Showing posts with label Users. Show all posts
Showing posts with label Users. Show all posts

Wednesday, April 24, 2013

Analysis: Truth and consequences - a dilemma for Twitter and its users



An illustration picture shows the logo of the Website Twitter on an Ipad, in Bordeaux, Southwestern France, January 30, 2013. REUTERS/Regis Duvignau

An illustration picture shows the logo of the Website Twitter on an Ipad, in Bordeaux, Southwestern France, January 30, 2013.


Credit: Reuters/Regis Duvignau






SAN FRANCISCO | Wed Apr 24, 2013 12:47pm EDT



SAN FRANCISCO (Reuters) – Does Twitter have a credibility problem?


For many, a single fake tweet from the Associated Press account that briefly roiled financial markets on Tuesday, driving the Dow Jones industrial average down about 145 points, vividly reaffirmed the fearsome, near-instantaneous power of the 140-character message.


But the security lapse also revived doubts about Twitter’s place in the media landscape – and its ultimate value – at a moment when its status as one of today’s essential information networks had seemed all but cemented.


Just a week after social media networks took criticism for helping circulate misinformation about the alleged perpetrators of the Boston Marathon bombing, Twitter’s security shortcomings fell under a harsh spotlight Tuesday after a hacker group commandeered the AP Twitter account and falsely reported that explosions in the White House had injured President Barack Obama.


The AP was only the latest hacking victim in recent days after Twitter accounts belonging to National Public Radio, CBS 60 Minutes and others were breached. Last year, Reuters News was the victim of hackers who briefly took over one of its Twitter accounts and posted false tweets.


The latest hack was by far the most significant: the single AP tweet stunned investors and effectively wiped out $ 136.5 billion of the S&P 500 index’s value in a matter of minutes.


Although the news agency later disclosed that one of its employees may have inadvertently given away company passwords as the result of a “phishing” attack by the hackers, security experts quickly faulted Twitter for its longstanding failure to implement two-factor authentication, a double-layered password feature used by the likes of Google Inc and Microsoft Inc that might have prevented the spate of high-profile Twitter hijackings.


“It’s one of those cases that we are seeing too often. It’s getting unnerving,” said Robert Quigley, a journalism lecturer specializing in social media at the University of Texas. “What media organizations need to do is pressure Twitter to have a more secure website.”


Although Twitter has repeatedly declined to address its product roadmap, the company has signaled that it will soon unveil two-factor authentication, including a public job posting in February that suggested the company was hiring to tackle the problem.


Mark Risher, the founder of a security consultancy that counts social media companies Pinterest and Tumblr among its clients, said introducing more measures like two-factor authentication would make Twitter more cumbersome to use and potentially slow its user growth – a critical concern for a company that relies on advertising revenues. But he warned that a prolonged rash of high-profile hacks, and an eroding sense of user trust, would hurt Twitter more.


“There’s always a tradeoff between convenience and safety,” Risher said. “But a security issue damages Twitter’s brand.”


NEWSWIRE OR PLATFORM


For Twitter, the hacking has raised questions about its credibility just as it is beginning to assume a central role in a fast-changing media landscape, with the volume of tweets rising to more than 400 million a day. Earlier this month, the Securities and Exchange Commission ruled that U.S. companies may report material information such as quarterly results on Twitter, as long as investors are alerted in advance. Days later, Bloomberg L.P. said it would funnel Twitter directly into its terminals used by thousands of traders on Wall Street.


At the same time, the world’s leading news organizations and Twitter, which has 200 million users around the world, have become increasingly intertwined in a symbiotic, if sometimes troublesome, relationship.


Dan Gillmor, a journalism professor at Arizona State University, said the hacks have especially hurt news outlets because their Twitter accounts are often the primary way that their news reaches consumers who may not subscribe to a newspaper or have access to a newswire.


Twitter has touted itself as a critical newswire of sorts, such as during the 2011 tsunami in Japan, when it helped emergency responders locate survivors, or when it became a vital lifeline for some New Yorkers as television sets fell dark during Hurricane Sandy last year.


