We come to the last Blog for our course. In
the last few lectures, two SNA examples are introduced: PageRank and HITS.
PageRank is used by Google Internet search engine to assigns a numerical
weighting to each element of a hyperlinked set of documents. This help to measure the
importance of a particular page.
A new idea – Semantic Web is also
introduced. Semantic Web promotes common formats for data on the World Wide
Web. The Semantic Web aims at converting the current web of unstructured
documents into a "web of data
In final lecture, it talks about Online
Social Networks and its Security and Privacy Issues. There are three main security
objectives in Online Social Networks. They are
- Privacy - protection of personal information, message in social network
- Integrity - the protection of data from being altered by unauthorized parties
- Availability - availability of user profiles is consequently required as a basic feature, even though considering recreational use
Beside these three aspects, I think Authentication
is another important issue in Security Issues of Online Social Networks. In Online
Social Networks, we often receive comment or request outside our social network.
For example, we receive a friend request in Facebook and he is a friend of my
friend, but I didn’t meet him before. How can I authenticate him? Can I trust
his profile?
Let’s consider below situation. I have a friend
called Peter. One day, a person called Peter sent me a friend request in
Facebook and his profile picture is Peter’s photo. I may accept his request
immediately with out further authentication. I think most of the people do the
same way liked me. However, this can be very dangerous. I didn’t authenticate
his identity and this may expose my personal information to him.
As Online Social Networks become more and
more important in our life, we are putting more and more information into the
social network. Our personal information becomes easier to be exposed into the
social network. Security and Privacy Issues become a very important issues in
Social network because the social network is growing too fast.
Yes, i think so. The social network is pulling the demand for new privacy and security measures. But equally important i think the education is important too, just like how difficult it's to educating user about the difference between http and https in OSI layers. How can we educate users in the social network to be aware of the dangers around would also be a challenging task.
ReplyDeleteI agree that the security on social networking is getting more important as user personal information becomes easier to be exposed into the social network. I think technology education should be conducted to the public more frequently so that user can participate social network more securely.
ReplyDeleteI agree with you that authentication is required in the social network. I have a friend photos was used in another unknown users.
ReplyDeleteI think that in one day, user authentication with Digital Signature can be implemented in the social networking.
oh yeah.... it is very danger to accept any friend from facebook you don't know. Nowadays, we put lots of personal information in facebook already. Unless you don't care about it, maintenance a good friend-list helps protecting your privacy.
ReplyDeleteSecurity is getting more important in social networking website. Say for facebook, although there is an option to use https for facebook, Mark Zuckerberg's facebook album is still able to be accessed by hacker.
ReplyDeleteIt is hard to find a way to identify my friend Facebook account is real or not, unless you have his number. However, for the old classmate of primary school, you may not to double check the identity, you may need to trust him.
ReplyDeleteI cannot agree with you more. The security in social network becomes more and more important. It is not only our privacy but also the safety of a country. In some news, we can see some people the confidential document into the social network, which is directly affect the safety of a country.
ReplyDeleteSome of the police play "facebook" when they are on duty.They share their life and our safety.
Your experience is precisely express that human behavior will cause their self in exposed themselves in public. Therefore social security may not focus on techniques only. Anonymous may invite you as a friend and ask you to click on danger website or ask you to transfer money to his/her back A/C.
ReplyDeleteI agree with you. More and more people relay on social network. We have to keep an eye on our private information. Privacy would be the biggest security issue of SN.
ReplyDelete