åä¿¡çã¯ãããŠã³ã¹ããã«åä¿¡ã¡ãŒã«ãµãŒããŒã«åãå ¥ããããã¡ãŒã«ã®å²åãæž¬å®ããŸããå°éçãšã¯ç°ãªããåä¿¡çã¯åä¿¡ç®±ã«å±ãããè¿·æã¡ãŒã«ãã©ã«ãã«å±ãããã«é¢ä¿ãªããããŠã³ã¹ããªãã£ããã¹ãŠã®ã¡ãŒã«ãå«ã¿ãŸããé«ãåä¿¡çã¯ãã¡ãŒã«ãåæãµãŒããŒã¬ãã«ã®ãã§ãã¯ã«åæ Œããããšã瀺ããŸãããåä¿¡ç®±ãžã®é 眮ãä¿èšŒãããã®ã§ã¯ãããŸããã
ããã¯ã¹ãã£ãã¿ãŒã¯ãã¹ãããŒã«ãã£ãŠã¡ãŒã«ã¢ãã¬ã¹ãåœè£ ãããç¡é¢ä¿ãªç¬¬äžè ã«éä¿¡ãããèªåããŠã³ã¹ã¡ãã»ãŒãžã§ããã¹ãããŒãåœã®éä¿¡è ã¢ãã¬ã¹ã䜿çšããŠå€§éã¡ãŒã«ãéä¿¡ãããšãã¡ãŒã«ãµãŒããŒã¯åœè£ ãããã¢ãã¬ã¹ææè ã®åä¿¡ãã¬ã€ã溢ããããããŠã³ã¹éç¥ãçæããŸãããã®ä»éçãªã¹ãã 被害ã¯ãã¡ãŒã«é ä¿¡çãšéä¿¡è ã¬ãã¥ããŒã·ã§ã³ã«æ·±å»ãªåœ±é¿ãäžããå¯èœæ§ããããŸãã
ãããã¯ãªã¹ãïŒãã©ãã¯ãªã¹ããŸãã¯æåŠãªã¹ããšãåŒã°ããïŒã¯ãã¹ãã ãè©æ¬ºããã®ä»ã®æªæã®ããã¡ãŒã«æŽ»åã®ãœãŒã¹ãšããŠç¹å®ãããIPã¢ãã¬ã¹ãšãã¡ã€ã³ã®ãªã¢ã«ã¿ã€ã ããŒã¿ããŒã¹ã§ããéä¿¡IPãŸãã¯ãã¡ã€ã³ããããã¯ãªã¹ãã«è¡šç€ºããããšãã¡ãŒã«ãããã€ããŒã¯ã¡ãã»ãŒãžãå®å šã«æåŠããããçŽæ¥ã¹ãã ãã©ã«ããŒã«ã«ãŒãã£ã³ã°ããå¯èœæ§ããããåä¿¡è ã«å°éããèœåã«æ·±å»ãªåœ±é¿ãäžããŸãã
ã¡ãŒã«ããŠã³ã¹çã¯ãåä¿¡è ã®åä¿¡ç®±ã«é ä¿¡ã§ããªãã£ãéä¿¡ã¡ãŒã«ã®å²åã§ããããŠã³ã¹ããã¡ãŒã«ã®æ°ãéä¿¡ããã¡ãŒã«ã®ç·æ°ã§å²ãã100ãæããŠèšç®ãããŸããããŠã³ã¹çã¯ã¡ãŒã«å°éçã®éèŠãªææšã§ãããé«ãããŠã³ã¹çã¯éä¿¡è ã¬ãã¥ããŒã·ã§ã³ãæãªãããã©ãã¯ãªã¹ãç»é²ã«ã€ãªããå¯èœæ§ããããŸãã
ã¡ãŒã«ã®èŠæ ã¯ãåä¿¡è ãã¡ãŒã«ã¯ã©ã€ã¢ã³ãã®å ±åæ©èœã䜿çšããŠã¡ãŒã«ãã¹ãã ãŸãã¯è¿·æã¡ãŒã«ãšããŠããŒã¯ãããšãã«çºçããŸããèŠæ çã¯ãã¡ãŒã«ãäžèŠãšãã©ã°ä»ãããåä¿¡è ã®å²åãæž¬å®ããéåžžã¯ãã£ã³ããŒã³ããšãŸãã¯æéçµéã§èšç®ãããŸããé«ãèŠæ çã¯éä¿¡è ã¬ãã¥ããŒã·ã§ã³ãæãªããåä¿¡ãã¬ã€ãããã€ããŒãã¡ãã»ãŒãžãå®å šã«ãããã¯ãŸãã¯ãã£ã«ã¿ãªã³ã°ããåå ãšãªããŸãã
