The Privacy BlogPrivacy, Security, Cryptography, and Anonymity

TAG | cellular

When you think your phone is connected to your wireless provider, you might actually be connected to a rogue tower set up to capture your data. Such devices have been demonstrated at the Black Hat security conference and a law enforcement fake tower called “Stingray” has been known for some time. Recently sophisticated secure phones […]

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In a unanimous decision, the Supreme Court ruled that police must obtain a warrant before searching suspect’s cellphone. Before this, cellphones were treated just like anything else a suspect might carry, including wallet, keys, address book, or various other “pocket litter”. Police are generally allowed to search suspects for weapons and to prevent the distraction […]

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The city of Chicago is getting ready to deploy several monitoring stations on light poles along Michigan Avenue. In addition to collecting environmental information like sound volume, light intensity, and air quality, the devices will also count people by detecting wireless signals from passing mobile devices. The system is designed to only count devices without […]

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A federal appeals court in Atlanta ruled that there is an expectation of privacy in cell tower location information, and therefor it is protected by the Fourth Amendment. This runs counter to other recent rulings that allow access to the information without a warrant under the Stored Communications Act. The recent ruling relies on precedent […]

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OS News has an interesting article: The second operating system hiding in every mobile phone It discusses the security implications of the fact that all cell phones run two operating systems. One is the OS that you see and interact with: Android, iOS, Windows Phone, BlackBerry, etc. The other is the OS running on the baseband […]

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Tech companies respond to reports of NSA tracking switched-off mobile phones | Privacy International Based on a single line in a Washington Post article, Privacy International has been investigating whether it is possible to track cell phones when they have been turned off. Three of the 8 companies they contacted have responded. In general they […]

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ArsTechnica has a nice article on a recent ruling by the US Fifth Circuit court of appeals. In this 2-1 decision, the court ruled that cellular location information is not covered by the fourth amendment, and does not require a warrant. The logic behind this ruling is that the information is part of business records […]

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The ACLU just posted an article about a recent federal magistrate judge’s ruling. It is a somewhat bizarre case. The DEA had an arrest warrant for a doctor suspected selling prescription pain killer drugs for cash. They then requested a court order to obtain his real time location information from his cell provider. The judge went […]

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This Blog has an interesting article and link to the website of a german newspaper article (translated here). The story is about a german politician Malte Spitz who sued to obtain the retained cell tower records for his own phone, then provided them to the newspaper. The newspaper has created a nice map and timeline tool […]

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