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Google Safe Browsing is a service provided by Google that provides lists of URLs for web resources that contain malware or phishing content. The Google Chrome, Apple Safari and Mozilla Firefox web browsers use the lists from the Google Safe Browsing service for checking pages against potential threats.〔(【引用サイトリンク】title=Firefox Phishing and Malware Protection )〕〔(【引用サイトリンク】title=Phishing and malware detection )〕 Google also provides a public API for the service.〔(【引用サイトリンク】title=Safe Browsing API )〕 Google also provides information to Internet service providers, by sending e-mail alerts to autonomous system operators regarding threats hosted on their networks.〔 According to Google, as of June 2012, some 600 million Internet users were using this service, either directly or indirectly. == Privacy == Google maintains the ''Safe Browsing Lookup API'', which has a privacy drawback: "The URLs to be looked up are not hashed so the server knows which URLs the API users have looked up". The ''Safe Browsing API v3'', on the other hand, compares 32-bit hash prefixes of the URL to preserve privacy.〔(【引用サイトリンク】title=Developer's Guide (v3) )〕〔(【引用サイトリンク】title=Safe Browsing API - Google Developers )〕 The Firefox and Safari browsers use the latter.〔(【引用サイトリンク】title=Did Google withhold malware protection details from partners? )〕 Safe Browsing also stores a mandatory preferences cookie on the computer〔(【引用サイトリンク】title=Cookies from Nowhere )〕 which the US National Security Agency allegedly uses to identify individual computers for purposes of exploitation. Google Safe Browsing "conducts client-side checks. If a website looks suspicious, it sends a subset of likely phishing and social engineering terms found on the page to Google to obtain additional information available from Google's servers on whether the website should be considered malicious". Logs, "including an IP address and one or more cookies" are kept for two weeks. They are "tied to the other Safe Browsing requests made from the same device."〔(【引用サイトリンク】title=Google Chrome Privacy Whitepaper )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Google Safe Browsing」の詳細全文を読む スポンサード リンク
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