PrivacySandboxAPIを使ったブラウザ上での広告オークション

by KojiOta

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,PKJ0UB 1SJWBDZ4BOECPY"1*Λ࢖ͬͨ ϒϥ΢β্Ͱͷ ޿ࠂΦʔΫγϣϯ

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w 4PGUXBSF&OHJOFFS!$ZCFS"HFOU*OD w %ZOBMZTUͱ͍͏ΞυςΫϓϩμΫτΛ։ൃ͍ͯ͠·͢ w 1SJWBDZ4BOECPY"1*ͷݕূΛओʹߦͳ͍ͬͯ·͢ w 8FCϒϥ΢β͕޷͖Ͱ͢ ࣗݾ঺հ

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w 1SJWBDZ4BOECPYʹ͍ͭͯ w ޿ࠂ഑৴ͱΦʔΫγϣϯʹ͍ͭͯ w 1SPUFDUFE"VEJFODF"1*ʹ͍ͭͯ w 1SPUFDUFE"VEJFODF"1*Λ࢖ͬͨ޿ࠂΦʔΫγϣϯͷ࣮૷ ֓ཁ

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w ϢʔβʔͷϓϥΠόγʔͱاۀͷσδλϧϏδωεΛཱ྆͢Δ w 8FCྖҬͰ͸SEQBSUZDPPLJFͷஈ֊తഇࢭޙʹSEQBSUZ DPPLJF͕୲͍ͬͯͨϢʔεέʔεΛஔ͖׵͑Δ w ࢓༷͸ඪ४Խ͞ΕΔ͜ͱΛ໨ࢦ͍ͯ͠Δ w ຊ೔࿩͢ͷ͸1SPUFDUFE"VEJFODF"1* w ޿ࠂ഑৴ͷͨΊͷ"1* 1SJWBDZ4BOECPY"1*ʹ͍ͭͯ

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w 4FMMFS΢ΣϒαΠτͷΦʔφʔɻ޿ࠂ࿮ΛചͬͯརӹΛಘ͍ͨ w FYϒϩάɺχϡʔεαΠτͳͲ w #VZFS޿ࠂओɻ޿ࠂ࿮Λߪೖͯ͠ϓϩμΫτͷ޿ࠂΛද͍ࣔͤͨ͞ w FY&$αΠτ ϝʔΧʔͳͲ ޿ࠂ഑৴ͱΦʔΫγϣϯʹ͍ͭͯ #VZFS 4FMMFS "E4MPU ޿ࠂ഑৴ʹ͓͚Δͭͷ໾ׂ

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w ΦʔΫγϣϯ4FMMFS͸ऩӹΛ࠷େԽ͢ΔͨΊʹΦʔΫγϣϯΛ։࠵͠ɺෳ਺ #VZFSΛࢀՃͤ͞Δ w "EUFDI4FMMFS΍#VZFSΛͷ୅ΘΓʹΦʔΫγϣϯʹࢀՃ͢Δ w SEQBSUZDPPLJF͸ೖࡳΛ࠷దԽ͢ΔͨΊʹ࢖ΘΕΔ w ݸʑͷϢʔβʔΛࣝผͯ͠ɺ֤Ϣʔβʔ͕࠷΋ڵຯΛ࣋ͪͦ͏ͳ޿ࠂΛදࣔ ͢Δ ޿ࠂ഑৴ͱΦʔΫγϣϯʹ͍ͭͯ "EUFDI #VZFS "EUFDI 4FMMFS "E4MPU ޿ࠂ഑৴ʹ͓͚ΔΦʔΫγϣϯ "VDUJPO

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w ϦϚʔέςΟϯάͳͲͷ޿ࠂ഑৴ख๏ΛSEQBSUZDPPLJFͳ͠Ͱ ࣮ݱ͢Δ w Ϣʔβʔͷϒϥ΢β DISPNF ্ͰΦʔΫγϣϯΛ࣮ߦ͢Δ w ΫϩεαΠττϥοΩϯάΛ๷͙ 1SPUFDUFE"VEJFODF"1*ʹ͍ͭͯ

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w લఏ w #VZFSͷཱ৔͔Βೖࡳ͢Δͱ͖ͷ࿩ w #VZFS͸ԿΛ࣮૷͢Ε͹ྑ͍͔ w ։ൃςετ࣌ͷϙΠϯτ 1SPUFDUFE"VEJFODF"1*Λ࢖ͬͨ޿ࠂΦʔΫγϣϯͷ࣮૷

