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Gary Edwards

Why Mozilla is committed to Gecko as WebKit popularity grows: Page 1 - 0 views

  • One of the primary reasons for the enormous complexity of the Gecko code base is that it aims to provide much more than just an HTML renderer. Mozilla's early goals were extremely ambitious—the original Mozilla application suite included a browser, a complete mail and newsgroup program, a web design tool, and an IRC client. In addition to rendering HTML, Gecko also provides a versatile XML-based user interface rendering framework called XUL that was used extensively in those applications. XUL is still used today to create the Firefox user interface, and it facilitates that browser's support for extensions, which are regarded by many enthusiasts as one of the most valuable features offered by Firefox.
  • XPCOM, a powerful component system
  • Gecko 1.9 uses the cross-platform Cairo rendering framework.
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  • reflow algorithm
  • Firefox 4 and replaces XPCOM reference counting with real garbage collection
  • support for some CSS 3 features that are implemented in WebKit.
  • TraceMonkey engine landed in recent nightly builds and will likely be included in 3.1; it massively boosts JavaScript performance
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    The consensus of the developers who are using WebKit is clear: it's an outstanding rendering engine that lends itself to an extremely diverse assortment of practical uses. It is everywhere, and it is gaining traction at a very impressive rate. That traction is causing some developers to question whether Mozilla's Gecko rendering engine is still relevant.
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    Historical walkthrough comparing two great rendering engines (layout); Mozilla Gecko and WebKit.
Gary Edwards

New mobile browsers bringing real Web to handhelds - Network World - 0 views

  • All of them have in common powerful, modern rendering engines, which make it possible for the browsers to display Web sites that look like those you see with a desktop browser. Safari and the Nokia browser use the same rendering engine: the open source WebKit. All Firefox projects use the same rendering engine, Gecko. Opera has over a decade invested in its core engine.
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Paul Merrell

Haavard - 300 million users strong, Opera moves to WebKit - 1 views

  • Today, we announced that Opera has reached 300 million active users. At the same time, we made the official announcement that Opera will move from Presto to WebKit as the engine at the core of the browser.
  • It was always a goal to be compatible with the real web while also supporting and promoting open standards.That turns out to be a bit of a challenge when you are faced with a web that is not as open as one might have wanted. Add to that the fact that it is constantly changing and that you don't get site compatibility for free (which some browsers are fortunate enough to do), and it ends up taking up a lot of resources - resources that could have been spent on innovation and polish instead.
  • Although I was skeptical at first when I started hearing about the switch, I am now fully convinced that it is the right thing to do. Not only will it free up significant engineering resources at Opera and allow us to do more innovation instead of constantly trying to adapt to the web, but our users should benefit from better site compatibility and more innovative features and polish.This move allows us to focus even more on the actual user experience.
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  • If switching to WebKit allows us to accelerate our growth and become an important contributor to the project (we will contribute back to WebKit, and have already submitted our first patch (bug)), we may finally have a direct impact on the way web sites are coded. We want sites to be coded for open standards rather than specific browsers.
  • WebKit has matured enough that it is actually possible to make the switch, and we can help it mature even further. In return, we get to spend more resources on a better user experience, and less on chasing an ever-changing web.This move allows us to create a platform for future growth because it allows us to focus our resources on things that can actually differentiate Opera from the competition, and could help the web move in the right direction.
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    And so there will be only three major web page rendering engines, webkit, mozilla's gecko, and MSIE. with only webkit in the ascendancy. 
Gary Edwards

Cocoa for Windows + Flash RiA Killer = SproutCore JavaScript Framework - RoughlyDrafted... - 0 views

