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  2. Personal unblocking key - Wikipedia

    en.wikipedia.org/wiki/Personal_unblocking_key

    A personal unblocking key ( PUK ), sometimes called personal unblocking code ( PUC ), is used in SIM cards to reset a personal identification number (PIN) that has been lost or forgotten. Most mobile phones offer the feature of PIN protection. After switching on the phone, if the PIN security function is active, the user is required to enter a ...

  3. SIM swap scam - Wikipedia

    en.wikipedia.org/wiki/SIM_swap_scam

    SIM swap scam. A SIM swap scam (also known as port-out scam, SIM splitting, [1] simjacking, and SIM swapping) [2] is a type of account takeover fraud that generally targets a weakness in two-factor authentication and two-step verification in which the second factor or step is a text message (SMS) or call placed to a mobile telephone.

  4. Mobile network codes in ITU region 3xx (North America)

    en.wikipedia.org/wiki/Mobile_network_codes_in...

    This list contains the mobile country codes and mobile network codes for networks with country codes between 300 and 399, inclusively – a region that covers North America and the Caribbean. Guam and the Northern Mariana Islands are included in this region as parts of the United States.

  5. Mystery solved: $400M FTX hack carried out by SIM-swap gang ...

    www.aol.com/finance/mystery-solved-400m-ftx-hack...

    The first big clue to who pulled off the FTX hack came on Jan. 30 when Ars Technica got its hands on a document laying out charges against three U.S. individuals who had engaged in SIM-swapping to ...

  6. Unstructured Supplementary Service Data - Wikipedia

    en.wikipedia.org/wiki/Unstructured_Supplementary...

    Unstructured Supplementary Service Data ( USSD ), sometimes referred to as " quick codes " or " feature codes ", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator 's computers. USSD can be used for WAP browsing, prepaid callback service, mobile-money services, location-based content ...

  7. Simjacker - Wikipedia

    en.wikipedia.org/wiki/Simjacker

    Simjacker is a cellular software exploit for SIM Cards discovered by AdaptiveMobile Security. 29 countries are vulnerable according to ZDNet. The vulnerability has been exploited primarily in Mexico, but also Colombia and Peru, according to the Wall Street Journal, where it was used to track the location of mobile phone users without their knowledge.

  8. SIM lock - Wikipedia

    en.wikipedia.org/wiki/SIM_lock

    A SIM lock, simlock, network lock, carrier lock or ( master) subsidy lock is a technical restriction built into GSM and CDMA [ 1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks. This is in contrast to a phone (retrospectively called SIM-free or ...

  9. List of security hacking incidents - Wikipedia

    en.wikipedia.org/wiki/List_of_security_hacking...

    The hack was conducted in order to support the 2019 Hong Kong protests, amidst the Hong Kong police's siege of the city's Polytechnic University. They also brought up a possible peace plan first proposed by a professor at Inha University in hopes of having the Korean reunification and the five key demands of the Hong Kong protest being ...