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w HFOFSBUF#JE ؔ਺Λ࣮૷͢Δ w Ҿ਺Ϣʔβʔ͕ࠓ։͍͍ͯΔϖʔδͷ63- ޿ࠂओͷϖʔδͰ ͷߦಈ FUD w ฦΓ஋ೖࡳֹ ද͍ࣔͨ͠ΫϦΤΠςΟϒͷ63- FUD w ύϒϦοΫͳ63-ͰEFQMPZ͢Δ #VZFSͷ࣮૷

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ϑϩʔ 4FMMFS BEUFDI #VZFS BEUFDI ભҠ IUNMKBWBTDSJQU 4FMMFSͷKT͕ ΦʔΫγϣϯΛ։࢝͢Δ 'FUDIHFOFSBUF#JE GVODUJPO KBWBTDSJQU 3VOHFOFSBUF#JE HFOFSBUF#JE ͷҾ਺͸ લ΋ͬͯऔಘ͞ΕΔ 6TFS

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w HFOFSBUF#JE ͸TDSJQUSVOOFSͱ͍͏؀ڥͰ࣮ߦ͞ΕΔ 8PSLMFUTʹࣅ͍ͯΔ w ͍͔ͭ͘ͷ"1*͕࢖͑ͳ͍ w XJOEPX EPDVNFOU OFUXPSL %BUF FUD w &4NPEVMFT w ࣮ߦ࣌ؒʹ੍ݶ͕͔͔Δ৔߹͕͋Δ w 4FMMFS͕ઃఆͰ͖Δ #VZFSʹ͔͔Δ੍ݶ

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IUUQTXJDHHJUIVCJPUVSUMFEPWFTDSJQUSVOOFST "1*ͷ੍ݶ 5IFZ TDSJQUSVOOFST %POPUIBWFBOZPUIFS8FC*%-JOUFSGBDFTFYQPTFEUPUIFJSHMPCBM CFTJEFTUIFPOFTEF fi OFEJOUIJTTQFDJ fi DBUJPO VOMJLFPUIFS8PSLMFUUZQFT 5IFZ TDSJQUSVOOFST )BWFBSFTUSJDUFETFUPG&$."4DSJQU"1*TFYQPTFEUPUIFNGPS FYBNQMF%BUFJTOPUFYQPTFEJOUIFTFFOWJSPONFOUT w DPOUFOUTFSWJDFTBVDUJPO@XPSLMFUBVDUJPO@W@IFMQFSDD

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"SFOPUNPEVMFTDSJQUT BOEBSFJOTUFBEFWBMVBUFEBTJG UIFZXFSFDMBTTJDTDSJQUT XFCQBDLΛ࢖͏৔߹ &4NPEVMFT w HMPCBM5IJTΛ࢖͏͜ͱͰNPEVMFΛJNQPSUͰ͖Δ w IUUQTHJUIVCDPN8*$(UVSUMFEPWFJTTVFT

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w 4UFQEFCVH͕αϙʔτ͞Ε͍ͯΔ w 4PVSDFNBQ͸αϙʔτ͞Ε͍ͯͳ͍😭 σόοά &4NPEVMFT

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w HFOFSBUF#JEͷ࣮૷ΛNPEVMFͱׅͯ͠Γग़͢͜ͱͰɺOPEFKT؀ ڥͰ΋JNQPSUͯ͠ݺͼग़͢͜ͱ͕Ͱ͖Δ σόοά &4NPEVMFT HFOFSBUF#JE 'BDUPSFEPVUJNQMFNFOUBUJPO

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w ϞδϡʔϧԽ࣮ͨ͠૷Λݺͼग़͢TDSJQU DBMMFSKT Λ༻ҙ͢Δ w OPEFJOTQFDUCSLDBMMFSKT w ͍͔ͭ͘ͷؔ਺͸TDSJQUSVOOFSͷதͰ͔࣮͠ߦͰ͖ͳ͍ w FYGPS%FCVHHJOH0OMZSFQPSU"E"VDUJPO σόοά &4NPEVMFT