DDoSïŒåæ£åãµãŒãã¹æåŠæ»æïŒã¯ãè€æ°ã®äŸµå®³ãããã·ã¹ãã ãã¿ãŒã²ãããµãŒããŒãŸãã¯ãããã¯ãŒã¯ã«å§åçãªãã©ãã£ãã¯ãéã蟌ã¿ããµãŒãã¹äžæãåŒãèµ·ãããµã€ããŒæ»æã§ããã¡ãŒã«ã€ã³ãã©ã¹ãã©ã¯ãã£ã«ãããŠãDDoSæ»æã¯ã¡ãŒã«ãµãŒããŒãæ©èœäžå šã«ããæ£åœãªã¡ãŒã«é ä¿¡ã劚ããéä¿¡ã·ã¹ãã ãå±éºã«ãããå¯èœæ§ããããŸãããããã®æ»æã¯ããµãŒããŒãªãœãŒã¹ãšåž¯åå¹ ãæ¯æžããã倧éã®æªæãããã©ãã£ãã¯ãçæããããã«ããããããã䜿çšããããšãå€ãã§ãã
ã¡ãŒã«å°éçã¯ãã¡ãŒã«ãã¹ãã ãã©ã«ããŒã«ãã£ã«ã¿ãªã³ã°ããããå®å šã«ãããã¯ããããããã®ã§ã¯ãªããåä¿¡è ã®åä¿¡ãã¬ã€ã«æ£åžžã«å°éããèœåãæããŸããéä¿¡è ã¬ãã¥ããŒã·ã§ã³ãèªèšŒãããã³ã«ãã³ã³ãã³ãå質ããªã¹ããã€ãžãŒã³ãªã©ãã¡ãŒã«ããã¯ã¹ãããã€ããŒãã¡ãã»ãŒãžãåãå ¥ãé©åã«é 眮ãããã©ãããç·åçã«æ±ºå®ããè€æ°ã®èŠçŽ ãå æ¬ããŸããé«ãå°éçã¯ã¡ãŒã«ããŒã±ãã£ã³ã°ã®æåã«äžå¯æ¬ ã§ãããªããªããããäœæããããã£ã³ããŒã³ãæå³ããåä¿¡è ã«å±ããªããã°å€±æããããã§ãã
ãã¡ã€ã³ã¬ãã¥ããŒã·ã§ã³ãšã¯ããã®ãã¡ã€ã³ããéä¿¡ãããã¡ãŒã«ã®éå»ã®åäœã«åºã¥ããŠãã¡ãŒã«ãããã€ããŒãéä¿¡ãã¡ã€ã³ã«å²ãåœãŠãã¹ã³ã¢ã§ããã¡ãŒã«ãããã€ããŒã倿Žãããšå€ããå¯èœæ§ã®ããIPã¬ãã¥ããŒã·ã§ã³ãšã¯ç°ãªãããã¡ã€ã³ã¬ãã¥ããŒã·ã§ã³ã¯ããªãã®ãã©ã³ãã«ã©ãã§ãä»ããŠããŸããã¡ãŒã«ãããã€ããŒãåä¿¡ç®±ãžã®é çœ®ãæ±ºå®ããããã«äœ¿çšããäž»èŠãªèŠçŽ ãšããŠããŸããŸãéèŠã«ãªã£ãŠããŸãã
ã¡ãŒã«ããŠã³ã¹åŠçãšã¯ãæå³ããåä¿¡è ã«å±ããªãã£ãã¡ãŒã«ã管çã察å¿ããããã»ã¹ã§ããããŠã³ã¹ã¡ãŒã«ã®æ€åºãçš®é¡å¥ïŒããŒãããŠã³ã¹ãŸãã¯ãœããããŠã³ã¹ïŒã®åé¡ãç¡å¹ãªã¢ãã¬ã¹ã®åé€ãªã©ã®é©åãªå¯Ÿå¿ãããã³å°æ¥ã®ããŠã³ã¹ãæžããããã®æŠç¥ã®å®æœãå«ãŸããŸãã广çãªããŠã³ã¹åŠçã¯ãéä¿¡è ã®è©å€ãšã¡ãŒã«å°éçãç¶æããããã«äžå¯æ¬ ã§ãã
