Device Data can be too Much of a Good Thing for LE Investigations

Umit Karabiyik, an assistant professor in computer and information technology, works in Purdue’s Cybersecurity and Forensics Lab. Karabiyik researches forensic intelligence and how investigators can use terabytes of evidence from a myriad of devices. (Courtesy of Purdue University by Rebecca McElhoe)
Umit Karabiyik, an assistant professor in computer and information technology, works in Purdue’s Cybersecurity and Forensics Lab. Karabiyik researches forensic intelligence and how investigators can use terabytes of evidence from a myriad of devices. (Courtesy of Purdue University by Rebecca McElhoe)

Take a walk outside and, Purdue University’s Umit Karabiyik says, video-enabled doorbells or street cameras are recording you.

He says most people are carrying at least three devices that are each filing away different data about them.

For law enforcement investigations, all of this data is considered today’s digital “fingerprints” – information possibly needed to solve a crime.

Karabiyik, an assistant professor in computer and information technology in the Purdue Polytechnic Institute, is focused on that data – called forensic intelligence – to give law enforcement at all levels of the investigation the means to receive and handle potentially terabytes of such data.

“Think about the data on every device,” Karabiyik said.

Umit Karabiyik, Assistant Professor at Purdue University
Umit Karabiyik, Assistant Professor at Purdue University

“Individuals leave ‘fingerprints’ digitally on their phones with their behaviors.”

“Sometimes they are unique, and the data created by individuals on different devices help identify who the person is that was using the device.”

In a society devoted to myriad devices, most people are carrying on any given day a laptop, smartphone and, Karabiyik said, wearing a fitness tracker or smartwatch.

All three devices collect data ranging from photos and video, social media, and even geo-location that can potentially help an investigation.

Karabiyik is working on the data collected in cases of mass incidents with multiple victims, including terrorist attacks domestic or international.

The amount of data potentially available has grown exponentially in the years since September 11th, 2001, when investigators were faced with only 80 terabytes of data.

“Today, it could be 500 terabytes in an incident with thousands of people using smartphones, security cameras in the areas,” Karabiyik said.

“It’s like trying to find a needle in a needle stack rather than a haystack.”

The wide adoption of electronic devices has led to a tremendous usage growth resulting in terabytes of evidence data
The widespread adoption of electronic devices has led to tremendous growth of potential evidence data resulting in terabytes.

“Which needles are you interested in?

Which one specific item is the piece of data you need?”

Focusing on the available data from a device and identifying tendencies of whoever the device user was at the time offers insight into what has been happening.

Bringing together the evidence collected from multiple devices or shared devices allows investigators to make conclusions about who the user was at a given time.

Karabiyik is a member of Purdue’s Center for Education and Research in Information Assurance and Security (CERIAS). Purdue’s cybersecurity research and educational initiatives are centered under CERIAS and its 135 affiliated faculty members from 18 academic departments.

Cybersecurity is a critical topic under Purdue’s Next Moves, the ongoing strategic initiatives that will advance the university’s competitive advantage, and cybersecurity research is a key component of Purdue’s National Security and Technology enterprise.

Karabiyik is part of a team that has been working since 2016 on a faster way for anyone who wants to share data with law enforcement while still preserving their security and privacy.

Applied to any forensic investigation – large or small – a victim or witness simply needs to download an app to pass along potential information to law enforcement.

As part of the research, Karabiyik said nothing is shared with law enforcement unless specific consent is given on specific data from the person via the app.

Current investigation tools allow for only a transfer of all information, such as dumping all the photos from a phone rather than a select two or three.

“I believe there has to be a balance between national security and personal privacy,” Karabiyik said.

“This helps establish a trust between the public and the law enforcement agency so the public can share their data in a secured-manner situation.”

(Learn More. The goal of this project is to develop a prototype software system that can do targeted data extraction from mobile devices (iOS or Android based), that have been voluntarily handed over to the law enforcement agencies by a bystander or a victim subsequent to an incident. The ultimate goal of the system is to preserve the privacy of data and user during the investigation. Courtesy of Umit Karabiyik and YouTube. Posted on Jul 19, 2019.)

Purdue University is a top public research institution developing practical solutions to today’s toughest challenges and has been ranked for the last four years as one of the 10 Most Innovative universities in the United States by U.S. News & World Report.

Committed to affordability and accessibility, Purdue has frozen tuition and most fees at 2012-13 levels, enabling more students than ever to graduate debt-free.

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Published by permission. Originally posted here.

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Lumina Analytics provides intelligent solutions to help clients manage and mitigate risk. Serving large, regulated industries, law firms and governments globally with risk management intelligence, Lumina mines data from the open-source web to develop risk intelligence for large, regulated industries, and provides clients with unprecedented continuous, actionable prevention and mitigation opportunities.
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Register Today for Early Registration Discount to 2021 ‘ASTORS’ Awards Luncheon at ISC East

In addition to your gourmet, plated meal, entree of choice, and signed copy of Bill Bratton’s New Book ‘The Profession’ - your 2021 ‘ASTORS’ Awards Luncheon Registration includes Complimentary attendee access to ISC East, the leading event for the Northeast’s security and public safety community, the inaugural Natural Disaster and Emergency Management (NDEM) Expo, and the ASIS NYC SECURITY CONFERENCE & EXPO on November 17th & 18th at the Jacob Javitz Center in New York City.
In addition to your gourmet, plated meal, and your entree of choice, the first 100 registered attendees will receive a signed copy of Bill Bratton’s New Book ‘The Profession’. 2021 ‘ASTORS’ Awards Luncheon Registration also includes Complimentary attendee access to ISC East, the leading event for the Northeast’s security and public safety community, the inaugural Natural Disaster and Emergency Management (NDEM) Expo, and the ASIS NYC SECURITY CONFERENCE & EXPO on November 17th & 18th at the Jacob Javitz Center in New York City.

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Transportation Security Administration (TSA) Administer, David Pekoske
David Pekoske, Transportation Security Administration (TSA) Administer

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At ISC East 2021 you with the opportunity to interact with a broad array of security industry professionals.

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With the integration of the Natural Disaster and Emergency Management (NDEM) Expo, the show is moving even further into our reader’s wheelhouse!

With the integration of the Natural Disaster and Emergency Management (NDEM) Expo, the show is moving even further into our reader's wheelhouse! Your ‘ASTORS’ Awards Luncheon registration includes complimentary attendee access to both ISC East - and NDEM!
ISC East the leading event for the Northeast’s security and public safety community, and home of the Annual ‘ASTORS’ Homeland Security Awards Luncheon, is colocating with the inaugural Natural Disaster and Emergency Management (NDEM) Expo on November 17th & 18th at the Jacob Javitz Center in New York City.

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The traditional security marketplace has long been covered by a host of publications putting forward the old school basics to what is Today – a fast changing security landscape.

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AST puts forward the Largest and Most Qualified Circulation in Government with Over 75,000 readers on the Federal, State and Local levels.
AST puts forward the Largest and Most Qualified Circulation in Government with Over 75,000 readers on the Federal, State and Local levels.

The AST Digital Publications is distributed to over 75,000 qualified government and homeland security professionals in federal, state and local levels.

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Lumina Analytics Nominated to Compete in 2021 ‘ASTORS’ Awards