Jonathan Mayer is a Ph.D. candidate in computer science at Stanford University, where he received his J.D. in 2013. He was named one of the Forbes 30 Under 30 in 2014, for his work on technology security and privacy. Jonathan's research and commentary frequently appears in national publications, and he has contributed to federal and state law enforcement actions.
Jonathan is a Cybersecurity Fellow at the Center for International Security and Cooperation, a Junior Affiliate Scholar at the Center for Internet and Society, and a Stanford Interdisciplinary Graduate Fellow. He earned his A.B. at Princeton University in 2009, concentrating in the Woodrow Wilson School of Public and International Affairs. Jonathan has consulted for both federal and state law enforcement agencies, and his research on consumer privacy has contributed to multiple regulatory interventions. A proud Chicago native, Jonathan is undaunted by freezing weather and enjoys celery salt on a hot dog.
Co-authored with Patrick Mutchler. This is a project of the Stanford Security Lab.
Just over a month ago we launched MetaPhone, an Android app for crowdsourcing phone metadata. Our results have already confirmed that phone activity easily reveals private relationships, is deeply interconnected, and can trivially be identified.
We’ve received lots of great feedback on the study from researchers and participants. One request has been especially consistent: show me my metadata!
Starting today, the MetaPhone app will provide personalized results about your phone metadata privacy. Read more » about Spy on Your Metadata
Co-authored with Patrick Mutchler. This is a project of the Stanford Security Lab.
We’re studying the National Security Agency, and we need your help.
Our recent research on Google’s circumvention of the Safari cookie blocking feature has led to some confusion, in part owing to the company’s statement in response (reproduced in its entiretybelow). This post is an attempt to elucidate the central issues. As with the original writeup, I aim for a neutral viewpoint in the interest of establishing a common factual understanding. Read more » about Setting the Record Straight on Google’s Safari Tracking
Apple’s Safari web browser is configured to block third-party cookies by default. We identified four advertising companies that unexpectedly place trackable cookies in Safari. Google and Vibrant Media intentionally circumvent Safari’s privacy feature. Media Innovation Group and PointRoll serve scripts that appear to be derived from circumvention example code. Read more » about Safari Trackers
Yesterday the Digital Advertising Alliance (DAA) announced a supplementary set of self-regulatory principles for third parties on the web (pdf, press release). This post is a brief — and far from comprehensive — overview of improvements, continued deficiencies, and procedural issues. Read more » about A Brief Overview of the Supplementary DAA Principles
By Jonathan Mayer and Edward W. Felten
Special to The Bee
Cross-posted from The New York Times Opinion Pages.
To the Editor:
By Edward Felten and Jonathan Mayer
Snooping on the Internet is tricky. The network is diffuse, global, and packed with potential targets. There’s no central system for identifying or locating individuals, so it’s hard to keep track of who is online and what they’re up to. What’s a spy agency to do? Read more » about How the NSA Piggy-Backs on Third-Party Trackers
John Mitchell and I have written a new paper that synthesizes research on policy and technology issues surrounding third-party web tracking. It will appear at the IEEE Symposium on Security and Privacy in May. Read more » about Third-Party Web Tracking: Policy and Technology
"“With a cellphone, the I.P. address might get you a city or part of a city,” said Jonathan Mayer, a computer scientist and lawyer at Stanford University. “But, if you are using a landline address, that could in fact be incredibly precise — to an exact address or part of a building, depending on how it is configured.” Read more » about Uber Data Collection Changes Should Be Barred, Privacy Group Urges
"Cybersecurity experts also note that this legislation would do little, if anything, to thwart data breaches. "I'm not aware of a single computer security researcher or practitioner who has…gotten up and said this sort of information sharing will meaningfully reduce the likelihood of attack or the severity of breaches or any of the sorts of things you'd want to address," says Jonathan Mayer, a computer scientist and scholar at the Center for Internet and Society at Stanford University." Read more » about Congress' Fix for Cyberattacks May Hand the Government More of Your Data
"The N.S.A.’s activities run “smack into law enforcement land,” said Jonathan Mayer, a cybersecurity scholar at Stanford Law School who has researched privacy issues and who reviewed several of the documents. “That’s a major policy decision about how to structure cybersecurity in the U.S. and not a conversation that has been had in public.”" Read more » about Hunting for Hackers, N.S.A. Secretly Expands Internet Spying at U.S. Border
"Unfortunately, consumers don't have a lot of options for evaluating the security of dating services, according to Jonathan Mayer, a computer scientist and lawyer affiliated with Stanford's Center for Internet and Society. And the explosion of services in the market means that start-ups may not be putting users' privacy first.
