Dr. Jacob Mendel

London, England, United Kingdom Contact Info
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An accomplished executive with over two decades of experience in Emerging Businesses…

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  • State Street LLC

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Publications

  • Improving Streaming Cryptocurrency Transaction Classification via Biased Sampling and Graph Feedback

    ACSAC: Annual Computer Security Applications Conference December 2021

    We show that knowledge of wallet addresses from the current time state of a blockchain network, such as Bitcoin, increases the performance of illicit activity detection. Based on this finding we introduce two new methods for the sampling of classifier training data so that precedence is given to transaction information from the recent past and the current time state. This sampling enables streaming classification in which a decision on the class of a transaction needs to be made based on data…

    We show that knowledge of wallet addresses from the current time state of a blockchain network, such as Bitcoin, increases the performance of illicit activity detection. Based on this finding we introduce two new methods for the sampling of classifier training data so that precedence is given to transaction information from the recent past and the current time state. This sampling enables streaming classification in which a decision on the class of a transaction needs to be made based on data seen to date. Our new approach provides insight into how the dynamics of the blockchain network plays a central role in the detection of illicit transactions, and is independent of the classifier choice. Our proposed sampling methods enable graph convolution network (GCN) and random forest (RF) classifiers to better adapt to changes in the network due to significant events, such as the closure of a large ‘Darknet’ marketplace. We introduce Graphlet spectral correlation analysis for exposing the effect of such network re-organisation due to major events. Finally, based on our analysis, we propose a new two-stage random forest classifier that feeds back intermediate predictions of neighbour to improve the classification decision. Our methodology enables practical streaming classification, even in the scenario of very limited information on the feature space of each transaction.

    Other authors
    •  Shaltiel Eloul
    See publication
  • Information Security: The Enemy From Within

    Innovations in Management, Issue 7, October 2020 (p22-29)

    Jacob Mendel, Moshe Zviran, Seen Neuman, "Information Security: The Enemy From Within", Innovations in Management, Issue 7, October 2020 (p22-29) https://coller.tau.ac.il/sites/coller.tau.ac.il/files/media_server/Recanati/management/newsletter/zviran.pdf

    Other authors
    • Moshe Zviran
    • Seen Neuman
    See publication
  • Blockchain as a Solution to Cyber Threats in the Smart Grid of the Future

    Coller Venture Review

    The Smart Grid is one of the most critical infrastructure services of today’s developed nations, providing electrical service to consumers through two-way digital communications. The system aims to improve supply efficiency and reliability while self-healing glitches and reducing energy consumption and costs. Governments have been working to implement these systems around the world as a step in combatting global warming and for their potential to build energy resilience and…

    The Smart Grid is one of the most critical infrastructure services of today’s developed nations, providing electrical service to consumers through two-way digital communications. The system aims to improve supply efficiency and reliability while self-healing glitches and reducing energy consumption and costs. Governments have been working to implement these systems around the world as a step in combatting global warming and for their potential to build energy resilience and independence.

    Alongside smart grids and the rise of IoT (Internet of Things) in general, smart meters are becoming widespread as well – in residential, business, and industrial buildings alike. The new smart metering is the gateway between the Smart Grid and our homes or businesses, enabling dynamic pricing and information exchange with smart home devices. In its most basic consumer application, smart meters precisely track all energy consumption and send digital meter readings to energy suppliers for more accurate energy bills.

    See publication
  • The 5th HLS & CYBER International Conference & Exhibition will be held between November 12-15, 2018, in Tel Aviv, Israel.

    Showcasing Israel’s unique security and cyber defense capabilities, this biennial event draws the attendance of hundreds of Israeli companies and thousands of security experts.

    See publication
  • A Global Challenge - An Israeli Response

    National Cyber Directorate

    The Israeli cyber-ecosystem, which stands at the forefront of technology, offers a range of cutting-edge cyber-security solutions for countries, companies and organizations in dealing with cyber threats and cyber-crime.

