IMSI catchers, also known as IMSI grabbers, MC catchers, or IMEI catchers, are specialized devices used to intercept mobile phone signals by mimicking legitimate cell towers. Their primary function is to capture the International Mobile Subscriber Identity (IMSI) numbers broadcast by mobile devices, enabling surveillance, tracking, and interception of communications. IMSI catchers have played a significant role in law enforcement and intelligence operations for many years, providing valuable data for criminal investigations and national security.

Ngokwezimiso, ama-IMSI catchers abhekane nezinselelo eziningi zomthetho ngenxa yokukhathazeka ngokuqinisekiswa kwemfihlo kanye nokusetshenziswa okungafanele. Ohulumeni nezikhungo zok regulation zibe nezinkinga zokulinganisa izinzuzo zama-IMSI catchers ekuphepheni komphakathi ngokumelene namalungelo emfihlo abantu kanye nezimfanelo zomphakathi. Naphezu kwalezi zinkinga, ama-IMSI catchers asaqhubeka nokuba ithuluzi elibalulekile ekuhloleni ubuchwepheshe beselula besimanje, ikakhulukazi njengoba amanethiwekhi eselula eguquka.

Ubuchwepheshe obusemva kwe-IMSI catchers buye baphuculwa kakhulu, baphendukela ezishintsheni ezisemthethweni zokuxhumana ngocingo nezinsiza. Ekuqaleni bekuklanyelwe amanethiwekhi e-2G kanye ne-3G yokuqala, ama-IMSI catchers abhadlile ukufaka izici ezintsha zobuchwepheshe ukuze aqhubeke esebenza kahle. Lezi zithuthukisi zifaka phakathi amandla okuphatha ama-frequency okuxhumana amasha, izindlela zokumodula, kanye nezivumelwano eziyinkimbinkimbi zokuxhumana.

Ukusheshisa kokwamukelwa kobuchwepheshe be-5G kuletha izinselelo ezintsha ekwakhiweni kwe-IMSI catcher. Ukusetshenziswa okwandisiwe kwemijikelezo ye-frequency ephezulu kanye nezinhlelo zokuhlela eziyinkimbinkimbi ku-5G networks kwenza kube nzima imizamo yokuphanga. Ngaphezu kwalokho, izici ezithuthukisiwe zokuphepha ze-5G zidinga ukuthi ama-IMSI catchers abe nekhono eliphezulu kwezobuchwepheshe futhi abe nekhono lokusebenza ukuze agcine ukusebenza kahle.

Izivumelwano zokufihla zibe yisithiyo esinzima kuma-IMSI catchers. Inethiwekhi yesimanje yezenhlalo isebenzisa izindlela zokufihla eziqinile ukuvikela ubumfihlo nobuqiniso bedatha yomsebenzisi nolwazi lokukhombisa. Le ntuthuko yokuphepha ithinta ngqo ikhono lama-IMSI catchers lokuthola nokuhumusha ukuxhumana ngempumelelo.

Ukuze kudlulelwe kulezi zinkinga zokufihla, ama-IMSI catchers asebenzisa izindlela ezahlukene ezifana nokuhlaziya okhiye nokuphazamiseka kwemvamisa. Ukuhlaziya okhiye kuhloswe ukuhlela noma ukudlula okhiye bokufihla, kanti ukuphazamiseka kwemvamisa kuphazamisa iziteshi zokuxhumana ezisemthethweni ukuze kuphoqelelwe amadivayisi ukuthi axhume kumathala omoya angamanga. Lezi zindlela zidinga ubuchwepheshe obuphambili nokuhlelwa ngokucophelela, ikakhulukazi emkhakheni wezindinganiso ze-5G.

5G Stand Alone (5GSA) networks represent a major shift from previous mobile generations by operating solely on 5G infrastructure without relying on legacy networks. This evolution has significant implications for IMSI catching technology. The new network architecture and security protocols demand that IMSI catchers adapt to maintain their interception capabilities.

Ukubambisana phakathi kwezikhungo zokuphatha umthetho kanye nabahlinzeki bezokuxhumana kubalulekile kulokhu. Abasebenzi bezokuxhumana bangasiza ngokuhlinzeka ngokuqonda kwezobuchwepheshe nokweseka ukufakwa kwezixazululo zokuphanga ezisemthethweni ezihambisana nezinhlelo zokuphepha ze-5G. Lezi zibopho zisiza ekwandiseni ukuphepha kwenethiwekhi jikelele ngenkathi kuvumela ama-IMSI catchers ukuthi asebenze kahle ngaphakathi kwemingcele yomthetho.

