The Information Distribution Platform Response Act (情報流通プラットフォーム対処法) is a law that sets how far the operators (providers) of social media, message boards and similar venues are liable when information infringing someone's rights circulates there, and the procedures for responding to victims.
Post that infringes rights
Victim requests disclosure
Operator asks the poster's view
Operator decides on disclosure
The operator weighs that view and decides whether to disclose. If the operator does not comply, court proceedings are another route.
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It was originally called the Provider Liability Limitation Act (プロバイダ責任制限法), and its main provisions free operators from liability for damages when certain conditions are met and give victims a request for disclosure of sender information (発信者情報開示請求) to identify the poster. A 2024 amendment (in force from 2025) gave the law its current name and required large operators such as major social media platforms to handle removal requests promptly and to publish their removal criteria.
AnalogyIt is like requiring the manager of a rental hall to decide in advance when a defamatory flyer on the wall should be torn down, and what steps to follow before giving the victim the contact details of whoever put it up.
How to rememberThe old name's "liability limitation" reflects the idea that operators escape liability for damages (are exempted) when conditions are met, while the new name's "response" reflects the idea of getting operators to act. The change of name mirrors a shift in where the law puts its weight.
Exam points
ExamThe law deals with cases where information circulating in places anyone can view, such as message boards and social media, infringes rights like reputation or privacy. The deciding point is whether the content of the circulated information harmed someone else's rights.
ExamUnder the Provider Liability Limitation Act (プロバイダ責任制限法), as the law was called before its renaming, and under the current law alike, an operator asked to disclose sender information (発信者情報) hears the poster's own view before deciding whether to disclose, except where the poster cannot be reached or a similar reason applies.
Mix-upThe duties and procedures under this law fall mainly on the operators who provide the venue; the poster's own liability is pursued under other laws such as the Civil Code and the Penal Code.
Netiquette (ネチケット), a blend of "network" and "etiquette," means the courtesy and consideration to observe when dealing with others on the internet.
Examples include choosing words with the reader's reaction in mind, not sending long messages or large files without regard for the recipient's situation, and not forwarding chain emails. Netiquette itself is not law, so ignoring it carries no penalty; it is a norm users keep of their own accord.
AnalogyLike lining up your shoes neatly when visiting someone's home, it is a courtesy kept for the other person even though no written rule requires it.
Exam points
Mix-upNetiquette (ネチケット) is a voluntary norm with no legal force, which makes it different in nature from the Information Distribution Platform Response Act (情報流通プラットフォーム対処法), a law that sets operators' duties and victims' procedures.
Online manners (ネットマナー) are the ways of behaving considerately toward others when using the internet, and the term means almost the same as netiquette.
The term is often used for considerate behavior in everyday situations. Examples are holding off on messages late at night or early in the morning in group chats and not pressing others to reply.
AnalogyLike keeping your voice down in a library, it carries no penalty, yet each person observes it so that everyone can use the space comfortably.
How to rememberEnglish speakers say things like "online etiquette"; ネットマナー ("net manners") is a coinage made in Japan.
Exam points
Mix-upOnline manners (ネットマナー) and netiquette (ネチケット) cover almost the same ground, and the difference lies mainly in how the words were formed. Both are voluntary norms without penalties.
Netiquette vs. Online Manners
Aspect
Netiquette
Online Manners
Key differenceWord origin
A blend of "network" and "etiquette"
A Japanese coinage combining "net" and "manners"
What it covers
Courtesy and consideration when dealing with others online
Considerate behavior when using the internet (nearly the same)
Fake news (フェイクニュース) is information that spreads untrue or distorted content in a form that looks like news reporting.
False information is created
Shares pile up on social media
Recipients check the source and evidence
If it can't be verified, don't spread it
Not sharing information that cannot be verified stops its spread right there.
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The motives vary, from attracting attention and ad revenue to steering public opinion in a particular direction, and on social media it can spread widely in a short time. Realistic images and videos made with generative AI are sometimes used as well. The basic response is for recipients to check the source and evidence (fact-checking, ファクトチェック) and not to spread anything they cannot verify.
AnalogyIf a note saying "apparently the water will be cut off from next week" comes around the neighborhood and you pass it to the next house without checking where it came from, the mistake spreads while looking like the truth.
How to remember"Fake" means counterfeit. It has the shape of news, but the contents are counterfeit, exactly as the word says.
Exam points
Mix-upNot only deliberately fabricated disinformation (偽情報) but also misinformation (誤情報) that spreads without anyone noticing it is wrong is sometimes called fake news (フェイクニュース). In both cases, checking before sharing holds back the spread.
Hate speech (ヘイトスピーチ) is speech or conduct that demeans people who share a particular attribute, such as ethnicity or nationality, because of that attribute, and stirs up exclusion or discrimination.
Online, it is easy to post anonymously and posts spread quickly, deeply wounding the dignity of the people targeted. Japan's Hate Speech Elimination Act (ヘイトスピーチ解消法), in force since 2016, makes eliminating unfair discriminatory speech against people from outside Japan a responsibility of the national government and also calls on local governments to act (it sets no penalties).
AnalogyIt is like shouting abuse at a particular group in a public square, except that online it happens without showing one's face and in front of many times more people.
How to remember"Hate" means hatred and "speech" means expression. Hatred put into words and aimed at people is exactly what the English says.
Exam points
Mix-upHate speech (ヘイトスピーチ) is a problem because it stirs up discrimination over attributes, whether or not its content is true. That sets it apart from fake news (フェイクニュース), where the core issue is whether the content is false.
Fake News vs. Hate Speech
Aspect
Fake News
Hate Speech
Key differenceWhat makes it a problem
The content is untrue or distorts the facts
It demeans people over an attribute and stirs up discrimination
If the content is true
It is not a problem as false information
Still a problem if it stirs up discrimination, even with true facts in it
What recipients do
Check the source and evidence; don't spread what can't be verified
Don't join in or spread it; asking the operator to remove it is also an option
Key points
The Information Distribution Platform Response Act sets how far operators are liable and what procedures victims can use when information circulating online infringes rights; a 2024 amendment renamed it from the Provider Liability Limitation Act.
An operator asked to disclose sender information hears the poster's own view before deciding whether to disclose, unless the poster cannot be reached or a similar reason applies (a provision unchanged from the law's former name, the Provider Liability Limitation Act, to the current law).
Netiquette and online manners mean almost the same thing, and both are voluntary norms without penalties.
The basic response to fake news is to check the source and evidence and not to spread information that cannot be verified.