ã¡ãŒã«å°éçã¯ãã¡ãŒã«ãã¹ãã ãã©ã«ããŒã«ãã£ã«ã¿ãªã³ã°ãããããISPã«ãã£ãŠãããã¯ãããããå®å šã«ããŠã³ã¹ããããããã®ã§ã¯ãªããåä¿¡è ã®åä¿¡ãã¬ã€ã«æ£åžžã«å°éãã床åããæž¬å®ããŸããéä¿¡è ã¬ãã¥ããŒã·ã§ã³ãã¡ãŒã«èªèšŒãããã³ã«ïŒSPFãDKIMãDMARCïŒãã³ã³ãã³ãå質ãéä¿¡ã€ã³ãã©ã¹ãã©ã¯ãã£ããªã¹ããã€ãžãŒã³ã®å®è·µãªã©ãè€éãªèŠçŽ ã®çžäºäœçšãå æ¬ããŠããŸããé«ãå°éçã¯ãã¡ãŒã«ããŒã±ãã£ã³ã°ã®ROIã顧客ã³ãã¥ãã±ãŒã·ã§ã³ãäž»èŠãªã¡ãŒã«ãããã€ããŒãšã®è¯å¥œãªéä¿¡è ã¬ãã¥ããŒã·ã§ã³ã®ç¶æã«äžå¯æ¬ ã§ãã
ã¡ãŒã«ç²ããšã¯ãéä¿¡è ããã®ã¡ãŒã«ãå€ãããããŸãã¯å šäœçã«ã¡ãŒã«ãåãåããããããšã§ãåä¿¡è ãå§åãããããèå³ã倱ã£ãããç ©ãããæãããããç¶æ ã§ãããã®å¿ççåå¿ã«ããã賌èªè ã¯ä»¥å䟡å€ããããšæã£ãŠããã¡ãŒã«ãç¡èŠãåé€ããŸãã¯é ä¿¡åæ¢ããããã«ãªããæçµçã«ãšã³ã²ãŒãžã¡ã³ãææšã®äœäžãšã¹ãã èŠæ ã®å¢å ãæããéä¿¡è ã®è©äŸ¡ãæãªãå¯èœæ§ããããŸãã
ã¡ãŒã«ã€ã³ãã©ã¹ãã©ã¯ãã£ãšã¯ãã¡ãŒã«ã®éä¿¡ãåä¿¡ãã«ãŒãã£ã³ã°ã管çãå¯èœã«ããå®å šãªæè¡åºç€ãæããŸããã¡ãŒã«ãµãŒããŒïŒSMTPãIMAPãPOP3ïŒãèªèšŒçš DNS ã¬ã³ãŒãïŒSPFãDKIMãDMARCïŒãIP ã¢ãã¬ã¹ãã¡ãŒã«ãµãŒãã¹ãããã€ããŒãã»ãã¥ãªãã£ãããã³ã«ãç£èŠã·ã¹ãã ãå«ãŸããŸããå ç¢ãªã¡ãŒã«ã€ã³ãã©ã¹ãã©ã¯ãã£ã¯ãã¡ãã»ãŒãžã®ç¢ºå®ãªé ä¿¡ãä¿èšŒããã¹ãã ããã£ãã·ã³ã°ããä¿è·ãã广çãªã¡ãŒã«ããŒã±ãã£ã³ã°ãšããžãã¹ã³ãã¥ãã±ãŒã·ã§ã³ã®ããã®éä¿¡è ã¬ãã¥ããŒã·ã§ã³ãç¶æããŸãã
