A Quick and Dirty Guide to Cell Phone Surveillance at Protests

As uprisings over police brutality and institutionalized racism have swept over the country, many people are facing the full might of law enforcement weaponry and surveillance for the first time. Whenever protesters, cell phones, and police are in the same place, protesters should worry about cell phone surveillance.

Often, security practitioners or other protesters respond to that worry with advice about the use of cell-site simulators (also known as a CSS, IMSI catcher, Stingray, Dirtbox, Hailstorm, fake base station, or Crossbow) by local law enforcement. But often this advice is misguided or rooted in a fundamental lack of understanding of what a cell-site simulator is, what it does, and how often they are used.

The bottom line is this:
there is very little concrete evidence of cell site simulators being used against protesters in the U.S. The threat of cell site simulators should not stop activists from voicing their dissent or using their phones. On the other hand, given that more than 85 local, state, and federal law enforcement agencies around the country have some type of CSS (some of which are used hundreds of times per year), it’s not unreasonable to include cell site simulators in your security plan if you are going to a protest and take some simple steps to protect yourself.

💡 Surveillance Self-Defense - Your Security Plan:
https://ssd.eff.org/en/module/your-security-plan

👉🏼 Read more:
https://www.eff.org/deeplinks/2020/06/quick-and-dirty-guide-cell-phone-surveillance-protests

#surveillance #police #usa #defence #phone #CSS #SecurityPlan
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Stealing Data With CSS: Attack and Defense

Summary: A method is detailed - dubbed CSS Exfil - which can be used to steal targeted data using Cascading Style Sheets (CSS) as an attack vector. Due to the modern web's heavy reliance on CSS, a wide variety of data is potentially at risk, including: usernames, passwords, and sensitive data such as date of birth, social security numbers, and credit card numbers. The technique can also be used to de-anonymize users on dark nets like Tor. Defense methods are discussed for both website operators as well as web users, and a pair of browser extensions are offered which guard against this class of attack.

👀 👉🏼 Want to check if you are vulnerable?
https://www.mike-gualtieri.com/css-exfil-vulnerability-tester

💡 👉🏼 Want to protect yourself?

👉🏼 Install the Chrome plugin:
https://chrome.google.com/webstore/detail/css-exfil-protection/ibeemfhcbbikonfajhamlkdgedmekifo

👉🏼 Install the Firefox plugin:
https://addons.mozilla.org/en-US/firefox/addon/css-exfil-protection

👀 👉🏼 Methods of Exploitation and Proof of Concept
https://www.mike-gualtieri.com/posts/stealing-data-with-css-attack-and-defense

#css #attack #defense #exploitation #vulnerability
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