With the popularization of high technology, theft methods are gradually upgraded. Recently, the Florham Park police in New Jersey found that some burglary gangs began to use Wifi jammers to destroy home security systems and prevent victims from calling 911. The complexity of the crime has attracted widespread attention from residents and law enforcement agencies.

Case details: How do Wi-Fi jammers work?

　　According to the police, a resident found that his security camera suddenly stopped working when he was at his home on Lincoln Avenue. At the same time, his mobile phone signal was also interfered and he could not call 911 for help. Robert Siciliano, CEO of Protect Now LLC, said in an interview: "Wi-Fi signal jammers work in a similar way to cell phone jammers. They can make home security systems ineffective."

　　Police analysis said that thieves may weaken the functions of cameras and alarm systems by blocking Wi-Fi signals to avoid being monitored and recorded. Mobile phone signals may also be affected, hindering residents from calling for help, making it difficult for them to seek help in time.

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High-tech criminal methods of South American theft groups

　　The New Jersey police issued a warning on its Facebook account, saying that the criminal methods of this burglary case showed that the suspect may be a member of the "South American Theft Group". The police said that the group has frequently committed crimes in many places in the United States in the past few years, and completed the burglary by using high-tech tools such as Wi-Fi jammers to evade monitoring equipment. This news has aroused public concern about home safety and has also prompted the police to step up their investigation into the organization.

　　Siciliano pointed out: "Criminals usually buy these jammers on the Internet. Although such devices are illegal in most states, they are relatively easy to buy." He called on consumers to be vigilant and not to buy and use Wi-Fi jammers at will to avoid breaking the law.

Countermeasures recommended by the police and security experts

　　In response to this new type of theft method, the Florham Park police recommend that residents upgrade their home security systems, especially install wired security devices, because they do not rely on Wi-Fi signals and can effectively resist signal interference. At the same time, using a multi-layer protection system can also reduce the impact of jammers, such as choosing a dual alarm system and data encryption to deal with criminals' signal interference methods.