide websites at the same time, it threatens the solitude of the website users in the sense that if a client visits a website which is composed of many objects from dissimilar servers will generate several HTTP demands directed to the servers each of which is forbidden by dissimilar domain of administration. A cookie is normally associated with each of these needs. Since cookies are used to maintain a session with the server, a cookie is send back unchanged by the browser every time that particular website is accessed. Other websites may therefore be utilized to track the users as they make the frequent visits.

An ad server can use third party cookies to tack a user slantwise multiple sites where the advertisements have been placed. Apart from tracking users, third party cookies can be used to trace identities and even get personal information from social networks. The information may also be gathered using java scripts as they can access cached information in browsers like history of visited links. Rejecting third party cookies will so limit such threats

4.

Advantages:

1. Extremely secure

2. Relatively fast

Disadvantages:

1. Sharing the key

2. More damage if compromised