ã¡ãŒã«ã¬ãŒãå¶éã¯ãã¡ãŒã«ãµãŒãã¹ãããã€ããŒãã¡ãŒã«ããã¯ã¹ãããã€ããŒãç¹å®ã®æéå ã«éåä¿¡ã§ããã¡ãŒã«ã®æ°ãå¶éããããã«äœ¿çšããå¶åŸ¡ã¡ã«ããºã ã§ãããã®æ £è¡ã¯ããµãŒããŒã®éè² è·ãé²ããã¹ãã ãæžãããéä¿¡è ãšåä¿¡è ã®äž¡æ¹ãæªçšããä¿è·ããã®ã«åœ¹ç«ã¡ãŸããã¡ãŒã«ããŒã±ã¿ãŒã«ãšã£ãŠãã¬ãŒãå¶éãçè§£ãå°éããããšã¯ãå°éçãç¶æããäžæçãªãããã¯ãæ°žä¹ çãªãã©ãã¯ãªã¹ãç»é²ãåé¿ããããã«äžå¯æ¬ ã§ãã
ã¡ãŒã«ã¹ããããªã³ã°ãšã¯ãé ä¿¡é床ã管çãéä¿¡è ã®è©å€ãä¿è·ããããã«ãã¡ãŒã«ã®éä¿¡é床ãå¶åŸ¡ããææ³ã§ããISPã®ã¹ãã ãã£ã«ã¿ãŒãã¬ãŒãå¶éã®ããªã¬ãŒãé¿ããããã1æéãŸãã¯1æ¥ãããã®éä¿¡æ°ãå¶éããŸããé©åãªã¹ããããªã³ã°ã«ãããéä¿¡IPã倧éã¡ãŒã«ãã¹ãã ã®çºä¿¡æºãšããŠãã©ã°ä»ããããããšãé²ããé«ãé ä¿¡çãç¶æã§ããŸãã
ã¡ãŒã«ãŠã©ãŒã ã¢ãããšã¯ãæ°èŠãŸãã¯äŒæ¢ç¶æ ã®ã¡ãŒã«ã¢ãã¬ã¹ããéä¿¡éãåŸã ã«å¢ãããŠãè¯å¥œãªéä¿¡è ã¬ãã¥ããŒã·ã§ã³ã確ç«ããããã»ã¹ã§ãããã®äœç³»çãªã¢ãããŒãã¯ãã¡ãŒã«ãããã€ããŒã«ããªããã¹ãããŒã§ã¯ãªãæ£åœãªéä¿¡è ã§ããããšã瀺ããŸããé©åãªãŠã©ãŒã ã¢ãããªãã«çªç¶å€§ééä¿¡ãè¡ããšãã¹ãã ãã£ã«ã¿ãŒãããªã¬ãŒãããã¡ã€ã³ã®ã¬ãã¥ããŒã·ã§ã³ãæãªãå¯èœæ§ããããŸãã
ãã£ãŒãããã¯ã«ãŒãïŒFBLïŒãšã¯ãåä¿¡è ãã¡ãŒã«ãè¿·æã¡ãŒã«ãšããŠããŒã¯ããéã«éä¿¡è ã«éç¥ããã¡ãŒã«ãããã€ããŒãæäŸãããµãŒãã¹ã§ãã賌èªè ãåä¿¡ç®±ã§ã¹ãã ãã¿ã³ãã¯ãªãã¯ãããšãã¡ãŒã«ãããã€ããŒã¯éä¿¡è ã«ã¬ããŒããéä¿¡ããéä¿¡è ã¯ãã®äººãã¡ãŒãªã³ã°ãªã¹ãããåé€ããèŠæ ãçºçããçç±ã調æ»ã§ããŸãã
ã°ã¬ã€ãªã¹ãã¯ãã¡ãŒã«ãµãŒããŒãæªç¥ã®éä¿¡è ããã®ã¡ãŒã«ãäžæçã«æåŠãããåŸã§å詊è¡ããŠãã ããããšããå¿çãè¿ãã¹ãã 察çæè¡ã§ãããã©ãã¯ãªã¹ããšã¯ç°ãªããã°ã¬ã€ãªã¹ãã¯éä¿¡ãµãŒããŒãé©åãªã¡ãŒã«ãããã³ã«ã«åŸã£ãŠãããã©ããããã¹ãããäžæçãªæªçœ®ã§ããæ£èŠã®ã¡ãŒã«ãµãŒããŒã¯é å»¶åŸã«é ä¿¡ãå詊è¡ããŸãããã¹ãããŒã¯éåžžãæ¬¡ã®ã¿ãŒã²ããã«ç§»è¡ããŸãã