  • SproutCore brings the values of Leopard’s Cocoa to the web, domesticating JavaScript into a functional application platform with lots of free built-in support for desktop features. Being based on open web standards and being open source itself means SproutCore will enable developers to develop cross platform applications without being tied to either a plugin architecture or its vendor. Sitting on top of web standards will also make it easy for Apple and the community to push SproutCore ahead without worrying about incompatible changes to the underlying layers of Windows, a significant problem for the old Yellow Box or some new Cocoa analog. SproutCore also lives in a well known security context, preventing worries about unknown holes being opened up by a new runtime layer.
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    The story of Javascript and the browser as a RiA competitor continues to unfold. This lengthy summation from roughlydrafed is perhaps the best discussion 'i've ever seen of technologies that will drive the Future of the Open Web. Roughly believes that Apple and Google are fighting for an Open Web Future, with Adobe and Microsoft RiA jousting for a broken web where they dominate the application development. For usre the web is moving to become an application platform. The question is one of who will own the dominant API, and be in position to impose a global platform tax. This is a great summary demanding a careful read. It also confirms my belief that the WebKit layout and document model is the way forward. It's by far and away the best (X)HTML-CSS-DOM-JavaScript model out there. The W3C alternatives do not include JavaScript, and that pretty much seals their fate. And while there are many JavaScript libraries and frameworks to chose from, i would pay close attention to three initiatives: WebKit SproutCore, Gecko jQuery, and Google GWT. ~ge~
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Gary Edwards

Running beyond the browser - 0 views

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    Although there are many ways to slice this discussion, it might be useful to compare Adobe RIA and Microsoft Silverlight RIA in terms of web ready, highly interactive documents. The Adobe RIA story is quite different from that of Silverlight. Both however exploit the shortcomings of browsers; shortcomings that are in large part, i think, due to the disconnect the browser community has had with the W3C. The W3C forked off the HTML-CSS path, putting the bulk of their attention into XML, RDF and the Semantic Web. The web developer community stayed the course, pushing the HTML-CSS envelope with JavaScript and some rather stunning CSS magic. Adobe seems to have picked up the HTML-CSS-Javascript trail with a Microsoft innovation to take advantage of browser cache, DHTML (Dynamic HTML). DHTML morphs into AJAX, (which so wild as to have difficulty scaling). And AJAX gets tamed by an Adobe-Apple sponsored WebKit. Most people see WebKit as a browser specific layout engine, and compare it to the IE and Gecko on those terms. I would argue however that WebKit is both a document model and, a document format. For sure it's a framework for very advanced HTML-CSS-DOM-Javascript work. Because the Adobe AIR run-time is based on WebKit layout, WebKit documents can hit on all cylinders across any browser able to implement the AIR plug-in. Meaning, web developers and web content providers need only target the WebKit document model to attain the interactive access ubiquity all seek. Very cool. Let me also add that the WebKit HTML-CSS-DOM-Javascript model is capable of "fixed/flow" representation. I'll explain the importance of "fixed/flow" un momento, but think about how iPhone renders a web page and you'll understand the "flow" side of this equation.
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Paul Merrell