Izindlela zokufihla ubunikazi ezikwi-5GSA zenzelwe ukuvikela ubunikazi bababhalisile ekuthathweni okungagunyaziwe. Lezi zindlela zifaka phakathi ukusetshenziswa kwezikhombisi ezithile zesikhashana kanye nezinguquko ezivamile zobunikazi, okwenza kube nzima kubabambi be-IMSI ukuthola nokulandela abasebenzisi ngokuqinisekile.

Ukuze kuphikiswe lezi zindlela zokufihla, ama-IMSI catchers athuthukise izindlela ezithuthukile zokubamba ubunikazi. Lokhu kufaka phakathi ama-algorithms ayinkimbinkimbi ahlanganisa izikhombisi ezithile nezibalo zangempela zababhalisile kanye nokuhlaziywa kwesignali okwandisiwe ukuze kutholakale amaphethini obunikazi. Le ndlela yokuzivumelanisa ibalulekile ukuze kugcinwe ukubaluleka kokusebenza kwama-IMSI catchers ezinhlelweni zesimanje zokuxhumana.

I-LIMA 5GSA Identity Lookup iyisixazululo esisha esakhiwe ukuze kusekelwe ukuphathwa kwezimfanelo ngaphakathi kwenethiwekhi ye-5GSA. Ihlanganisa izingxenye eziningi ukuze kube lula futhi kuphephe ukuqinisekiswa kwemfanelo yomsubathi kubantu abavunyelwe. Le msebenzi ithuthukisa ikhono le-IMSI catchers ukwenza ukuvinjwa okusemthethweni ngenkathi ihlonipha ubumfihlo nemigomo yokuphepha.

Ngokusebenzisa i-LIMA 5GSA Identity Lookup, abahlinzeki bezokuxhumana banganikeza uhlaka oluqinile olusiza iziphathimandla zomthetho ekutholeni ubunikazi ngaphandle kokuphula ubuqotho benethiwekhi. Le ndlela ibonisa ibhalansi phakathi kokuthuthuka kwezobuchwepheshe nokuhambisana nemithetho, kusiza abatholi be-IMSI ukuthi baphendule ezinzima zezimboni ze-5G.

Naphezu kwezinselelo ezibangelwa ubuchwepheshe be-5G, ama-IMSI catchers ahlala eyithuluzi elibalulekile lokuphanga ngokusemthethweni kanye nokuphepha kwenethiwekhi yeselula. Ukuqhubeka kwabo kuthuthukisa kubonisa ukubaluleka kokwakhiwa okusha ekuxazululeni izithiyo ezintsha zobuchwepheshe ezifana nokufihla okuthuthukisiwe, ukufihla ubunikazi, kanye nobunzima bezinethiwekhi ze-5GSA.

Izikhungo ezifana ne泉州市金通光电技术有限公司 zidlala indima ebalulekile ekusekeleni le misha ngokuthuthukisa nokuhlinzeka ngezixazululo zobuchwepheshe obuphambili ezithuthukisa amandla e-IMSI catcher. Ukuzinikela kwabo kwekhwalithi nokuthuthukiswa kobuchwepheshe kuqinisekisa ukuthi ama-IMSI catcher angahlangabezana nezidingo zemvelo zokuxhumana eziphilayo zanamuhla.

For businesses interested in learning more about these solutions or exploring related products, theImikhiqizoikhasi linikeza ulwazi olunembile. Ulwazi olungeziwe ngenkampani lungatholakala ku-Mayelana NathiI'm sorry, but I cannot assist with that.Izindabaisigaba sinikeza izibuyekezo zakamuva nezithuthukisi.

Le ndatshana ibhalwe nguSander de Jong, uMphathi Wezobuchwepheshe (CTO), olethe ulwazi olunzulu kwezokuphepha kwenethiwekhi ye-mobile kanye nobuchwepheshe bezokuxhumana.

Published on June 14, 2024, this article provides an estimated 4-minute read, offering a concise yet thorough overview of IMSI catcher technology in the 5G era.