Patents by Inventor Srikanth Devarajan

Srikanth Devarajan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210344511
    Abstract: Systems and methods include, in a node operating as a snooping proxy, monitoring traffic between a user device and the Internet; detecting and monitoring a handshake between the user device and an endpoint for determining keys associated with encryption between the user device and the endpoint; monitoring encrypted traffic between the user device and the endpoint subsequent to the handshake based on the keys; and performing one or more security functions on the encrypted traffic based on the monitoring. The node can be part of a cloud-based security system and configured inline between the user device and the endpoint.
    Type: Application
    Filed: April 30, 2020
    Publication date: November 4, 2021
    Inventors: Srikanth Devarajan, Vijay Bulusu, Leslie McCutcheon
  • Patent number: 11159486
    Abstract: System and methods implemented in a node in a cloud-based security system include obtaining a plurality of rules each define via a rule syntax that includes a rule header and rule options, wherein each rule header is used to for a rule database lookup, and each rule options is used to specify details about the associated rule; monitoring data associated with a user of the cloud-based security system; analyzing the data with the plurality of rules; and performing one or more security functions on the data based on triggering of a rule of the plurality of rules.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: October 26, 2021
    Assignee: Zscaler, Inc.
    Inventors: Sushil Pangeni, Vladimir Stepanenko, Srikanth Devarajan, Shashi Kiran Meda Ravi
  • Patent number: 11153190
    Abstract: Techniques for using traceroute with tunnels and cloud-based systems for determining measures of network performance are presented. Systems and methods include receiving a request, from a client, for one or more of a first trace of a tunnel and a second trace to a destination; checking a cache at the node for results from previous traces of the first trace and the second trace; responsive to the results not being in the cache, performing one or more of the first trace and the second trace; and providing the results to the client so that the client aggregates the results with details from one or more additional legs to provide an overall view of a service path between the client and the destination.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: October 19, 2021
    Assignee: Zscaler, Inc.
    Inventors: Vikas Mahajan, Srikanth Devarajan, Chenglong Zheng, Pankaj Chhabra, Sandeep Kamath, Chakkaravarthy Periyasamy Balaiah, Vladimir Stepanenko, Sreedhar Pampati
  • Patent number: 11134106
    Abstract: Mobile device security, device management, and policy enforcement are described in a cloud-based system where the “cloud” is used to pervasively enforce security and policy and perform device management regardless of device type, platform, location, etc. A cloud-based method includes monitoring traffic between a mobile device and a network in a cloud-based system that is implemented as an overlay network relative to the mobile device and the network; analyzing the traffic from the mobile device to the network, for enforcing policy thereon, wherein the policy includes a set of use guidelines associated with the user of the mobile device; and blocking or allowing the traffic from the mobile device to the network based on the analyzing.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: September 28, 2021
    Assignee: Zscaler, Inc.
    Inventors: Amit Sinha, Narinder Paul, Srikanth Devarajan
  • Publication number: 20210119798
    Abstract: Systems and methods of Exact Data Matching (EDM) for identifying related tokens in data content using structured signature data implemented in a cloud-based system receiving data sets and customer configuration from a customer, wherein the data sets include customer specific sensitive data from a structured data source with each token represented by a hash value and the customer configuration includes one or more primary keys for a plurality of records in the data sets; distributing the data sets and the customer configuration to a plurality of nodes in the cloud-based system; performing monitoring of content between a client of the customer and an external network; detecting a presence of a plurality of tokens associated with a record in the customer specific sensitive data based on the monitoring; and performing a policy-based action in the cloud-based system based on the detecting.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 22, 2021
    Inventors: Balakrishna Bayar, Arun Bhallamudi, Srikanth Devarajan, Siva Udupa
  • Patent number: 10938686
    Abstract: Systems and methods for analyzing digital user experience include performing inline monitoring of network access between one or more users each with an associated user device executing an agent application, the Internet, and one or more cloud applications and private applications accessible via lightweight connectors; based on user experience metrics collected by the inline monitoring and stored in a logging analysis system, obtaining user experience metrics for one or more users for a given time epoch and for a given application; determining a user experience score for the one or more users for the given time epoch and for the given application based on the obtained user experience metrics; and providing a graphical user interface displaying data related to various user experience scores for various users over various time epochs with various applications.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: March 2, 2021
    Assignee: Zscaler, Inc.
    Inventors: Dhawal Sharma, KD Mazboudi, Srikanth Devarajan, Chakkaravarthy Periyasamy Balaiah, Sreedhar Pampati, Amit Sinha
  • Patent number: 10911233
    Abstract: Systems and methods of Exact Data Matching (EDM) for identifying related tokens in data content using structured signature data implemented in a cloud-based system receiving data sets and customer configuration from a customer, wherein the data sets include customer specific sensitive data from a structured data source with each token represented by a hash value and the customer configuration includes one or more primary keys for a plurality of records in the data sets; distributing the data sets and the customer configuration to a plurality of nodes in the cloud-based system; performing monitoring of content between a client of the customer and an external network; detecting a presence of a plurality of tokens associated with a record in the customer specific sensitive data based on the monitoring; and performing a policy-based action in the cloud-based system based on the detecting.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: February 2, 2021
    Assignee: Zscaler, Inc.