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w 4FMMFS͚͕࣮ͩߦ࣌ؒΛ"1*Λ࢖͏͜ͱͰ஌Δ͜ͱ͕Ͱ͖Δɻ w μϛʔͷ4FMMFS࣮૷Λ༻ҙ͢Ε͹։ൃ؀ڥͰ࣮ߦ࣌ؒΛ஌Δ͜ͱ͕Ͱ͖ Δɻ ܭଌ #JEEJOHEVSBUJPOMJNJU w ݱ࣮ͷϢʔεέʔεʹ͍࣮ۙ૷Λ௥Ճ࣮ͯ͠ߦ࣌ؒΛ૿΍ͯ͠ΈΔ

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w ೖࡳֹΛܭࢉ͢Δͷʹػցֶश͸Α͘࢖ΘΕΔ w ޿ࠂͷ঎඼ͷ஋ஈ͕ͱͯ͠ɺೖࡳֹͷ্ݶΛҎԼͱԾఆ͢Δ w $73 w ػցֶश͸͜ͷ$73Λ༧ଌ͢Δͱ͖ͳͲʹ࢖ΘΕΔ w ޿ࠂ࿮ͷαΠζΛΠϯϓοτʹ$73Λ༧ଌ͢Δؔ਺Λ࣮૷͢Δ ػցֶशͷϢʔεέʔε #JEEJOHEVSBUJPOMJNJU

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w .-NPEFMͷֶश w YBETMPUXJEUI w ZϢʔβʔ͕঎඼Λߪೖ͔ͨ͠Ͳ͏͔Λ ߪೖ ͔ ඇߪೖ Ͱද͢ w ֶशͨ͠ϞσϧΛKTPOʹγϦΞϥΠζ NMKTUSBJOJOH #JEEJOHEVSBUJPOMJNJU IUUQTHJUIVCDPNNMKTSFHSFTTJPOQPMZOPNJBM

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w γϦΞϥΠζԽͨ͠Ϟσϧ͸HFOFSBUF#JEͷҾ਺ͱͯ͠౉͢͜ͱ ͕Ͱ͖Δ USVTUFE#JEEJOH4JHOBMT w σΟγϦΞϥΠζͯ͠KTΦϒδΣΫτʹม׵ NMKTQSFEJDUJPO #JEEJOHEVSBUJPOMJNJU

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NMKTEVSBUJPO #JEEJOHEVSBUJPOMJNJU

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w %FW5PPMTͰύϑΥʔϚϯε ΛܭଌͰ͖Δ w #JEEFS8PSLMFUQBOFʹද ࣔ͞ΕΔ NMKTQFSGPSNBODF #JEEJOHEVSBUJPOMJNJU

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w .-NPEFMͷֶश w YBETMPUXJEUI w ZϢʔβʔ͕঎඼Λߪೖ͔ͨ͠Ͳ͏͔Λ ߪೖ ͔ ඇߪೖ Ͱද͢ w ֶशͨ͠ϞσϧΛCJOBSZʹ͢Δ .-XJUIXBTNUSBJOJOH 6TJOHXBTN IUUQTHJUIVCDPNTNBSUDPSFMJCTNBSUDPSF

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w AJODMVEF@CZUFTAΛ࢖ͬͯCJOBSZΛSVTUͷΦϒδΣΫτʹσΟγϦΞϥΠζ͢Δ w JODMVEF@CZUFT͸ίϯύΠϧ࣌ʹಇ͘ w KTͱSVTU XBTN ͷ૬ޓ઀ଓΛՄೳʹ͢ΔBUUSJCVUF w IUUQTHJUIVCDPNSVTUXBTNXBTNCJOEHFO .-XJUIXBTNQSFEJDUJPO 6TJOHXBTN

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w AXBTNQBDLCVJMEAXBTNϑΝΠϧͱXBTNͱKTؒͷHMVFίʔυΛੜ੒͢Δ w IUUQTHJUIVCDPNSVTUXBTNXBTNQBDL w XBTNPCKFDUΛ࡞੒͢Δ w *NQPSUUIFHMVFDPEF w XBTNNPEVMF͸Ҿ਺ʹ౉͞Ε͍ͯΔ CSPXTFS4JHOBMT w XBTNPCKFDUΛॳظԽ͢Δ w XBTNPCKFDUΛ࢖ͬͯ$73Λ༧ଌ͢Δ .-XJUIXBTNJOUFHSBUJPO 6TJOHXBTN