ããŒãããŠã³ã¹ã¯ãç¡å¹ãªã¡ãŒã«ã¢ãã¬ã¹ãååšããªããã¡ã€ã³ããŸãã¯ãããã¯ãããåä¿¡è ãªã©ãæ°žç¶çãªçç±ã§ã¡ãŒã«ãé ä¿¡ã§ããªãå Žåã«çºçããæ°žç¶çãªã¡ãŒã«é 信倱æã§ããããŒãããŠã³ã¹ã¯ãªã¹ãããå³åº§ã«åé€ããå¿ èŠããããŸãã
åä¿¡ç®±å°éçïŒIPRïŒãšã¯ãéä¿¡ãããã¡ãŒã«ã®ãã¡ãè¿·æã¡ãŒã«ãã©ã«ããããã¢ãŒã·ã§ã³ã¿ãã«å ¥ã£ãããå®å šã«ãããã¯ããããããã®ã§ã¯ãªããåä¿¡è ã®ã¡ã€ã³åä¿¡ç®±ã«æ£åžžã«å±ããå²åã§ããã¡ãŒã«ãåä¿¡ãµãŒããŒã«åãå ¥ãããããã©ããã ããèšæž¬ããé ä¿¡çããããã¡ãŒã«å°éçãããæ£ç¢ºã«æž¬å®ã§ããææšã§ãã
IPã¬ãã¥ããŒã·ã§ã³ãšã¯ãã¡ãŒã«éä¿¡ã«äœ¿çšãããIPã¢ãã¬ã¹ã«å¯ŸããŠã¡ãŒã«ãããã€ããŒãå²ãåœãŠãã¹ã³ã¢ã§ãããã®ã¹ã³ã¢ã¯ããã®IPã¢ãã¬ã¹ã®éä¿¡å±¥æŽãšä¿¡é Œæ§ãåæ ããŠããŸããè¯å¥œãªIPã¬ãã¥ããŒã·ã§ã³ã¯ã¡ãŒã«ãåä¿¡ç®±ã«å±ãå¯èœæ§ãé«ããäœãã¬ãã¥ããŒã·ã§ã³ã¯ã¡ãŒã«ããããã¯ããããè¿·æã¡ãŒã«ãã©ã«ãã«æ¯ãåãããããããåå ãšãªããŸãã
IPãŠã©ãŒãã³ã°ã¯ãæéããããŠã¡ãŒã«éãäœç³»çã«å¢å ãããããšã§ãæ°ãããŸãã¯äŒæ¢äžã®IPã¢ãã¬ã¹ã«ããžãã£ããªéä¿¡ã¬ãã¥ããŒã·ã§ã³ã確ç«ããæ®µéçãªããã»ã¹ã§ãããã®å®è·µã¯ãã¡ãŒã«ãµãŒãã¹ãããã€ããŒïŒESPïŒãšåä¿¡ãã¬ã€ãããã€ããŒã«ãIPãã¹ãããŒã§ã¯ãªãæ£åœãªéä¿¡è ã§ããããšã瀺ããŸããé©åãªIPãŠã©ãŒãã³ã°ã¯ãæ°ããã¡ãŒã«ããã°ã©ã ã®éå§ãå°çšIPãžã®ç§»è¡ããŸãã¯é·æéã®éã¢ã¯ãã£ãåŸã®éä¿¡åéæã«äžå¯æ¬ ã§ãã
IPãŠã©ãŒã ã¢ããã¯ãã€ã³ã¿ãŒããããµãŒãã¹ãããã€ããŒïŒISPïŒãšããžãã£ããªéä¿¡è ã¬ãã¥ããŒã·ã§ã³ã確ç«ããããã«ãæ°ãããŸãã¯äŒæ¢äžã®IPã¢ãã¬ã¹ããã®ã¡ãŒã«éä¿¡ããªã¥ãŒã ãåŸã ã«å¢å ãããæŠç¥çãªããã»ã¹ã§ãããã®ãã¯ããã¯ã¯ãæåã«å°éã®ã¡ãŒã«ãéä¿¡ããæ°é±éãããŠæ®µéçã«ã¹ã±ãŒã«ã¢ããããããšã§ãã¡ãŒã«ããã¯ã¹ãããã€ããŒãIPãæœåšçãªã¹ãã ãœãŒã¹ãšããŠãã©ã°ãç«ãŠãã®ã§ã¯ãªããæ£åœãªãã®ãšããŠèªèã§ããããã«ããŸãã