From Radio to Porn, British Spies Track Web Users' Online Identities - 1 views

  • HERE WAS A SIMPLE AIM at the heart of the top-secret program: Record the website browsing habits of “every visible user on the Internet.” Before long, billions of digital records about ordinary people’s online activities were being stored every day. Among them were details cataloging visits to porn, social media and news websites, search engines, chat forums, and blogs. The mass surveillance operation — code-named KARMA POLICE — was launched by British spies about seven years ago without any public debate or scrutiny. It was just one part of a giant global Internet spying apparatus built by the United Kingdom’s electronic eavesdropping agency, Government Communications Headquarters, or GCHQ. The revelations about the scope of the British agency’s surveillance are contained in documents obtained by The Intercept from National Security Agency whistleblower Edward Snowden. Previous reports based on the leaked files have exposed how GCHQ taps into Internet cables to monitor communications on a vast scale, but many details about what happens to the data after it has been vacuumed up have remained unclear.
  • Amid a renewed push from the U.K. government for more surveillance powers, more than two dozen documents being disclosed today by The Intercept reveal for the first time several major strands of GCHQ’s existing electronic eavesdropping capabilities.
  • The surveillance is underpinned by an opaque legal regime that has authorized GCHQ to sift through huge archives of metadata about the private phone calls, emails and Internet browsing logs of Brits, Americans, and any other citizens — all without a court order or judicial warrant
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  • A huge volume of the Internet data GCHQ collects flows directly into a massive repository named Black Hole, which is at the core of the agency’s online spying operations, storing raw logs of intercepted material before it has been subject to analysis. Black Hole contains data collected by GCHQ as part of bulk “unselected” surveillance, meaning it is not focused on particular “selected” targets and instead includes troves of data indiscriminately swept up about ordinary people’s online activities. Between August 2007 and March 2009, GCHQ documents say that Black Hole was used to store more than 1.1 trillion “events” — a term the agency uses to refer to metadata records — with about 10 billion new entries added every day. As of March 2009, the largest slice of data Black Hole held — 41 percent — was about people’s Internet browsing histories. The rest included a combination of email and instant messenger records, details about search engine queries, information about social media activity, logs related to hacking operations, and data on people’s use of tools to browse the Internet anonymously.
  • Throughout this period, as smartphone sales started to boom, the frequency of people’s Internet use was steadily increasing. In tandem, British spies were working frantically to bolster their spying capabilities, with plans afoot to expand the size of Black Hole and other repositories to handle an avalanche of new data. By 2010, according to the documents, GCHQ was logging 30 billion metadata records per day. By 2012, collection had increased to 50 billion per day, and work was underway to double capacity to 100 billion. The agency was developing “unprecedented” techniques to perform what it called “population-scale” data mining, monitoring all communications across entire countries in an effort to detect patterns or behaviors deemed suspicious. It was creating what it said would be, by 2013, “the world’s biggest” surveillance engine “to run cyber operations and to access better, more valued data for customers to make a real world difference.”
  • A document from the GCHQ target analysis center (GTAC) shows the Black Hole repository’s structure.
  • The data is searched by GCHQ analysts in a hunt for behavior online that could be connected to terrorism or other criminal activity. But it has also served a broader and more controversial purpose — helping the agency hack into European companies’ computer networks. In the lead up to its secret mission targeting Netherlands-based Gemalto, the largest SIM card manufacturer in the world, GCHQ used MUTANT BROTH in an effort to identify the company’s employees so it could hack into their computers. The system helped the agency analyze intercepted Facebook cookies it believed were associated with Gemalto staff located at offices in France and Poland. GCHQ later successfully infiltrated Gemalto’s internal networks, stealing encryption keys produced by the company that protect the privacy of cell phone communications.
  • Similarly, MUTANT BROTH proved integral to GCHQ’s hack of Belgian telecommunications provider Belgacom. The agency entered IP addresses associated with Belgacom into MUTANT BROTH to uncover information about the company’s employees. Cookies associated with the IPs revealed the Google, Yahoo, and LinkedIn accounts of three Belgacom engineers, whose computers were then targeted by the agency and infected with malware. The hacking operation resulted in GCHQ gaining deep access into the most sensitive parts of Belgacom’s internal systems, granting British spies the ability to intercept communications passing through the company’s networks.