"Young apps often don't prioritize security and privacy," he said. "Growth is everything in the start-up space -- and that can come at users' expense." Read more » about Online dating is more normal than ever. But it also comes with new risks.
""With this acquisition, Verizon appears to be tearing down the wall between telecommunications and personalized advertising," said Jonathan Mayer, a computer researcher at Stanford University. "The FCC might have something to say about that."
Mayer argued that telecom companies like Verizon are "in a privileged and trusted position" because they have such sweeping access to sensitive information flowing over their networks, and it's often difficult for consumers to switch to competitors. " Read more » about Verizon's AOL Deal Could Lead to New Privacy Problems
Because of Edward Snowden’s remarkable public service, we know that the National Security Agency, with the cooperation of some large firms, has amassed an unprecedented database of personal information. The ostensible goal in collecting that information is to protect national security. The effect, according to Reed Hundt, is to undermine democracy. Read more » about Saving Privacy
This talk presents an empirical assessment of the NSA’s legal restrictions, including research cited by President Obama’s intelligence review group. We find that present limits on bulk surveillance programs come up far short; authorities to intercept international Internet traffic and domestic telephone metadata place ordinary Americans at risk. Read more » about The Science of Surveillance
Solutions to many pressing economic and societal challenges lie in better understanding data. New tools for analyzing disparate information sets, called Big Data, have revolutionized our ability to find signals amongst the noise. Big Data techniques hold promise for breakthroughs ranging from better health care, a cleaner environment, safer cities, and more effective marketing. Yet, privacy advocates are concerned that the same advances will upend the power relationships between government, business and individuals, and lead to prosecutorial abuse, racial or other profiling, discrimination, redlining, overcriminalization, and other restricted freedoms. Read more » about Big Data and Privacy: Making Ends Meet
Have you ever borrowed a smartphone without asking? Modified a URL? Scraped a website? Called an undocumented API? Congratulations: you might have violated federal law! A 1986 statute, the Computer Fraud and Abuse Act (CFAA), provides both civil and criminal remedies for mere "unauthorized" access to a computer. Read more » about Innovation or Exploitation?
Hosted by the Stanford Center for E-Commerce.
5:30 pm - 6:30 pm: Registration/Reception (Manning Faculty Lounge, second floor breezeway fo Stanford Law School) Read more » about Behavioral Advertising and Privacy Law Reboot - US and International Legal Trends and Best Practices for Internet, Cloud and E-Commerce Companies
"WELNA: It could indeed. Hackers, by definition, are trying to break into other people's computer accounts and steal their information, so monitoring their activity means watching them poach on other people's Internet usage and private data. I talked with Jonathan Mayer, a computer security fellow at Stanford who's reviewed these latest Snowden documents. He says because of the way the surveillance law is written, the NSA can actually hang on to that hacked information. Read more » about New Snowden Documents Reveal Government Collection Of Online Data
CIS Affiliate Scholar David Levine interviews Jonathan Mayer, Stanford Ph.D. candidate in computer science, author of Terms of Abuse: An Empirical Assessment of the Federal Hacking Law, and How to Fix It. Read more » about Jonathan Mayer - Hearsay Culture Show #231 - KZSU-FM
Listen to the full piece at Marketplace.org.
"Now Neustar might lose the contract to Ericsson, which is based in Sweden. Neustar says this would be bad for national security, said Jonathan Mayer, a fellow at Stanford's Center for International Security and Cooperation.
“It certainly is a legitimate concern that the company that routes calls is in position to know a fair amount about law enforcement and intelligence investigations,” Mayer said." Read more » about The battle over which company has your number
View the CBS News Broadcast here.
"Stanford University Ph.D. student Jonathan Mayer and his research partner created an Android app called MetaPhone that asked users to volunteer their phone records in an effort to learn what could be uncovered from metadata. More than 500 people signed up. Read more » about Just how much personal information does phone metadata reveal?