ãªã¹ãã¯ãªãŒãã³ã°ãšã¯ãã¡ãŒã«ãªã¹ãã宿çã«ã¯ãªãŒãã³ã°ããã³ã¡ã³ããã³ã¹ããŠãç¡å¹ãéã¢ã¯ãã£ããåé¡ã®ããã¡ãŒã«ã¢ãã¬ã¹ãåé€ããå®è·µã§ããè¯å¥œãªãªã¹ãã¯ãªãŒãã³ã°ã¯ãã¡ãŒã«å°éçãåäžãããããŠã³ã¹çãäœäžãããéä¿¡è ã¬ãã¥ããŒã·ã§ã³ãä¿è·ããã¡ãŒã«ãåä¿¡ããã人ã«ã®ã¿éä¿¡ããããšãä¿èšŒããŸãã
ãã¹ããã¹ã¿ãŒãšã¯ãã¡ãŒã«ãã¡ã€ã³ã®ã¡ãŒã«ã·ã¹ãã éçšã管çãã責任ãè² ã管ççšã¡ãŒã«ã¢ã«ãŠã³ãã®ããšã§ãããã®ã¢ã«ãŠã³ãã¯ãããŠã³ã¹ã¡ãã»ãŒãžãé ä¿¡ãšã©ãŒãããã³äžæ£äœ¿çšã¬ããŒãã«é¢ããèªåéç¥ãåä¿¡ãããšåæã«ããããã¯ãªã¹ã管çãã¹ãã ãã£ã«ã¿ãŒèšå®ãã¡ãŒã«æšæºãžã®æºæ ãªã©ã®éèŠãªæ©èœãåŠçããŸããäž»èŠãªã¡ãŒã«ãããã€ããŒãæäŸãããã¹ããã¹ã¿ãŒããŒã«ã䜿çšãããšãéä¿¡è ã¯èªèº«ã®ã¬ãã¥ããŒã·ã§ã³ãç£èŠããå°éçã®åé¡ã蚺æã§ããŸãã
éä¿¡åŸ ã¡ã¡ãŒã«ïŒãã¥ãŒã«å ¥ããããã¡ãŒã«ïŒãšã¯ãäœæããéä¿¡åŠçã«åããããã®ã®ãéä¿¡ãããåã«äžæçã«ä¿çç¶æ ã«ãªã£ãŠããã¡ãã»ãŒãžã®ããšã§ããããã¯ãæ¥ç¶ã®åé¡ãã¬ãŒãå¶éããµãŒããŒè² è·ããŸãã¯ã¡ãŒã«ãããã€ããŒã®å¶éã«ãããã¡ãŒã«ãµãŒããŒãçŽã¡ã«ã¡ãã»ãŒãžãåŠçã§ããªãå Žåã«çºçããŸããæ ¹æ¬çãªåé¡ã解決ããããšãéä¿¡åŸ ã¡ã¡ãŒã«ã¯èªåçã«åŠçãããåä¿¡è ã«éä¿¡ãããŸãã
ã¬ãŒãå¶éïŒRate LimitingïŒãšã¯ããµãŒããŒãã¡ãŒã«ãããã€ããŒãç¹å®ã®æéå ã«ãŠãŒã¶ãŒãå®è¡ã§ãããªã¯ãšã¹ããã¢ã¯ã·ã§ã³ã®æ°ãå¶éããããã«äœ¿çšããæè¡ã§ããäžæ£å©çšãã¹ãã ãããã³ãµãŒãã¹æåŠïŒDoSïŒæ»æã«å¯Ÿããä¿è·ã¡ã«ããºã ãšããŠæ©èœãããšåæã«ããã¹ãŠã®ãŠãŒã¶ãŒéã§å ¬å¹³ãªãªãœãŒã¹å²ãåœãŠã確ä¿ããŸããã¡ãŒã«ããŒã±ãã£ã³ã°ã«ãããŠã¬ãŒãå¶éã¯ãå°éçãšéä¿¡è ã¬ãã¥ããŒã·ã§ã³ãç¶æããããã«1æéãŸãã¯1æ¥ãããã«éä¿¡ã§ããã¡ãŒã«æ°ã決å®ããŸãã