But last week, in the wake of the Boston bombings, some of those who previously viewed Twitter as an indispensable news source began turning against the service upon discovering that the wisdom of crowds is, in fact, an adage not often applicable on the Internet.


Steve Brunetto, a senior executive at Edgewave, a network security company, said Tuesday’s hacking undermined Twitter at a sensitive time.


“On the heels of the Boston Marathon bombing, everyone’s trying to figure out, ‘Okay, where does Twitter fit into that news cycle? Where does Twitter fit into disseminating information?’” Brunetto said. “They’ve got an opportunity to legitimize themselves as a real player in that information life cycle but they get knocked down a peg every time somebody says, ‘Oh, you can’t believe what you read on Twitter.’”


Jeff Jarvis, a prominent Internet pundit and a journalism professor at City University of New York, said that the confusion caused by social media in recent weeks was not an indictment of social media but rather a reminder that the onus falls on professional reporters to verify information.


“No, the Internet’s not broken,” Jarvis said.


The rise of social media means that “you now hear more bar-room debates and speculation than before,” he added. “But that doesn’t mean you should believe it more than you ever did.”


Tom Schrader, managing director for U.S. equity trading at Stifel Nicolaus Capital Markets in Baltimore, said there were a lot of clues in the false AP tweet that should have kept traders from reacting, in particular the wording of the message.


“We saw it, we saw the initial reaction. Initially our reaction was, pull your bids (until we) see whether this is legit or not. We found no legitimacy to it and went back into the market as normal,” he said.


Oli Freeling-Wilkinson is chief executive officer of Knowsis, a London company that picks out and amalgamates financially relevant tweets and other social media content for traders. “We do have spam controls in place, but it’s an ongoing war,” he said. “It’s much more difficult to work out what’s going on when people are hacking into official accounts, especially in the heat of the moment.”


While Twitter has occasionally signaled that it believes it could become more than a passive distribution network – a shift marked by last year’s purchase of Summify, a small startup that specialized in surfacing relevant news – it has also taken pains to distance itself from the content of tweets and maintain strict neutrality from a legal perspective.


Twitter Chief Executive Dick Costolo told an Online News Association gathering last autumn that Twitter’s primary responsibility was to create a platform, rather than to play an editorial role in determining which tweets people should see.


“A company trying to build media is creating or curating content, and that’s not the kind of company we’re creating,” Costolo said.


Gillmor, from Arizona State, said Twitter did not need to guarantee the quality or veracity of its content in order to grow into a media juggernaut.


“It’s not whether Twitter is credible or not, it’s what people do with it,” he said. “Every news organization feels it has no alternative but to use Twitter. But everyone at the traditional news organizations has to be thinking really hard about what that means, from whether the security is sufficient on these third-party platforms to what it means to be turning part of your stuff over to new kinds of publishers.”


(Reporting By Gerry Shih; Additional reporting by Jennifer Saba, Ryan Vlastelica and Caroline Valetkevitch in New York and Alina Selyukh in Washington; Editing by Claudia Parsons)






Reuters: Business News




Analysis: Truth and consequences - a dilemma for Twitter and its users

Thursday, April 18, 2013

Reddit users may cause harm in quest to aid Boston bombing investigation


Authorities in Boston have flagged video and other images of a possible suspect in the marathon bombings. The Associated Press says there’s no identification yet. The U.S. Attorneys’ Office and the FBI have been releasing official reports about their investigation, but there’s also been amateur sleuthing taking place online at sites like Reddit and 4Chan.


“I think that Reddit is where it pops up the most because [it"s] a really popular community that is kind of networked in a way that gives it a lot of visibility,” says Adrien Chen, senior writer at the news site Gawker. “But you’ve [also] got conservative bloggers, you’ve got people on Twitter, other message boards — basically wherever anybody is talking on the Internet.”


Online postings include time-lapse animations of people seemingly fleeing the bombing scene, and people with backpacks staring unsmiling along the marathon route. Though these efforts may be in good-faith, most, if not all of the people deemed suspicious were most likely not involved.


