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• Social media bring business, but add security quagmire

  Social media - Facebook, Twitter, LinkedIn, Google+ and so forth - has become a way of life for companies and their employees to interact with the public, but beating back the fraudsters that try to prey on customers, not to mention keeping employees from spilling sensitive data, is becoming a full-time job for many.

• Wall Street Beat: Tech earnings continue to be mixed

  As the earnings season wanes, quarterly financial reports from the tech sector continue to be mixed, though shares in IT companies are still up for the year.

• LinkedIn tp buy SlideShare for $119M

  LinkedIn is acquiring SlideShare, which allows its users to share presentations online, for US$118.75 million as it tries to find new ways to make its site more useful, the company said on Thursday.

• IT execs must deal soon with worker use of social tools

  ORLANDO -- IT execs are forever concerned about the growing number of gadgets workers are bringing from home for use in the enterprise.

• Internet resumes discourage big lies

  People are less likely to lie about big things on resumes they post on the professional network LinkedIn compared with traditional resumes, according to a new study.

• Get Hadoop certified ... fast

  IT professionals are scrambling to get trained and certified in what's expected to be the hottest new high-tech skill for 2012: Hadoop.

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  Wall Street Beat: Yelp IPO another sign of hot tech market

  Earnings season has essentially ended, but Yelp's initial public offering Friday, Apple's record high share price and a strong market for IT stocks are giving tech investors plenty to get excited about.

• Former Packeteer head has new networking startup

  Former Packeteer CEO Craig Elliott has a cloud-based startup in stealth mode called Pertino Networks that is promising to "reinvent networking" by delivering "big IT capabilities in minutes with revolutionary simplicity, security and flexibility."

• Wall Street Beat: Facebook rides wave of tech, Internet IPOs

  Facebook may end up being the biggest name on the IPO calendar this year, but it's also part of a trend in which technology, and particularly Internet companies, are outpacing public offerings from businesses in other sectors.

• Before Facebook: How other recent dot-com IPOs have fared

  Although Facebook (FB - to be traded on NASDAQ or NYSE) is by far the most high-profile dot-com company to go public over the past year, it is actually one of several companies that have led to a revival of web company IPOs. And while many dot-com IPOs have been long on hype, they haven't yet paid off in terms of shareholder value.

• Phoney iPads, iPhones put Apple engineers' trustworthiness to test

  One way Apple keeps details of anticipated products such as the iPad 3 or iPhone 5 under wraps is reportedly by ensuring its engineers are super trustworthy.

• Google, Microsoft, Facebook, Bank of America team to wipe out phishing

  Can industry heavyweights Google, PayPal, Microsoft and AOL -- along with 11 others in high-tech such as Facebook and LinkedIn, as well as the financial world's Bank of America and Fidelity Investments -- succeed in stopping phishing attacks right in their tracks? In uniting behind an effort called DMARC.org unveiled today, the group says it can through policy-based steps filter out spoofed email that attackers use for phishing.

• Accused Kelihos botnet maker worked for two security firms

  A Russian man who was accused Monday by Microsoft of creating the Kelihos botnet worked for a pair of security-related firms from 2005 to 2011, according to evidence on the Web.

• LinkedIn open sources search engine

  Joining its fellow social-networking companies in the public release of internal code, LinkedIn has opened sourced software obtained in October with its acquisition of the IndexTank search-engine software provider.

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  Wall Street Beat: IPOs, M&A, chip news stir tech optimism

  Zynga's initial public offering Friday, a raft of acquisition announcements this week from IBM, Salesforce and others, and some upbeat reports on the chip and hardware sector are putting a positive spin on year-end news for the tech sector.