éä¿¡è ã¬ãã¥ããŒã·ã§ã³ã¯ãã¡ãŒã«ãµãŒãã¹ãããã€ããŒãéä¿¡IPã¢ãã¬ã¹ãšãã¡ã€ã³ã«å²ãåœãŠãã¹ã³ã¢ã§ãéå»ã®ã¡ãŒã«éä¿¡è¡åãšåä¿¡è ã®ãšã³ã²ãŒãžã¡ã³ããã¿ãŒã³ã«åºã¥ããŠããŸãããã®ã¹ã³ã¢ã¯ãã¡ãŒã«ãåä¿¡ãã¬ã€ã«å±ãããã¹ãã ã«ãã£ã«ã¿ãªã³ã°ãããããå®å šã«ãããã¯ãããããçŽæ¥æ±ºå®ããŸããGmailãMicrosoftãYahooãªã©ã®äž»èŠãªã¡ãŒã«ããã¯ã¹ãããã€ããŒã¯ãããŠã³ã¹çãã¹ãã èŠæ ãèªèšŒã¹ããŒã¿ã¹ã賌èªè ãšã³ã²ãŒãžã¡ã³ããªã©ã®èŠçŽ ãè©äŸ¡ããç¬èªã®ã¬ãã¥ããŒã·ã§ã³ã¹ã³ã¢ãªã³ã°ã·ã¹ãã ãç¶æããŠããŸãã
å ±æIPã¢ãã¬ã¹ãšã¯ãåãã¡ãŒã«ãµãŒãã¹ãããã€ããŒãéããŠè€æ°ã®éä¿¡è ãã¡ãŒã«ãé ä¿¡ããããã«äœ¿çšããIPã¢ãã¬ã¹ã®ããšã§ãããã®ä»çµã¿ã«ãããå°èŠæš¡ãªäŒæ¥ã¯å°çšIPãç¶æããã³ã¹ãããããããšãªãã¡ãŒã«ãéä¿¡ã§ããŸããããã®IPã䜿çšãããã¹ãŠã®éä¿¡è ã®è¡åãã¬ãã¥ããŒã·ã§ã³ã«å ±åã§åœ±é¿ãäžããããšãæå³ããŸããäžäººã®éä¿¡è ãã¹ãã ãéä¿¡ãããè³ªã®æªããªã¹ãã䜿çšããããããšããã®ã¬ãã¥ããŒã·ã§ã³ã®äœäžã¯åãIPãå ±æããä»ã®ãã¹ãŠã®éä¿¡è ã«åœ±é¿ããŸãã
ãœããããŠã³ã¹ã¯ãã¡ãŒã«ããã¯ã¹ã®å®¹éè¶ éããµãŒããŒã®ããŠã³ã¿ã€ã ããŸãã¯ã¡ãã»ãŒãžãµã€ãºå¶éãªã©ã®äžæçãªåé¡ã®ããã«ã¡ãŒã«ãé ä¿¡ã§ããªãå Žåã«çºçããäžæçãªã¡ãŒã«é 信倱æã§ãããœããããŠã³ã¹ã¯å詊è¡ã§æåããå¯èœæ§ããããŸãã
ã¹ãã ã¯ãåä¿¡è ã®åæãªãã«éä¿¡ãããè¿·æãªå€§éã¡ãŒã«ã¡ãã»ãŒãžãæããéåžžã¯åçšãè©æ¬ºããŸãã¯æªæã®ããç®çã§éä¿¡ãããŸããè¿·æã¡ãŒã«ãšãåŒã°ããã¹ãã ã¡ãŒã«ã¯å€§éã®åä¿¡è ãªã¹ãã«å€§éé ä¿¡ãããéã«ããåå¿ãæå€§åããããšãç®çãšããŠããŸãããããã®ã¡ãã»ãŒãžã¯ãæ£åœã§ã¯ãããæãŸããªãããŒã±ãã£ã³ã°ãããå人ãŠãŒã¶ãŒãšã¡ãŒã«ãšã³ã·ã¹ãã ã®äž¡æ¹ã®æŽåæ§ãè ãããã£ãã·ã³ã°ãè©æ¬ºãŸã§å€å²ã«ããããŸãã
