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公开(公告)号：US10417270B2
公开(公告)日：2019-09-17
申请号：US15715583
申请日：2017-09-26
Applicant: Avast Software B.V.
Inventor： Shaul Levi , Valery Kholodkov , Yuval Ben-Itzhak
Abstract: In a system for extracting policy information from text, a processor analyzes if the text is relevant to a top-level category, and then determines if at least a portion of the text is relevant to categories and subcategories within a taxonomy of categories and subcategories related to the top-level category. If at least a portion of the text is determined to be relevant to the category/subcategory, a classifier extracts policy information associated with the category/subcategory. Using text that includes a known policy the classifiers can be trained to correctly recognize categories/subcategories, and the values associated therewith.
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公开(公告)号：US10255436B2
公开(公告)日：2019-04-09
申请号：US15275179
申请日：2016-09-23
Applicant: Avast Software s.r.o.
Inventor： Peter Ková{hacek over (c)}
IPC: G06F21/56
Abstract: Systems and methods automatically determine rules for detecting malware. A fingerprint representing a file is received. A set of nearest neighbor fingerprints from at least a set of malware fingerprints that are nearest neighbors are determined. The set of malware fingerprints are analyzed to determine a representative fingerprint. A malicious file detection rule is generated based, at least in part, on the representative fingerprint.
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公开(公告)号：US10095630B2
公开(公告)日：2018-10-09
申请号：US15394043
申请日：2016-12-29
Applicant: Avast Software s.r.o.
Inventor： Jakub Jermá{hacek over (r)}
IPC: G06F12/10 , G06F12/1009
Abstract: Systems and methods enable initializing and accessing page metadata stored in the last level of a multi-level page table, wherein an effort is made to reduce the number of metadata initializations and the number of page table walks for sequential accesses in comparison with a naïve method realized by a sequence of random accesses.
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公开(公告)号：US20250106225A1
公开(公告)日：2025-03-27
申请号：US18472620
申请日：2023-09-22
Applicant: Avast Software s.r.o.
Inventor： Bretislav Šopík
IPC: H04L9/40
Abstract: An electronic threat mitigation method is provided. A first rule for identifying application code is obtained, and a rule update for identifying application code is generated. An abstract syntax tree of the first rule is generated, the abstract syntax tree including a plurality of nodes. The rule update is incorporated into a first node of the plurality of nodes to generate a second rule for identifying application code, the first node at a first depth on the abstract syntax tree. The second rule is applied to a plurality of application code samples to determine a coverage of the second rule, and the first rule is updated as the second rule based on the coverage of the second rule and the first depth. A notification is provided or a data file is disabled, blocked, or deleted based on application of the second rule.
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公开(公告)号：US20250030654A1
公开(公告)日：2025-01-23
申请号：US18355396
申请日：2023-07-19
Applicant: Avast Software s.r.o.
Inventor： Iskander Sanchez Rola
IPC: H04L51/063 , G06F40/166 , G06F40/279
Abstract: An electronic tracking protection system and method enable receiving a particular electronic message, detecting in the particular electronic message a link including a particular uniform resource locator (“URL”) including a parameter including a value. A uniqueness of the value is determined and the parameter is removed from the particular URL based on the uniqueness of the value to generate a modified URL. The particular URL is replaced with the modified URL in the particular electronic message based on the uniqueness of the value to generate a modified electronic message.
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Patent Agency Ranking
公开(公告)号：US12174994B2
公开(公告)日：2024-12-24
申请号：US17654166
申请日：2022-03-09
Applicant: Avast Software s.r.o.
Inventor： Martin Mesrsmid
IPC: G06Q30/02 , G06F21/62 , G06Q30/0203
Abstract: A method of collecting user device data includes receiving a probabilistic cardinality estimator data structure in the user device from a server, the probabilistic cardinality estimator data structure associated with a survey question. An answer to the survey question associated with the probabilistic cardinality estimator data structure is determined, and one or more elements are selectively added to the probabilistic cardinality estimator data structure based on the determined answer to the survey question. The probabilistic cardinality estimator data structure is sent back to the server, which calculates the survey result from the probabilistic cardinality estimator data structure.
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公开(公告)号：US20240154815A1
公开(公告)日：2024-05-09
申请号：US18052752
申请日：2022-11-04
Applicant: Avast Software s.r.o.
Inventor： Allan Thomson , Drummond Reed , Jamie Smith
IPC: H04L9/32
CPC classification number: H04L9/3247
Abstract: Systems and methods for transacting over a network. A first agent operating on a first computing system is operable to transact on behalf of a first entity. The first agent transacts with a second agent operating on a second computing system for a first cryptographically verifiable credential, transmits the first cryptographically verifiable credential to a third agent, and transacts with the third agent based on the first cryptographically verifiable credential for a second cryptographically verifiable credential to facilitate transacting with a fourth agent for a service. The second agent is operable to receive telemetry data of the first computing system which is configured to monitor the telemetry data, determine an assessment of the first entity based on the telemetry data, generate the first cryptographically verifiable credential based on the assessment of the first entity by the second agent, and transmit the first cryptographically verifiable credential to the first agent.
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公开(公告)号：US11968202B2
公开(公告)日：2024-04-23
申请号：US16422591
申请日：2019-05-24
Applicant: Avast Software s.r.o.
Inventor： Karel Fuka , Vojt{hacek over (e)}ch Tůma
CPC classification number: H04L63/083
Abstract: A method of authenticating a user to a computer in an adverse environment includes receiving the user's password in a trusted user device, such as by the user typing the password, and encoding a keyword with a hash of the entered password to create an encoded keyword. The encoded keyword is sent from the trusted user device to the computer using a physical communication channel perceivable by the user; and the encoded keyword is compared in the computer with a keyword encoded with a known hash of the user's password in the computer to authenticate the user.
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公开(公告)号：US11968175B2
公开(公告)日：2024-04-23
申请号：US17568370
申请日：2022-01-04
Applicant: Avast Software s.r.o.
Inventor： Hai Tung Nguyen , Christopher Joseph O'Connell , Barna Csukas , Thomas Salomon
CPC classification number: H04L63/0236 , H04L47/781 , H04L63/20 , H04L67/02
Abstract: A method of filtering a URL against a blacklist includes receiving at least a portion of a Uniform Resource Locator (URL), and determining which of a plurality of XOR filters is applicable to the received at least a portion of a URL, where each of the plurality of XOR filters represents a different portion of a URL blacklist. At least a portion of a URL is forwarded to the applicable one of the plurality of XOR filters, and the at least a portion of the URL is processed in the applicable one of the plurality of XOR filters to produce an output indicating whether the URL is likely on the blacklist.
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公开(公告)号：US11765413B2
公开(公告)日：2023-09-19
申请号：US17940066
申请日：2022-09-08
Applicant: Avast Software s.r.o.
IPC: H04N21/24 , H04N21/258 , H04L65/612
CPC classification number: H04N21/2407 , H04L65/612 , H04N21/2408 , H04N21/25841
Abstract: A method of providing a content feed. The method includes monitoring a plurality of user content streams of a plurality of users on a plurality of computing devices, the plurality of user content streams including a plurality of content instances accessible via a network. A plurality of archetypes are generated based on the plurality of user content streams. A selection of a particular archetype of the plurality of archetypes from a particular user is received on a particular computing device. A particular content stream is determined based on the particular archetype, and the particular content stream is delivered to the particular user via the particular computing device.
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