  • In March, a U.K. parliamentary committee published the findings of an 18-month review of GCHQ’s operations and called for an overhaul of the laws that regulate the spying. The committee raised concerns about the agency gathering what it described as “bulk personal datasets” being held about “a wide range of people.” However, it censored the section of the report describing what these “datasets” contained, despite acknowledging that they “may be highly intrusive.” The Snowden documents shine light on some of the core GCHQ bulk data-gathering programs that the committee was likely referring to — pulling back the veil of secrecy that has shielded some of the agency’s most controversial surveillance operations from public scrutiny. KARMA POLICE and MUTANT BROTH are among the key bulk collection systems. But they do not operate in isolation — and the scope of GCHQ’s spying extends far beyond them.
  • The agency operates a bewildering array of other eavesdropping systems, each serving its own specific purpose and designated a unique code name, such as: SOCIAL ANTHROPOID, which is used to analyze metadata on emails, instant messenger chats, social media connections and conversations, plus “telephony” metadata about phone calls, cell phone locations, text and multimedia messages; MEMORY HOLE, which logs queries entered into search engines and associates each search with an IP address; MARBLED GECKO, which sifts through details about searches people have entered into Google Maps and Google Earth; and INFINITE MONKEYS, which analyzes data about the usage of online bulletin boards and forums. GCHQ has other programs that it uses to analyze the content of intercepted communications, such as the full written body of emails and the audio of phone calls. One of the most important content collection capabilities is TEMPORA, which mines vast amounts of emails, instant messages, voice calls and other communications and makes them accessible through a Google-style search tool named XKEYSCORE.
  • As of September 2012, TEMPORA was collecting “more than 40 billion pieces of content a day” and it was being used to spy on people across Europe, the Middle East, and North Africa, according to a top-secret memo outlining the scope of the program. The existence of TEMPORA was first revealed by The Guardian in June 2013. To analyze all of the communications it intercepts and to build a profile of the individuals it is monitoring, GCHQ uses a variety of different tools that can pull together all of the relevant information and make it accessible through a single interface. SAMUEL PEPYS is one such tool, built by the British spies to analyze both the content and metadata of emails, browsing sessions, and instant messages as they are being intercepted in real time. One screenshot of SAMUEL PEPYS in action shows the agency using it to monitor an individual in Sweden who visited a page about GCHQ on the U.S.-based anti-secrecy website Cryptome.
  • Partly due to the U.K.’s geographic location — situated between the United States and the western edge of continental Europe — a large amount of the world’s Internet traffic passes through its territory across international data cables. In 2010, GCHQ noted that what amounted to “25 percent of all Internet traffic” was transiting the U.K. through some 1,600 different cables. The agency said that it could “survey the majority of the 1,600” and “select the most valuable to switch into our processing systems.”
  • According to Joss Wright, a research fellow at the University of Oxford’s Internet Institute, tapping into the cables allows GCHQ to monitor a large portion of foreign communications. But the cables also transport masses of wholly domestic British emails and online chats, because when anyone in the U.K. sends an email or visits a website, their computer will routinely send and receive data from servers that are located overseas. “I could send a message from my computer here [in England] to my wife’s computer in the next room and on its way it could go through the U.S., France, and other countries,” Wright says. “That’s just the way the Internet is designed.” In other words, Wright adds, that means “a lot” of British data and communications transit across international cables daily, and are liable to be swept into GCHQ’s databases.
  • A map from a classified GCHQ presentation about intercepting communications from undersea cables. GCHQ is authorized to conduct dragnet surveillance of the international data cables through so-called external warrants that are signed off by a government minister. The external warrants permit the agency to monitor communications in foreign countries as well as British citizens’ international calls and emails — for example, a call from Islamabad to London. They prohibit GCHQ from reading or listening to the content of “internal” U.K. to U.K. emails and phone calls, which are supposed to be filtered out from GCHQ’s systems if they are inadvertently intercepted unless additional authorization is granted to scrutinize them. However, the same rules do not apply to metadata. A little-known loophole in the law allows GCHQ to use external warrants to collect and analyze bulk metadata about the emails, phone calls, and Internet browsing activities of British people, citizens of closely allied countries, and others, regardless of whether the data is derived from domestic U.K. to U.K. communications and browsing sessions or otherwise. In March, the existence of this loophole was quietly acknowledged by the U.K. parliamentary committee’s surveillance review, which stated in a section of its report that “special protection and additional safeguards” did not apply to metadata swept up using external warrants and that domestic British metadata could therefore be lawfully “returned as a result of searches” conducted by GCHQ.