ã¹ãããŒãšã¯ã賌èªãæ¿è«ŸïŒãªããã€ã³ïŒããŠããªãåä¿¡è ã«å¯ŸããŠãæªæ¿è«Ÿã®äžæéä¿¡ã¡ãŒã«ãéãã€ããå人ãŸãã¯å£äœã®ããšã§ããã¹ãããŒã¯éåžžãèªååãããããŒã«ãåéãããã¡ãŒã«ãªã¹ãã䜿çšããŠãç¡é¢ä¿ã欺ççããŸãã¯æªæã®ããã³ã³ãã³ãã倧éã®ã¡ãŒã«ã¢ãã¬ã¹ã«é åžããŸãã圌ãã®æŽ»åã¯CAN-SPAMãGDPRãªã©ã®ã¢ã³ãã¹ãã æ³ã«éåããŠãããäžèŠãªã¡ãã»ãŒãžãããŠãŒã¶ãŒãä¿è·ããããã«ã¡ãŒã«ãµãŒãã¹ãããã€ããŒã«ãã£ãŠé »ç¹ã«ãããã¯ãªã¹ãïŒãã©ãã¯ãªã¹ãïŒã«ç»é²ãããŸãã
é ä¿¡åæ¢ãªã¹ããšã¯ãçµç¹ããã¡ãŒã«ãåä¿¡ãã¹ãã§ãªãã¡ãŒã«ã¢ãã¬ã¹ã®ããŒã¿ããŒã¹ã§ããããŠã³ã¹ããã¢ãã¬ã¹ãé ä¿¡åæ¢ããã¢ãã¬ã¹ãã¹ãã èŠæ ãåºããã¢ãã¬ã¹ãæ³çãŸãã¯ã³ã³ãã©ã€ã¢ã³ã¹äžã®çç±ã§æåã§è¿œå ãããã¢ãã¬ã¹ãå«ãŸããŸããé©åãªé ä¿¡åæ¢ãªã¹ã管çã¯ãéä¿¡è ã¬ãã¥ããŒã·ã§ã³ã®ç¶æãšæ³çã³ã³ãã©ã€ã¢ã³ã¹ã«äžå¯æ¬ ã§ãã
ã¡ãŒã«ã®ã¹ããããªã³ã°ãšã¯ãé ä¿¡é床ãå¶åŸ¡ããåä¿¡ãµãŒããŒãžã®éè² è·ãé²ãããã«ãã¡ãŒã«ã®éä¿¡é床ãå¶éããæ £è¡ã®ããšã§ããããã¯ãéä¿¡è ãèªç€Ÿã®ã¬ãã¥ããŒã·ã§ã³ãä¿è·ããããã«å®è£ ããå Žåãããã°ãISPãã¡ãŒã«ãµãŒãã¹ãããã€ããŒãçä¿¡ã¡ãŒã«éã管çãã¹ãã ã鲿¢ããããã«åŒ·å¶çã«é©çšããå ŽåããããŸãã
ãã¯ã€ããªã¹ãã¯ãåä¿¡è ãŸãã¯ã¡ãŒã«ãµãŒãã¹ãããã€ããŒãä¿¡é Œã§ãå®å šã§ãããšæå®ããæ¿èªæžã¿ã¡ãŒã«éä¿¡è ã®ãªã¹ãã§ãããã¯ã€ããªã¹ãã«ç»é²ãããéä¿¡è ããã®ã¡ãŒã«ã¯ã¹ãã ãã£ã«ã¿ãŒããã€ãã¹ããçŽæ¥åä¿¡ãã¬ã€ã«é ä¿¡ããããããä¿¡é Œæ§ã®é«ãã³ãã¥ãã±ãŒã·ã§ã³ãä¿èšŒãããŸãããã¯ã€ããªã¹ãç»é²ã¯ãåã ã®åä¿¡è ã¬ãã«ãäŒæ¥ã¡ãŒã«ãµãŒããŒã¬ãã«ããŸãã¯ISPã¬ãã«ã§è¡ãããšãã§ããŸãã
EmailVerify ãä»ãã䜿çšããŠã99.9% ã®ç²ŸåºŠã§ã¡ãŒã«ãæ€èšŒããŸãããã