    See publication
  • Executive Cyber Forum - AI for Security

    TAU

    The Executive Cyber Forum was founded 6 years ago, and holds sessions quarterly. It brings together representatives from various fields: academia, multinational industry, military executives, governments and national cyber bureaus as well as startups and venture capital funds.
    These sessions allow in-depth discussions on important cyber issues, creating a great opportunity for new collaborations and strengthening existing partnerships. The topic of the following session is AI for Security​.

    See publication
  • Smart & Safe City - How to improve our cities while keeping our privacy

    Haifa

    The 6th China-Israel
    Hi-Tech Investment Summit
    Haifa 2017 - ISRAEL

    See publication
  • Blockchain - The New Digital Age

    TAU (Tel-Aviv University)

  • Cyber & Aviation

    TAU (Tel-Aviv University)

Patents

  • SYSTEM AND METHOD FOR FACT VERIFICATION USING BLOCKCHAIN AND MACHINE LEARNING TECHNOLOGIES

    Issued US 20230379180

    A method for performing fact verification includes receiving a document for verification; identifying and extracting, on the computer network, at least two named entities from the document for verification and associated information as metadata; identifying, off-chain, identifiers of relevant documents corresponding to each of the at least two named entities, the relevant documents being authenticated documents including one or more of the at least two named entities; identifying a…

    A method for performing fact verification includes receiving a document for verification; identifying and extracting, on the computer network, at least two named entities from the document for verification and associated information as metadata; identifying, off-chain, identifiers of relevant documents corresponding to each of the at least two named entities, the relevant documents being authenticated documents including one or more of the at least two named entities; identifying a predetermined number of relevant documents among the identified relevant documents based on a number of the at least two named entities present and a number of occurrences for each of the named entities; and determining whether the document to be verified is supported by the predetermined number of relevant documents.

  • SYSTEMS AND METHODS FOR MIXED PRECISION MACHINE LEARNING WITH FULLY HOMOMORPHIC ENCRYPTION

    Issued US 20230126672

    Systems and methods for mixed precision machine learning with fully homomorphic encryption are disclosed. A method may include receiving data in a mixed precision format from a program or an application executed by the client electronic device; converting the data from the mixed precision format to an integer format; encrypting the data in the integer format using a fully homomorphic data encryption scheme; communicating the encrypted data in the integer format to a host electronic device…

    Systems and methods for mixed precision machine learning with fully homomorphic encryption are disclosed. A method may include receiving data in a mixed precision format from a program or an application executed by the client electronic device; converting the data from the mixed precision format to an integer format; encrypting the data in the integer format using a fully homomorphic data encryption scheme; communicating the encrypted data in the integer format to a host electronic device, wherein the host electronic device is configured to process the encrypted data in the integer format and provide an encrypted result in the integer format to the client electronic device; decrypting the encrypted result in the integer format using the fully homomorphic data encryption scheme; converting the decrypted result in the integer format to the mixed precision format; and outputting the result in the mixed precision format to the program or the application.

  • SYSTEMS AND METHODS FOR COMBINING GRAPH EMBEDDING AND RANDOM FOREST CLASSIFICATION FOR IMPROVING CLASSIFICATION OF DISTRIBUTED LEDGER ACTIVITIES

    Issued US 20220398233

    Amethod for combining an embedding of a graph having a plurality of nodes and edge connections and classifications of distributed ledger-based activities may include: receiving information for historical distributed ledger-based activities comprsi nidonedna onet a plus lot atenieh unknown; applying sampling to sample labels and associ- ated features; training a first classifier based on the plurality of historical distributed ledger-based activities, hte node information, and the sample labels;…

    Amethod for combining an embedding of a graph having a plurality of nodes and edge connections and classifications of distributed ledger-based activities may include: receiving information for historical distributed ledger-based activities comprsi nidonedna onet a plus lot atenieh unknown; applying sampling to sample labels and associ- ated features; training a first classifier based on the plurality of historical distributed ledger-based activities, hte node information, and the sample labels; receiving a current distributed ledger-based activity from the distributed ledger network; predicting a classification for the current distrib- uted ledger-based activity using the first classifier; extracting features from hte current distributed ledger-based activity; enriching the extracted features based on one or more neighbors of the nodes involved in the current distributed ledger-based activity; reclassifying the current distributed ledger-based activity using a second classifier; and output- ting an alert based on the prediction.

