In those cases, schools usually block access to the career services they offer to degree-holding alumni.
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The original legislation would have allowed authorities to block access to an offending site.
Fifteen hundred Scientologists crowded into the courthouse, trying to block access to the documents.
Pakistan had reportedly asked Youtube and its parent company, Google, to block access to the video.
The High Court plans to announce in June whether internet service providers should block access to the site.
BBC: Microsoft Windows Messenger blocks The Pirate Bay links
This argues that patents block access to essential drugs and that intellectual-property rights offer few advantages to developing countries.
First there was AOL. Remember how hard it was to block access to what most admins considered a trivial time waster?
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The messages suggest that the attack was organised to protest against efforts to block access to The Pirate Bay's (TPB) file-sharing pages.
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Secure web gateways also rely on reputation to quickly identify sources of malware and block access to URLs that are known to contain malware.
The Flint Journal reported this week that a Michigan school district recently had to block access to college basketball games over its computer network.
Virgin Media has become the latest UK ISP to block access to Newzbin 2, a members-only site which provides links to pirated films and music.
This would allow the industry to block access to web sites both in Germany and outside the country that have been found to carry pirated music.
Germany, Estonia, Sweden and Hungary have either passed or are contemplating laws to force internet providers to block access to gambling websites, says Gambling Compliance, a consultancy.
Representative Henry Waxman (D-Calif.) is tapping Wu for advice on legislation that would make it illegal for phone companies to block access to the Internet on mobile devices.
This movement has been most prominent in Europe, where last summer a Belgian court ordered an ISP to block access to a site alleged to contain copyright infringing materials.
It features a tiny keyboard built for small hands, as well as parental control software that can limit log-on time or block access to certain Web sites and applications.
Dutch banks face prosecution if they transfer money to online-gambling firms abroad, and Germany, Italy and Spain are trying to get internet service-providers to block access to gambling websites.
In the UK, the British Phonographic Industry (BPI) took action to the courts, obtaining a court order to force internet service providers to block access to file-sharing site The Pirate Bay.
In the past week, the Motion Picture Association - a group representing film studios - successfully applied for a court injunction requiring BT to block access to an infringing website called Newzbin2.
In Germany, where a ban on online gambling came into force last year, the state of North Rhine-Westphalia has ordered Betfair, a British firm (see article), to block access to its residents.
The company plans to report back to the court, but in the meantime, it has filed an appeal to the order to block access to its U.S site to French users, the spokeswoman said.
In Russia, government prosecutors convinced its Supreme Court last year to order an Internet provider to block access to online gambling sites, but PokerStars, like other online firms, continues to draw Russian customers from other sites.
Just this week, the English High Court ordered six of the country's Internet service providers to block access to the Swedish site The Pirate Bay on the grounds that it induced its users to infringe copyright.
Furthermore, independent risk research can hardly be conducted since the companies can block access to research material or ask the scientists to sign contracts where they agree not to publish anything that is not agreed with the company.
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Thus far, however, Yahoo has not missed a court appearance, and it submitted a report Monday from an expert witness who said that a totally effective technology solution allowing Yahoo to block access to its auctions by region could not be implemented.
CNN: Technology - Yahoo! opens legal can of worms with sale of Nazi-related items
Mr Harris's lawyer had tried to block access to the postings, but a judge ruled that once the messages had been sent they became the property of Twitter, meaning the defendant was not protected by Fourth Amendment protection against unlawful search and seizure.
Due to a French law making it illegal to exhibit or sell objects with racist overtones, a Paris court last month ordered U.S.-based Yahoo to report back on July 24 exactly how the company plans to block access to the Nazi material from French Internet users.
That convenience is what helped the internet grown and because the internet was not run by a company (unlike online services like AOL), anyone from Jeff Bezos to Sergey Brin or Marc Andreessen could go and set up a site or distribute an app, safe in the knowledge that there really was no way to block access to it.
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