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Current Topic: Technology

securityfocus - Netizens eye Web-enabled surveillance cams
Topic: Technology 10:44 am EST, Jan 14, 2005

Blogs and message forums buzzed this week with the discovery that a pair of simple Google searches permits access to well over 1,000 unprotected surveillance cameras around the world -- apparently without their owners' knowledge.

securityfocus - Netizens eye Web-enabled surveillance cams

Slashdot - Hacker penetrates T-Mobile systems
Topic: Technology 12:10 pm EST, Jan 12, 2005

A sophisticated computer hacker had access to servers at wireless giant T-Mobile for at least a year, which he used to monitor U.S. Secret Service e-mail, obtain customers' passwords and Social Security numbers, and download candid photos taken by Sidekick users, including Hollywood celebrities, SecurityFocus has learned.

Slashdot - Hacker penetrates T-Mobile systems

IEEE: Amazon's Collaberative Filtering, Cluster Models
Topic: Technology 3:48 pm EST, Jan 11, 2005

Traditional Collaborative Filtering
A traditional collaborative filtering algorithm represents a customer as an N-dimensional vector of items, where N is the number of distinct catalog items. The components of the vector are positive for purchased or positively rated items and negative for negatively rated items. To compensate for best-selling items, the algorithm typically multiplies the vector components by the inverse frequency (the inverse of the number of customers who have purchased or rated the item), making less well-known items much more relevant.3 For almost all customers, this vector is extremely sparse.

The algorithm generates recommendations based on a few customers who are most similar to the user. It can measure the similarity of two customers, A and B, in various ways; a common method is to measure the cosine of the angle between the two vectors:

Overview of Collaberative filters, cluster models, and other recommendation algorithms.

IEEE: Amazon's Collaberative Filtering, Cluster Models

Security researcher to be jailed for finding bugs in software?
Topic: Technology 3:46 pm EST, Jan 11, 2005

A French security researcher who published exploit codes that could take advantage of bugs in an anti-virus application, could be imprisoned for violation of copyright laws.

Security researcher to be jailed for finding bugs in software?

Apple releases xSAN
Topic: Technology 8:11 am EST, Jan  5, 2005

In a move that can only be categorized as surprising, apple releases an enterprise SAN product. It seems to me that this could really push Xserve sales if they are successful.

Apple releases xSAN

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