  • SYSTEMS AND METHODS FOR STREAMING CLASSIFICATION OF DISTRIBUTED LEDGER-BASED ACTIVITIES

    Issued US 20220398264

    Systems and methods for streaming classification of distrib- uted ledger-based activities are disclosed. In one embodi- ment, a method for streaming classification of distributed
    ledger-based activities may include: receiving, at a detection
    computer program executed by a server and from a distrib- uted ledger network, information for a plurality of transac- tions; receiving, from a database and at the detection com- puter program, node information that identifies a plurality…

    Systems and methods for streaming classification of distrib- uted ledger-based activities are disclosed. In one embodi- ment, a method for streaming classification of distributed
    ledger-based activities may include: receiving, at a detection
    computer program executed by a server and from a distrib- uted ledger network, information for a plurality of transac- tions; receiving, from a database and at the detection com- puter program, node information that identifies a plurality of
    computer program, exponential time sampling to sample labels and associated features; training, by the detection computer program, a classifier; receiving, by the detection computer program, a streaming transaction from the distrib- uted ledger network; predicting, by the detection computer program, a classification for the streaming transaction using the trained classifier; and outputting, by the detection com- puter program, an alert based on the prediction.

  • SYSTEMS AND METHODS FOR MANAGEMENT OF FINANCIAL TRANSACTIONSASSOCIATED WITH A FUNDING AGREEMENT

    Issued US 11514513

    Amethod for management of financial transactions associ- ated with a funding agreement may include: receiving, at the award information management system and from an award-
    ing organization, details for a funding award comprising an identification of an award recipient, an award amount, and a
    condition on the use of the award; notifying an award drawdown management system of the award details; iden- tifying a plurality of participating financial institutions to the award recipient;…

    Amethod for management of financial transactions associ- ated with a funding agreement may include: receiving, at the award information management system and from an award-
    ing organization, details for a funding award comprising an identification of an award recipient, an award amount, and a
    condition on the use of the award; notifying an award drawdown management system of the award details; iden- tifying a plurality of participating financial institutions to the award recipient; receiving a registration of an account at one
    of the financial institutions for receiving drawdown funds; communicating an amount of the payment to the fund reporting and analysis system; receiving transaction details from the financial institution having the award recipient's registered account; and providing reports of all transactions in the registered account and any and all optional card accounts with detailed analysis of part transaction, current balances and predictions of future drawdown requests.

  • Systems and methods for graphical programming and deployment of distributed ledger applications

    Issued US 20220066746

    Systems and methods for Unified Modeling Language application development on distributed ledgers are disclosed. In one embodiment, a method for graphical programming and deployment of distributed ledger applications may include: (1) receiving, at a coding engine executed by a computer processor, a graphical program for a distributed ledger application comprising a process and a plurality of deployment parameters; (2) retrieving, by the coding engine and from a deployment data database…

    Systems and methods for Unified Modeling Language application development on distributed ledgers are disclosed. In one embodiment, a method for graphical programming and deployment of distributed ledger applications may include: (1) receiving, at a coding engine executed by a computer processor, a graphical program for a distributed ledger application comprising a process and a plurality of deployment parameters; (2) retrieving, by the coding engine and from a deployment data database, deployment data for the plurality of deployment parameters; (3) generating, by the coding engine, the distributed ledger application based on the graphical program and the deployment data; and (4) deploying, by the coding engine, the distributed ledger application to a deployment environment.

    Other inventors
  • SYSTEMS AND METHODS FOR MANAGEMENT OF FINANCIAL TRANSACTIONS ASSOCIATED WITH A FUNDING AGREEMENT

    Issued US 2021-0374844 A1

    A method for management of financial transactions associated with a funding agreement may include: receiving, at the award information management system and from an awarding organization, details for a funding award comprising an identification of an award recipient, an award amount, and a condition on the use of the award; notifying an award drawdown management system of the award details; identifying a plurality of participating financial institutions to the award recipient; receiving a…

    A method for management of financial transactions associated with a funding agreement may include: receiving, at the award information management system and from an awarding organization, details for a funding award comprising an identification of an award recipient, an award amount, and a condition on the use of the award; notifying an award drawdown management system of the award details; identifying a plurality of participating financial institutions to the award recipient; receiving a registration of an account at one of the financial institutions for receiving drawdown funds; communicating an amount of the payment to the fund reporting and analysis system; receiving transaction details from the financial institution having the award recipient's registered account; and providing reports of all transactions in the registered account and any and all optional card accounts with detailed analysis of part transaction, current balances and predictions of future drawdown requests.