    Inventors: Balakrishna Bayar, Arun Bhallamudi, Srikanth Devarajan, Siva Udupa
  • Patent number: 10892964
    Abstract: Systems and methods for monitoring digital user experience include performing inline monitoring of network access between one or more users each with an associated user device executing an agent application, the Internet, and one or more cloud applications and private applications accessible via lightweight connectors; responsive to a user executing a specific application, obtaining device and application metrics for the user from the associated user device related to usage of specific application; obtaining network metrics from the cloud system related to network performance of the specific application; and providing the device and application metrics and the network metrics to a logging and analytics system for quantifying digital user experience of the specific application.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: January 12, 2021
    Assignee: Zscaler, Inc.
    Inventors: Dhawal Sharma, K D Mazboudi, Srikanth Devarajan, Chakkaravarthy Periyasamy Balaiah, Sreedhar Pampati, Amit Sinha
  • Publication number: 20200344272
    Abstract: Mobile device security, device management, and policy enforcement are described in a cloud-based system where the “cloud” is used to pervasively enforce security and policy and perform device management regardless of device type, platform, location, etc. A cloud-based method includes monitoring traffic between a mobile device and a network in a cloud-based system that is implemented as an overlay network relative to the mobile device and the network; analyzing the traffic from the mobile device to the network, for enforcing policy thereon, wherein the policy includes a set of use guidelines associated with the user of the mobile device; and blocking or allowing the traffic from the mobile device to the network based on the analyzing.
    Type: Application
    Filed: July 10, 2020
    Publication date: October 29, 2020
    Inventors: Amit Sinha, Narinder Paul, Srikanth Devarajan
  • Publication number: 20200274784
    Abstract: Systems and methods for analyzing digital user experience include performing inline monitoring of network access between one or more users each with an associated user device executing an agent application, the Internet, and one or more cloud applications and private applications accessible via lightweight connectors; based on user experience metrics collected by the inline monitoring and stored in a logging analysis system, obtaining user experience metrics for one or more users for a given time epoch and for a given application; determining a user experience score for the one or more users for the given time epoch and for the given application based on the obtained user experience metrics; and providing a graphical user interface displaying data related to various user experience scores for various users over various time epochs with various applications.
    Type: Application
    Filed: February 25, 2019
    Publication date: August 27, 2020
    Inventors: Dhawal Sharma, KD Mazboudi, Srikanth Devarajan, Chakkaravarthy Periyasamy Balaiah, Sreedhar Pampati, Amit Sinha
  • Publication number: 20200274783
    Abstract: Systems and methods for monitoring digital user experience include performing inline monitoring of network access between one or more users each with an associated user device executing an agent application, the Internet, and one or more cloud applications and private applications accessible via lightweight connectors; responsive to a user executing a specific application, obtaining device and application metrics for the user from the associated user device related to usage of specific application; obtaining network metrics from the cloud system related to network performance of the specific application; and providing the device and application metrics and the network metrics to a logging and analytics system for quantifying digital user experience of the specific application.
    Type: Application
    Filed: February 25, 2019
    Publication date: August 27, 2020
    Inventors: Dhawal Sharma, KD Mazboudi, Srikanth Devarajan, Chakkaravarthy Periyasamy Balaiah, Sreedhar Pampati, Amit Sinha
  • Patent number: 10749907
    Abstract: Mobile device security, device management, and policy enforcement are described in a cloud based system where the “cloud” is used to pervasively enforce security and policy and perform device management regardless of device type, platform, location, etc. A cloud based method includes monitoring traffic between a mobile device and an external network in a cloud based system separate from the mobile device and the external network; enforcing policy with respect to the traffic from the mobile device to the external network to determine whether to block or allow the traffic from the mobile device to the external network; and inspecting content associated with the traffic from the external network to the mobile device to determine whether to block or allow the traffic from the external network to the mobile device.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: August 18, 2020
    Assignee: Zscaler, Inc.
    Inventors: Amit Sinha, Narinder Paul, Srikanth Devarajan
  • Publication number: 20200259793
    Abstract: System and methods implemented in a node in a cloud-based security system include obtaining a plurality of rules each define via a rule syntax that includes a rule header and rule options, wherein each rule header is used to for a rule database lookup, and each rule options is used to specify details about the associated rule; monitoring data associated with a user of the cloud-based security system; analyzing the data with the plurality of rules; and performing one or more security functions on the data based on triggering of a rule of the plurality of rules.
    Type: Application
    Filed: April 27, 2020
    Publication date: August 13, 2020
    Inventors: Sushil Pangeni, Vladimir Stepanenko, Srikanth Devarajan, Shashi Kiran Meda Ravi
  • Publication number: 20200259792
    Abstract: Cloud-based Intrusion Prevention Systems (IPS) include receiving traffic associated with a user of a plurality of users, wherein each user is associated with a customer of a plurality of customers for a cloud-based security system, and wherein the traffic is between the user and the Internet; analyzing the traffic based on a set of signatures including stream-based signatures and security patterns; blocking the traffic responsive to a match of a signature of the set of signatures; and performing one or more of providing an alert based on the blocking and updating a log based on the blocking.
