Mobile Battery Tracks You Online

A little-known web standard that lets site owners tell how much battery life a mobile device has left has been found to enable tracking online, a year after privacy researchers warned that it had the potential to do just that.

The battery status API was introduced in HTML5, the fifth version of the code used to lay out the majority of the web, and had already shipped in Firefox, Opera and Chrome by August 2015. It allows site owners to see the percentage of battery life left in a device, as well as the time it will take to discharge or the time it will take to charge, if connected to a power source.

Intended to allow site owners to serve low-power versions of sites and web apps to users with little battery capacity left, soon after it was introduced, privacy researchers pointed out that it could also be used to spy on users. The combination of battery life as a percentage and battery life in seconds provides offers 14m combinations, providing a pseudo-unique identifier for each device.

Suppose a user loaded their church website in their version of Firefox, and then opened up the website for a satanic cult using a Chrome browser in private browsing mode piped through a secure VPN. Ordinarily, the two connections should be very difficult to associate with one another, but an advert that was loaded on both pages at once would be able to tell that the two devices were almost certainly the same, with the certainty increasing the longer they stayed connected.

Now, two security researchers from Princeton University have shown that the battery status indicator really is being used in the wild to track users. By running a specially modified browser, Steve Engelhard and Arvind Narayanan found two tracking scripts that used the API to “fingerprint” a specific device, allowing them to continuously identify it across multiple contexts.

The research was highlighted by Lukasz Olejnik, one of the four researchers who first called attention to the potential issues with the battery status API in 2015. Although Olejnik achieved some success following his warning, with the body in charge of the web’s standards thanking his group for the privacy analysis, the API still has the potential for misuse. And while it is only tracking scripts using it now, Olejnik warns that unscrupulous actors could do more.

“Some companies may be analysing the possibility of monetising the access to battery levels,” he writes. “When battery is running low, people might be prone to some – otherwise different – decisions. In such circumstances, users will agree to pay more for a service.”

Guardian

« Brexit Leading To Rising Tide Of Cyber Scams
Insider Trading: Ukrainian Hackers Accomplice Pleads Guilty »

CyberSecurity Jobsite
Perimeter 81

Directory of Suppliers

MIRACL

MIRACL

MIRACL provides the world’s only single step Multi-Factor Authentication (MFA) which can replace passwords on 100% of mobiles, desktops or even Smart TVs.

Alvacomm

Alvacomm

Alvacomm offers holistic VIP cybersecurity services, providing comprehensive protection against cyber threats. Our solutions include risk assessment, threat detection, incident response.

BackupVault

BackupVault

BackupVault is a leading provider of automatic cloud backup and critical data protection against ransomware, insider attacks and hackers for businesses and organisations worldwide.

CYRIN

CYRIN

CYRIN® Cyber Range. Real Tools, Real Attacks, Real Scenarios. See why leading educational institutions and companies in the U.S. have begun to adopt the CYRIN® system.

Syxsense

Syxsense

Syxsense brings together endpoint management and security for greater efficiency and collaboration between IT management and security teams.

Radiant Logic

Radiant Logic

Radiant Logic is a market-leading provider of federated identity solutions based on virtualization, and delivers simple, logical, and standards-based access to all identities within an organization.

Cloud53

Cloud53

Cloud53 specialise in improving operational IT through strategic use of Cloud technologies and services.

Government Communications Headquarters (GCHQ)

Government Communications Headquarters (GCHQ)

GCHQ defends Government systems from cyber threat, provide support to the Armed Forces and strive to keep the public safe, in real life and online.

Genie Networks

Genie Networks

Genie Networks is a leading technology company providing networking and security solutions for optimizing the performance of large networks.

Lares Consulting

Lares Consulting

Lares is a security consulting firm that helps companies secure electronic, physical, intellectual, and financial assets through a unique blend of assessment, testing and coaching.

Westermo Network Technologies

Westermo Network Technologies

Westermo designs and manufactures robust, resilient and secure data communications products for mission-critical industrial systems.

NXO France

NXO France

NXO is an independent leader in the integration and management of digital workflows with services covering digital infrastructures, communications & collaboration, and security.

BLOCKO

BLOCKO

BLOCKO is a blockchain specialized technology company that has experienced and achieved the largest amount of business in South Korea.

Global EPIC

Global EPIC

Global EPIC is an international cybersecurity initiative designed to combat growing world challenges by facilitating global collaboration in the field of cyber security.

Fairfirst Insurance

Fairfirst Insurance

Fairfirst Cyber Insurance protects your business assets against the complexity of cyber threats.

AUREA Technology

AUREA Technology

The photon counter SPD_OEM_NIR from AUREA Technology is designed for quantum key distribution at telecom wavelengths.

Diaplous Group

Diaplous Group

Diaplous Group is a leading Maritime Risk Management (MRM) provider, delivering specialized services to an ever-broadening portfolio of shipping, oil & gas, energy and construction industries.

Logically.ai

Logically.ai

Logically combines artificial intelligence with expert analysts to tackle harmful and manipulative content at speed and scale.

The Purple Guys

The Purple Guys

The Purple Guys offer Trouble-Free IT Support to businesses across the Central and Southern US. Safe and Secure, Rapid Response, Friendly Support that’s our Purple Promise.

Antivirus Tales

Antivirus Tales

Antivirus Tales offers a platform to resolve all types of antivirus-related issues. The platform also provide various blog articles and informative guides to fix antivirus software errors.

Zeta Sky

Zeta Sky

Zeta Sky offers a full range of IT and cyber-security services for your business.