  • Security Controlled Multi-Processor System

    Issued US US 9,256,734

    Embodiments of the present disclosure provide systems and methods for implementing a secure processing system having a first processor that is certified as a secure processor. The first processor only executes certified and/or secure code. An isolated second processor executes non-secure (e.g., non-certified) code within a sandbox. The boundaries of the sandbox are enforced (e.g., using a hardware boundary and/or encryption techniques) such that code executing within the sandbox cannot access…

    Embodiments of the present disclosure provide systems and methods for implementing a secure processing system having a first processor that is certified as a secure processor. The first processor only executes certified and/or secure code. An isolated second processor executes non-secure (e.g., non-certified) code within a sandbox. The boundaries of the sandbox are enforced (e.g., using a hardware boundary and/or encryption techniques) such that code executing within the sandbox cannot access secure elements of the secure processing system located outside the sandbox. The first processor manages the memory space and the applications that are permitted to run on the second processor.

    Other inventors
    • Mark L. Buer
  • Secure Active Networks

    Issued US 9258287

    A secure active network includes a plurality of secure elements which communicate with one another to share and log information such as identification, location, and user activity associated with each secure element. Secure elements exchange data with one another, and log data received. The periodicity of communication between secure elements, encryption of the information, and the operating frequency in which the information is transmitted and received may be changed if communication is lost…

    A secure active network includes a plurality of secure elements which communicate with one another to share and log information such as identification, location, and user activity associated with each secure element. Secure elements exchange data with one another, and log data received. The periodicity of communication between secure elements, encryption of the information, and the operating frequency in which the information is transmitted and received may be changed if communication is lost between any of the secure elements or if a determination is made that a secure element has traveled outside a predetermined zone. The integrity of the secure network may be verified at any time by comparing the logged information to a reference network.

    Other inventors
  • Secure Processing Sub-System That is Hardware Isolated From A Peripheral Processing Sub-System

    Issued US 9224013

    Other inventors
    • Theodore Trost
    • Mark Buer
  • Input/Output GateKeeping

    Issued US 9202070

    Disclosed are various embodiments providing a portable wireless communication device that includes a secure element configured to route a set of input/output (I/O) channels to host processing circuitry of a mobile communication device. The secure element includes an application executable by the secure element, the application being configured to obtain a policy via an I/O channel of the set of I/O channels. The application is further configured to prevent the host processing circuitry from…

    Disclosed are various embodiments providing a portable wireless communication device that includes a secure element configured to route a set of input/output (I/O) channels to host processing circuitry of a mobile communication device. The secure element includes an application executable by the secure element, the application being configured to obtain a policy via an I/O channel of the set of I/O channels. The application is further configured to prevent the host processing circuitry from accessing data corresponding to at least a portion of the set of I/O channels according to the policy.

    Other inventors
  • Secure Delivery of Processing Code

    Issued US US 9165163

    An apparatus may comprise a secure portion of a chip and an external memory device. The secure portion of the chip may be configured to receive an encryption key, and the memory device may be configured to receive an encrypted processing code. The secure portion of the chip may be configured to verify the encrypted processing code by decrypting the encrypted processing code using the encryption key. A non-secure portion of the chip may be configured to write the encrypted processing code on the…

    An apparatus may comprise a secure portion of a chip and an external memory device. The secure portion of the chip may be configured to receive an encryption key, and the memory device may be configured to receive an encrypted processing code. The secure portion of the chip may be configured to verify the encrypted processing code by decrypting the encrypted processing code using the encryption key. A non-secure portion of the chip may be configured to write the encrypted processing code on the memory device while the memory device is coupled to the chip. The encryption key may be associated with an identifier of the chip.

