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Turning the homeless into 4G hot-spots
I wanted to quickly mention this really cool initiative. I read about it in the Barcelona newspaper La Vanguardia a few days ago, and now it seems it is reaching the US as well. The idea is to turn the...
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Keeping hackers out of implanted medical devices
Working in cybersecurity is fascinating and I am very happy with my job. However, when I talk about it, people tend to picture me like an old school computer hacker from the movies, trying to get into...
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Sayonara GSM
AT&T announced yesterday a plan to switch off its 2G network by 2017, which will allow them to reuse a big chunk of spectrum for LTE-based access networks. The US cellular provider stated that just...
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20 years since the first SMS ever
Yesterday was the 20th anniversary of the first SMS ever sent. Initially designed as a way to send messages for internal carrier operations, the first “personal” SMS message was sent on Dec. 3rd 1992...
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FCC’s smartphone security checker
Working in security for wireless and mobility networks I can tell you something that should not be new for most of you: smart-phones are the newest target for malware programmers and hackers. The FCC...
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The renaissance of wireless communications…
Recently I had the pleasure to meet Dr. Ted Rappaport and attend to a very interesting talk he gave at NYU Poly. The topic of the talk was his proposed “renaissance of wireless communications“. It was...
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The programable world (a.k.a the internet of things)
I recently read a very interesting and detailed article that a colleague at work recommended. The article presents a very thorough overview of the latest revolution in consumer electronics combined...
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Ambient backscatter
I recently read a very interesting paper that discusses one of the coolest wireless comm-related projects I have seen around for a while. A team of researchers from University of Washington presented...
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Complimentary tutorial on Advances in Coordinated Multi-Cell Multi-User MIMO...
Check this IEEE ComSoc tutorial on Advances in Coordinated Multi-Cell Multi-User MIMO Systems. Free of charge for a limited time. Advances in Coordinated Multi-Cell Multi-User MIMO Systems
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Doppler shift and the motivation behind the separation of pilot tones in LTE
I recently was contacted by someone with questions regarding a document I wrote (LTE PHY fundamentals) a few years ago as part of a class at Columbia University and that is hosted on my website. The...
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Radio jamming mitigation with beam-forming
(Yes, after months? maybe years? I decided to get back to being somehow active on my blog… Most likely I’ll just be posting about security and wireless/mobile interesting stuff) I was reading this...
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Symmetric key VS PKI in mobile networks
Authentication in mobile networks is executed leveraging a symmetric key system. For each mobile subscriber, there is a secret key that is known only by the mobile device and the network operator....
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LTE IMSI catchers
I was reading this morning a new paper on the topic of LTE IMSI catchers: https://arxiv.org/pdf/1702.04434.pdf Mjølsnes, Stig F., and Ruxandra F. Olimid. “Easy 4G/LTE IMSI Catchers for...
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Vulnerability and exploit released for remote code execution on smartphones
I was just reading the newest post by Google’s Project Zero. They just released a report on a massive bug that allows remote code execution by exploiting a vulnerability on the 802.11 Broadcom SoC used...
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More LTE exploits presented at Blackhat 2017
As I predicted in an article I wrote last year, the increasingly maturity of the open-source implementations of the LTE stack is fueling more and more exciting work in LTE security. I saw two...
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Using open-source software and SDRs to test LTE protocol-aware jamming
Ever since back in 2010 I started investigating what would happen if a radio adversary jammed specific LTE signaling channels – as opposed to barrage jamming of the entire LTE signal -, I have been...
View ArticleMobile network security research overview paper
Earlier this week, Google Scholar highlighted for me a new paper on mobile security. I am familiar with the work of a couple of the authors, so I downloaded it and read the whole thing. It turns out it...
View ArticleRunning a USRP B210 from within a Linux VM
I was setting up today my new Windows7 laptop. And, as every single Windows laptop I’ve had before, I set up a Linux VM on it. Although on my other laptop I run a paid VMWare Workstation Pro license,...
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Sniffing BLE with the new Nordic sniffer
Although for deep security analysis and experiments I do all Bluetooth and BLE things using either an Ubertooth One or my USRP (either B210 or B205mini **) and gr-bluetooth, I always start any...
View ArticleAnother example of why it is never a good idea to make a product with high...
I often find myself wondering “what could possibly go wrong?” sarcastically when I read about hotel doors that can be unlocked via BLE with an app and all other sorts of products with BLE connectivity....
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