  • Perhaps unsurprisingly, GCHQ appears to have readily exploited this obscure legal technicality. Secret policy guidance papers issued to the agency’s analysts instruct them that they can sift through huge troves of indiscriminately collected metadata records to spy on anyone regardless of their nationality. The guidance makes clear that there is no exemption or extra privacy protection for British people or citizens from countries that are members of the Five Eyes, a surveillance alliance that the U.K. is part of alongside the U.S., Canada, Australia, and New Zealand. “If you are searching a purely Events only database such as MUTANT BROTH, the issue of location does not occur,” states one internal GCHQ policy document, which is marked with a “last modified” date of July 2012. The document adds that analysts are free to search the databases for British metadata “without further authorization” by inputing a U.K. “selector,” meaning a unique identifier such as a person’s email or IP address, username, or phone number. Authorization is “not needed for individuals in the U.K.,” another GCHQ document explains, because metadata has been judged “less intrusive than communications content.” All the spies are required to do to mine the metadata troves is write a short “justification” or “reason” for each search they conduct and then click a button on their computer screen.
  • Intelligence GCHQ collects on British persons of interest is shared with domestic security agency MI5, which usually takes the lead on spying operations within the U.K. MI5 conducts its own extensive domestic surveillance as part of a program called DIGINT (digital intelligence).
  • GCHQ’s documents suggest that it typically retains metadata for periods of between 30 days to six months. It stores the content of communications for a shorter period of time, varying between three to 30 days. The retention periods can be extended if deemed necessary for “cyber defense.” One secret policy paper dated from January 2010 lists the wide range of information the agency classes as metadata — including location data that could be used to track your movements, your email, instant messenger, and social networking “buddy lists,” logs showing who you have communicated with by phone or email, the passwords you use to access “communications services” (such as an email account), and information about websites you have viewed.
  • Records showing the full website addresses you have visited — for instance, www.gchq.gov.uk/what_we_do — are treated as content. But the first part of an address you have visited — for instance, www.gchq.gov.uk — is treated as metadata. In isolation, a single metadata record of a phone call, email, or website visit may not reveal much about a person’s private life, according to Ethan Zuckerman, director of Massachusetts Institute of Technology’s Center for Civic Media. But if accumulated and analyzed over a period of weeks or months, these details would be “extremely personal,” he told The Intercept, because they could reveal a person’s movements, habits, religious beliefs, political views, relationships, and even sexual preferences. For Zuckerman, who has studied the social and political ramifications of surveillance, the most concerning aspect of large-scale government data collection is that it can be “corrosive towards democracy” — leading to a chilling effect on freedom of expression and communication. “Once we know there’s a reasonable chance that we are being watched in one fashion or another it’s hard for that not to have a ‘panopticon effect,’” he said, “where we think and behave differently based on the assumption that people may be watching and paying attention to what we are doing.”
  • When compared to surveillance rules in place in the U.S., GCHQ notes in one document that the U.K. has “a light oversight regime.” The more lax British spying regulations are reflected in secret internal rules that highlight greater restrictions on how NSA databases can be accessed. The NSA’s troves can be searched for data on British citizens, one document states, but they cannot be mined for information about Americans or other citizens from countries in the Five Eyes alliance. No such constraints are placed on GCHQ’s own databases, which can be sifted for records on the phone calls, emails, and Internet usage of Brits, Americans, and citizens from any other country. The scope of GCHQ’s surveillance powers explain in part why Snowden told The Guardian in June 2013 that U.K. surveillance is “worse than the U.S.” In an interview with Der Spiegel in July 2013, Snowden added that British Internet cables were “radioactive” and joked: “Even the Queen’s selfies to the pool boy get logged.”
  • In recent years, the biggest barrier to GCHQ’s mass collection of data does not appear to have come in the form of legal or policy restrictions. Rather, it is the increased use of encryption technology that protects the privacy of communications that has posed the biggest potential hindrance to the agency’s activities. “The spread of encryption … threatens our ability to do effective target discovery/development,” says a top-secret report co-authored by an official from the British agency and an NSA employee in 2011. “Pertinent metadata events will be locked within the encrypted channels and difficult, if not impossible, to prise out,” the report says, adding that the agencies were working on a plan that would “(hopefully) allow our Internet Exploitation strategy to prevail.”
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