    Other inventors
    • Mark Buer
  • Method and System for Authentication of Device Using Hardware DNA

    Issued US US 9,069,946 B2

    Methods and systems for authentication of a device are disclosed. An exemplary method includes transmitting an energy towards the device including a material, monitoring a response of the device to the transmitted energy, generating a signature of the device based on the response of the device to the transmitted energy, comparing the device signature to an enrolled signature for the device, and indicating that authentication of the device is successful when the generated signature matches the…

    Methods and systems for authentication of a device are disclosed. An exemplary method includes transmitting an energy towards the device including a material, monitoring a response of the device to the transmitted energy, generating a signature of the device based on the response of the device to the transmitted energy, comparing the device signature to an enrolled signature for the device, and indicating that authentication of the device is successful when the generated signature matches the enrolled signature. An exemplary system includes a transmitter configured to transmit an energy towards the device, a receiver configured to monitor a response of the device, and a processor configured to generate a signature of the device based on the response of the device, compare the device signature to an enrolled signature for the device, and indicate that authentication of the device is successful when the generated signature matches the enrolled signature.

    Other inventors
  • System for monitoring an operation of a device

    Issued US US 9027124 B2

    A system monitors an application. The system includes a state table with state table nodes corresponding to application checkpoints. The state table nodes include an authorized time interval and application path. The system also includes a time counter that tracks an operation time between successive application checkpoints, and a program counter that tracks and stores an operation path for the application. A checkpoint module verifies an operation of the application at a checkpoint by…

    A system monitors an application. The system includes a state table with state table nodes corresponding to application checkpoints. The state table nodes include an authorized time interval and application path. The system also includes a time counter that tracks an operation time between successive application checkpoints, and a program counter that tracks and stores an operation path for the application. A checkpoint module verifies an operation of the application at a checkpoint by comparing the authorized time interval for the checkpoint state table node and the operation time tracked by the time counter, as well as the authorized application path for the checkpoint state table node and the operation path tracked by the program counter. A security action is performed when the tracked operation time is not within the authorized time interval, or when the tracked operation path does not match the authorized application path.

    Other inventors
    • Alexander Potievsky
  • Methods and Systems for Secured Authentication of Applications on a Network

    Issued US US20140325594

    A secured communication network can include a server including an authentication backend, the authentication backend configured to communicate With an authentication front end of a communication device. A server applet can be associated With the authentication backend. The server applet can authenticate an access right associated With the communication device and establish a security level for the communication With the communication device based on information received from the authentication…

    A secured communication network can include a server including an authentication backend, the authentication backend configured to communicate With an authentication front end of a communication device. A server applet can be associated With the authentication backend. The server applet can authenticate an access right associated With the communication device and establish a security level for the communication With the communication device based on information received from the authentication front end

    Other inventors
  • System Utilizing a Secure Element

    Issued US US 8549586 B2

    Other inventors
  • System and Method for Location-Based Authentication

    Issued EU 13004282.3 - 1505

    Other inventors
    • Shlomo Markel
  • Secure data transfer using random ordering and random block sizing

    Issued US EP2584732

    Encrypted information is conventionally broken into blocks which are transmitted sequentially. Because the order and the size of such blocks can be easily determined, an eavesdropper can gain valuable information regarding the content of the communication. More specifically, if known types of information exist within a block, the encryption key may be determined allowing the content of other encrypted blocks to be obtained. Embodiments of a system, method and computer program product described…

    Encrypted information is conventionally broken into blocks which are transmitted sequentially. Because the order and the size of such blocks can be easily determined, an eavesdropper can gain valuable information regarding the content of the communication. More specifically, if known types of information exist within a block, the encryption key may be determined allowing the content of other encrypted blocks to be obtained. Embodiments of a system, method and computer program product described herein can overcome this deficiency by securely transferring information through random ordering and random block sizing. An original data set to be transferred is divided into a plurality of blocks, where at least two blocks have different sizes. Each of the blocks is encrypted. The encrypted blocks are inserted in a sequence of data transfer slots. The blocks are then selected for transfer in random order by selecting a slot to transfer based on a generated random number. Additional security is achieved by utilizing multiple channels for the transfer and transferring to multiple destinations.