“This is not an inherently terrible idea to try to sift through some of these pictures to help the authorities, that’s if everything goes right,” says Will Oremus, a tech writer at Slate. “If everything goes wrong, you’ve got a lot of people out there who have been identified by their face as possible terrorists and they are totally innocent.”


Though Oremus says the idea that “Redditors” could solve a crime isn’t too far-fetched.


“A year or two ago, there was a hit and run incident, a photo was posted to Reddit, some gear-head noticed that the headlight belonged to a 1990 Cadillac, he knew the make and model, and they ended up solving the crime,” says Oremus. 


To hear more about the implications of a public, crowdsourced manhunt, click on the audio player above.


Latest Stories on Marketplace.org




Reddit users may cause harm in quest to aid Boston bombing investigation

Sunday, April 14, 2013

HOT Users In Canadian Equity Markets



The Analytics Group of IIROC performed a Trading Review and Analysis of High Frequency Trading on Canadian equity markets.  IIROC uses a methodology to identify user IDs exhibiting high order-to-trade ratios, or HOT User IDs, and covers the period from August 1, 2011 to October 31, 2011.  With User ID data provided by the Regulatory feed IIROC determined HOT User ID’s by isolating the actions of placing an order, amending that order, then having the order trade.  Canceling an order and sending a new order is isolated against sending an order and amending that order.

 


 

Plotting the number of trades against the number of new and amended orders yields:

 


 

After using their methodology, HOT User IDs are identified in red with OTHER User IDs in blue:

 


So just who are these Hot Users?  They are:


  • 11% of the User IDs active in the study period;

  • 22% of share volume traded;

  • 32% of dollar value traded;

  • 42% of trades executed; and

  • 94% of new and amended orders.


The HOT Users encompass the group we would expect, those with fast processors, the fastest pipes, and the primary data feeds.  This group has been identified using the Regulatory feed account types as either:


  • DMA (Direct Market Access)

  • NDMA-IN (Non-DMA Inventory) – Inventory meaning activity related to proprietary trading activity

  • NDMA-CL (Non-DMA Client)

  • NDMA-Other (ie) specialist, non-client, options market-maker.


Ploting the order to trade ratio of Hot User IDs by account type yields:

 


 

As I highlighted in a post on Floating Path in June of 2012, ETFs are dominated by HFT over all other categories.  IIROCs study reached a similar conclusion regarding the level of HFT activity in ETFs.  This is another aspect of what is perverted within the current market structure: the derivatives now price the underlyings as it is easier to calculate in rapid fashion, a group of set prices, such as a SPYs constituency, instead of the fundamental analysis required to price the individual companies.  This rapid calculation leads to repeated revisions and makes the ETF market more appealing for those looking to execute trades on the predictive power of price movement over the predictive power of a public company’s earnings.  The Canadian market is populated in much the same fashion, with the NDMA-Other – specialist, non-client, options market-maker account type having the largest ratio:

 








Whether measured by volume traded, valued (sic) traded or number of trades executed NDMA-CL and DMA were more active in common shares and NDMA-IN and NDMA-Other were more active in ETF/Ns.


With the individual activity identified, we can now measure the interaction broken down by order types and whom they traded with:

 


 


 

27% of the volume by Retail participants involved interaction with HOT Users, as you’d expected, being the DMAs.  As for the dark markets in Canada, HOT Users were responsible for a larger percentage of activity than on the lit markets, 39% vs. 21%:

 


 

The paper continues into an analysis of rebates earned, security types, liquidity categories, price bands popularity levels, inter-listed security activity, New and Amended Orders and Order-to-trade ratios, and trading venues.  The paper is must read for all those interested in identifying and valuing the activity levels of specific types of participants in equity markets.  It is one of the more transparent papers and it draws on input from many of the papers included in R.T. Leuchtkafer bibliography.

 



The HOT Study Phases I and II of IIROC’s Study of High Frequency Trading Activity on Canadian Equity Market… by calibrateconfidence






    




Zero Hedge




HOT Users In Canadian Equity Markets