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w XBTNNPEVMF͸HFOFSBUF#JEͷҾ਺ͱͯ͠౉͞ΕΔ͕ɺ͜Εͷ ͓͔͛ͰXBTNPCKFDUΛॳظԽ͢Δͱ͖͸ݹ͍ํ๏Λ࢖Θͳ͚ Ε͹ͳΒͳ͘ͳΔ IUUQTEFWFMPQFSNP[JMMBPSHFO64 EPDT8FC"TTFNCMZ-PBEJOH@BOE@SVOOJOH w w /FXNFUIPE JOTUBOUJBUF4USFBNJOH w w 0MENFUIPE *OTUBODF XBTNQBDLQJUGBMMT 6TJOHXBTN

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w AUBSHFUCVOEMFSAPQUJPOPGAXBTNQBDLCVJMEA EFGBVMU XBTNQBDLCVJMEPQUJPO 6TJOHXBTN ੜ੒͞ΕͨHMVFDPEF XBTNϑΝΠϧΛωοτϫʔΫӽ͠Ͱऔಘ͍ͯ͠Δ w AUBSHFUXFCAPQUJPOPGAXBTNQBDLCVJMEA ੜ੒͞ΕͨHMVFDPEF *GZPVSFOPUVTJOHBCVOEMFSCVUZPVSFTUJMM SVOOJOHDPEFJOBXFCCSPXTFS XBTN CJOEHFOTUJMMTVQQPSUTUIJT

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w AUBSHFUXFCAPQUJPOHFOFSBUFJNQPSUNFUBVSM XBTNQBDLCVJMEPQUJPO 6TJOHXBTN w JNQPSUNFUBVSM͸XFCQBDLʹΑͬͯQVCMJD1BUIʹม׵͞ΕΔ w QVCMJD1BUI͸੩తSFTPVSDFͷ63-ͱͯ͠࢖ΘΕΔ w TDSJQUSVOOFS্Ͱྫ֎Λى͜͢ w TDSJQUSVOOFS͸ͦ΋ͦ΋OFUXPSLΞΫηεͰ͖ͳ͍ͷͰQVCMJD1BUIͷ༻్͸ͳ͍

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w &OE5P&OE͸TDSJQUSVOOFSͷ੍໿Λഁ͍ͬͯͳ͍͔ΛEFQMPZલʹ֬ೝ Ͱ͖ΔͷͰ༗༻ w 1SPUFDUFE"VEJFODF"1*ͷ৘ใ͸%FW5PPMTQSPUPDPMΛ࢖ͬͯऔಘͰ͖Δ w IUUQTDISPNFEFWUPPMTHJUIVCJPEFWUPPMTQSPUPDPMUPU 4UPSBHFFWFOUJOUFSFTU(SPVQ"DDFTTFE &OE5P&OEUFTUJOH 5FTUJOH

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w AIFBEMFTTGBMTFA w 'MBHTUPFOBCMFQSJWBDZTBOECPYBQJ 1MBZXSJHIU 5FTUJOH

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w 1MBZXSJHIU͸$%14FTTJPO"1*Λ࢖ͬͯ%FW5PPMT1SPUPDPMΛ஻ΕΔ w IUUQTQMBZXSJHIUEFWEPDTBQJDMBTTDEQTFTTJPO w *OJUJBUF$%14FTTJPO$MJFOU w &OBCMF1SPUFDUFE"VEJFODF"1*&WFOUUSBDLJOH w BVDUJPOFWFOUTΛMJTUFO͢Δ޿ࠂΦʔΫγϣϯͰউརͨ͠ͱ͖͸FWFOUUZQF͕AzXJOzʹͳ͍ͬͯΔA w 4FMMFSͷϖʔδʹભҠ͢Δ͜ͱͰΦʔΫγϣϯΛ։࢝ͤ͞Δ 1MBZXSJHIU 5FTUJOH

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w +7.΍(PͷͰ࣮ߦ͞Ε͍ͯͨ޿ࠂͷೖࡳϩδοΫ͕KTͷੈքʹ ֦͕͖ͬͯͨ w ಠಛͳ੍໿ͷதͰ࣮ߦ଎౓Λ௥ٻ࣮ͨ͠૷͕ٻΊΒΕΔɻ w $ZCFS"HFOU͸1SJWBDZ4BOECPYίϛϡχςΟʹੵۃతʹϑΟʔ υόοΫΛ͍ͯ͠Δ 8SBQVQ

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5IBOLT 8FBSFIJSJOH