  • Integrity Checking System

    Issued US US20130061328

    Other inventors
    • Eyal Webber-Zvik
    • Alexander Potievsky
  • Secure Electronic Element Network

    Issued US US20130060934

    Other inventors
    • Alexander Potievsky
  • Secure Data Transfer Using Random Ordering and Random Block Sizing

    Issued US US20130094650

    Encrypted information is conventionally broken into blocks which are transmitted sequentially. Because the order and the size of such blocks can be easily determined, an eavesdropper can gain valuable information regarding the content of the communication. More specifically, if known types of information exist within a block, the encryption key may be determined allowing the content of other encrypted blocks to be obtained. Embodiments of a system, method and computer program product described…

    Encrypted information is conventionally broken into blocks which are transmitted sequentially. Because the order and the size of such blocks can be easily determined, an eavesdropper can gain valuable information regarding the content of the communication. More specifically, if known types of information exist within a block, the encryption key may be determined allowing the content of other encrypted blocks to be obtained. Embodiments of a system, method and computer program product described herein can overcome this deficiency by securely transferring information through random ordering and random block sizing. An original data set to be transferred is divided into a plurality of blocks, where at least two blocks have different sizes. The blocks are encrypted and inserted into a sequence of data transfer slots. The blocks are then selected for transfer in random order by selecting a slot to transfer based on a generated random number

  • System For Securely Performing A Transaction

    Issued US US 20130061290 A1

    Other inventors
    • Alexander Potievsky
  • System Utilizing a Secure Element

    Issued US US20130145429 A1

    An electronic device includes a receiver configured to receive, from an entity, a request to perform a function. The electronic device also includes a secure element to verify the request to perform the function. The secure element includes hardware programmed with instructions to verify that a security of the secure element has not been breached. The secure element also includes software including instructions to determine an access right for the entity requesting performance of the function…

    An electronic device includes a receiver configured to receive, from an entity, a request to perform a function. The electronic device also includes a secure element to verify the request to perform the function. The secure element includes hardware programmed with instructions to verify that a security of the secure element has not been breached. The secure element also includes software including instructions to determine an access right for the entity requesting performance of the function, and to perform the function when the hardware verifies that the security of the secure element has not been breached and the access right indicates that the entity is authorized to request performance of the secure function.

    Other inventors
    See patent

Projects

  • Blockchain Fundamentals

    - Present

    How it Works ? Key Players, Use Cases and Investment Trends

    See project
  • Blockchain The New Digital Age - CyberWeek 2019

    - Present

    The Blockchain Conference is one of highlights of Cyber Week, bringing together industry experts, academic leaders, entrepreneurs and visionaries in the field.

    https://cyberweek.tau.ac.il/2019/Events/Blockchain%3A-The-New-Digital-Age

    Blockchain solutions are playing an increasingly central role in transforming business operations across every vertical. Join us for an expert event focusing on a deep-dive look into ‘use-cases’, adaptation and regulation in the public and private…

    The Blockchain Conference is one of highlights of Cyber Week, bringing together industry experts, academic leaders, entrepreneurs and visionaries in the field.

    https://cyberweek.tau.ac.il/2019/Events/Blockchain%3A-The-New-Digital-Age

    Blockchain solutions are playing an increasingly central role in transforming business operations across every vertical. Join us for an expert event focusing on a deep-dive look into ‘use-cases’, adaptation and regulation in the public and private sphere. Learn more from companies deploying and shaking-up the blockchain world and meet the innovators who are using cutting-edge ideas to take blockchain technology to new heights.

    Featuring industry experts, world-class academics and cutting-edge regulators, this is an event that you will not want to miss.

    See project
  • Blockchain Israel Womenevent

    http://bit.ly/blockchainisrael-womenevent

    See project
  • Blockchain Collaboration between Frankfurt Blockchain Hub and The Hogeg Blockchain Research Institute set to begin

    -

    The Frankfurt Blockchain Hub and The Hogeg Blockchain Research Institute from the Tel Aviv University have signed a cooperation agreement to further support Academic research within the blockchain and cryptocurrency space.

    See project

Languages

  • English

    Professional working proficiency

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