    Type: Application
    Filed: April 27, 2020
    Publication date: August 13, 2020
    Inventors: Srikanth Devarajan, Sushil Pangeni, Vladimir Stepanenko, Ravinder Verma, Naresh kumar Povlavaram Munirathnam
  • Patent number: 10728117
    Abstract: Systems and methods for improving digital user experience include performing inline monitoring of network access between one or more users each with an associated user device executing an agent application, the Internet, and one or more cloud applications and private applications accessible via lightweight connectors; obtaining user experience scores for any of a user, a group of users, a location, and an organization from the inline monitoring or from the logging and analytics system; responsive to a low user experience, analyzing the low user experience score to determine one or more likely factors; and causing one or more remedial actions to address the low user experience score based on the one or more likely factors.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: July 28, 2020
    Assignee: Zscaler, Inc.
    Inventors: Dhawal Sharma, KD Mazboudi, Srikanth Devarajan, Chakkaravarthy Periyasamy Balaiah, Sreedhar Pampati, Amit Sinha
  • Publication number: 20200177548
    Abstract: Multi-tenant cloud-based firewall systems and methods are described. The firewall systems and methods can operate overlaid with existing branch office firewalls or routers as well as eliminate the need for physical firewalls. The firewall systems and methods can protect users at user level control, regardless of location, device, etc., over all ports and protocols (not only ports 80/443) while providing administrators a single unified policy for Internet access and integrated reporting and visibility. The firewall systems and methods can eliminate dedicated hardware at user locations, providing a software-based cloud solution.
    Type: Application
    Filed: February 4, 2020
    Publication date: June 4, 2020
    Inventors: Srikanth Devarajan, Vladimir Stepanenko, Ravinder Verma, James Kawamoto
  • Patent number: 10594656
    Abstract: A multi-tenant cloud-based firewall method from a client, performed by a cloud node, includes receiving a packet from the client, wherein the client is located externally from the cloud node; checking if a firewall session exists for the packet, and if so, processing the packet on a fast path where a lookup is performed to find the firewall session; if no firewall session exists, creating the firewall session; and processing the packet according to the firewall session and one or more rules. The cloud node can perform the method without a corresponding appliance or hardware on premises, at a location associated with the client, for providing a firewall.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: March 17, 2020
    Assignee: Zscaler, Inc.
    Inventors: Srikanth Devarajan, Vladimir Stepanenko, Ravinder Verma, James Kawamoto
  • Publication number: 20200084241
    Abstract: Mobile device security, device management, and policy enforcement are described in a cloud based system where the “cloud” is used to pervasively enforce security and policy and perform device management regardless of device type, platform, location, etc. A cloud based method includes monitoring traffic between a mobile device and an external network in a cloud based system separate from the mobile device and the external network; enforcing policy with respect to the traffic from the mobile device to the external network to determine whether to block or allow the traffic from the mobile device to the external network; and inspecting content associated with the traffic from the external network to the mobile device to determine whether to block or allow the traffic from the external network to the mobile device.
    Type: Application
    Filed: November 12, 2019
    Publication date: March 12, 2020
    Inventors: Amit Sinha, Narinder Paul, Srikanth Devarajan
  • Patent number: 10523710
    Abstract: Mobile device security, device management, and policy enforcement are described in a cloud based system where the “cloud” is used to pervasively enforce security and policy and perform device management regardless of device type, platform, location, etc. A cloud based method for mobile device security, device management, and policy enforcement includes, responsive to configuring the mobile device for connectivity to the cloud system, monitoring data between the mobile device and the external network, wherein the cloud system connects to the mobile device independent of a type, platform, or operating system associated with the mobile device; analyzing the data in real-time in the cloud system thereby not impacting performance of the mobile device; and controlling exchange of the data, in the cloud system, between the mobile device and the external network based on the analyzing.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: December 31, 2019
    Assignee: Zscaler, Inc.
    Inventors: Amit Sinha, Narinder Paul, Srikanth Devarajan
  • Patent number: 10432651
    Abstract: Systems and methods of detecting Domain Name System (DNS) tunnels for monitoring thereof include obtaining data related to DNS traffic between DNS nameservers and clients; determining a score for each DNS nameserver based on the data to characterize DNS queries over a period of time for each DNS nameserver, wherein the score incorporates all DNS queries associated with the associated DNS nameserver over the period of time; determining one or more DNS nameservers likely operating DNS tunnels based on the score; and performing one or more actions on the one or more DNS nameservers related to the DNS tunnels.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: October 1, 2019
    Assignee: Zscaler, Inc.
    Inventors: Sushil Pangeni, Vladimir Stepanenko, Ravinder Verma, Srikanth Devarajan